Halocynthia johnsoni n. sp. ; a comprehensive inquiry as to the extent of law and order that prevails in a single animal species.

On Giardia microti sp. nov., from the meadow mouse /
by: Kofoid, Charles A. (Charles Atwood), 1865-1947
Published: (1915)

An outline of the morphology and life history of Crithidia leptocoridis, sp. nov.
by: McCulloch, Irene Agnes, 1886-
Published: (1915)

On Balantidium coli (Malmsten) and Balantidium suis (sp. nov.) : with an account of their neuromotor apparatus.
by: McDonald, J. Daley (James Daley), 1892-
Published: (1922)

On the weight of developing eggs /
by: Ritter, William Emerson, 1856-1944
Published: (1908)

Ascidians of the littoral zone of southern California /
by: Ritter, William Emerson, 1856-1944
Published: (1917)

The organismal conception ; its place in science and its bearing on philosophy /
by: Ritter, William Emerson, 1856-1944
Published: (1928)

List of the described species of the order Stylasterina /
by: Boschma, Hilbrandt, 1893-
Published: (1957)

Notes on the Tintinnoina. : 1. On the probable origin Dictyocysta tiara Haeckel. 2. On Petalotricha entzi sp. nov.
by: Kofoid, Charles A. (Charles Atwood), 1865-1947
Published: (1915)

A review of the genera and species of the Bomolochidae (Crustacea, Copepoda) : including the description of some old and new species /
by: Vervoort, W. (Willem)
Published: (1962)

Keys to the species of Oratosquilla (Crustacea: Stomatopoda) : with descriptions of two new species /
by: Manning, Raymond B. (Raymond Brendan), 1934-2000

Keys to the species of Oratosquilla (Crustacea: Stomatopoda) : with descriptions of two new species /
by: Manning, Raymond B. (Raymond Brendan), 1934-2000
Published: (1971)

A review of the parasitic mite family Psorergatidae (Cheyletoidea: Prostigmata: Acari) : with hypotheses on the phylogenetic relationships of species and species groups /
by: Giesen, K. M. T.
Published: (1990)

A new species of ant-thrush from Peru.
by: Blake, Emmet Reid, 1908-1997
Published: (1957)

A new species of babbling thrush from the Philippines.
by: Rand, Austin Loomer, 1905-1982
Published: (1960)

Systematics, distribution, and evolution of the Nocomis biguttatus species group (family Cyprinidae: Pisces) with a description of a new species from the Ozark upland /
by: Lachner, Ernest A.
Published: (1971)

A review of old world species of Thyreus Panzer (= Crocisa Jurine) ; (Hym., Apoidea, Anthophoridae). Part 4. Palearctic species /
by: Lieftinck, Maurits A.
Published: (1968)

Four new species of the fish genus Ecsenius with notes on other species of the genus (Blenniidae, Salariini) /
by: McKinney, James F.
Published: (1976)

A new genus and species of frog (Leptodactylidae) from Colombia /
by: Cochran, Doris M. (Doris Mable), 1898-1968
Published: (1961)

A revision of the Nearctic species of the genus Psammotettix (Homoptera: Cicadellidae) /
by: Greene, James F.
Published: (1971)

A new species of Allactage (Rodentia: Dipodidae) from Iran /
by: Womochel, Daniel R.
Published: (1978)

A new species of toad (Bufo) from Sierra Leone /
by: Inger, Robert F.
Published: (1961)

Biserovus xiae sp. n. and Doryphoribius qinlingense sp. n., new species of eutardigrades from China /
by: Li, Xiaochen
Published: (2004)

The morphology, karyology and taxonomy of a new freshwater planarian of the genus Phagocata from California (Platyhelminthes: Turbellaria) / Ian R. Ball, N. Gourbault.
by: Ball, Ian R.
Published: (1975)

Species of the scincid genus Dasia Gray /
by: Inger, Robert F.
Published: (1980)

Osteological relationships of three species of beavers.
by: Holden, Frank Harvey, 1889-
Published: (1917)

Intraspecific and interspecific variation in the Cryptotis nigrescens species complex of small-eared shrews (Insectivora, Soricidae) : with the description of a new species from Colombia /
by: Woodman, Neal
Published: (1993)

Revision of the Indo-Australian species of the genus Phaeochrous castelnau, 1840 (Coleoptera: Scarabaeidae, Hybosorinae), with notes on the African species /
by: Kuijten, P. J.
Published: (1978)

Revision of the blenniid fish genus Omobranchus : with descriptions of three new species and notes on other species of the tribe Omobranchini /
by: Springer, Victor Gruschka, 1928-
Published: (1975)

Species limits in the indigobirds (Ploceidae, Vidua) of West Africa : mouth mimicry, song mimicry, and description of new species /
by: Payne, Robert B.
Published: (1982)

A new species of freshwater limpet, genus Gundlachia, from Japan /
by: Burch, J. B. (John Bayard), 1929-
Published: (1964)

A revision of North American epigean species of Asellus (Crustacea: Isopoda) /
by: Williams, W. D. (William David)
Published: (1970)

On the zoogeography of Southern African Decapod Crustacea, with a distributional checklist of the species /
by: Kensley, Brian Frederick
Published: (1981)

A revision of the European species of the Gammarus locusta-group (Crustacea, Amphipoda) /
by: Stock, Jan H.
Published: (1967)

Three species of Cerianthus from Southern California.
by: Torrey, Harry Beal, 1873-1970
Published: (1909)

Populations of the polytypic species Nocomis leptocephalus (Girard) with a description of a new subspecies /
by: Lachner, Ernest A.
Published: (1971)

Tuberculosis in animals ; proceedings of a symposium held at the Zoological Society of London, Regent's Park, London, N.W.1, on 24th May 1960 /
by: Ritchie, J. N.
Published: (1961)