■ '42 



case in C. Mariensi, Miers ; C. Krukenbergi, Neumann ; 

 C. madagassa, Lenz and Richters ; and C. novac-brttanniae^ 

 Borradaile. In C. occidcnfalis, Bate, the trunk of the sixth 

 joint is much broader than the fifth joint. In C. Sfimpsoni^ 

 Smith, the fourth joint has a very prominent tooth near the 

 base. C. iruncata, Giard and Bonnier, founded on specimens 

 attacked by parasites, is said to be approximate to C.laticanda, 

 Otto. The large cheliped has a strong tooth on the fourth 

 joint. 



Gen. : Upogebia, Leach. 



1813-14. upogebia, Leach, Edinburgh Encyclopaedia, Art 

 Crustaceology, v. 7, p. 400. 



1 815. Geb/a, Leach, Trans. Linn. Soc. London, v. n 



PP- 335» 342. 



18 16. Thalassina, Risso, Hist. Nat. Crust., de Nice, p. 76 



1825. Gebia, Desmarest, Consid. gen. Crust., p. 203. 



1826. Gebios, Risso, Hist. Nat. de 1' Europe Merid., v. 5 



P- 51- 

 1837. Gcbia, Milne-Edwards, Hist. Nat. Crust., v. 2, p. 312 

 1841. Gebia, de Haan, Fauna Japonica, Crust., p. 162. 



1852. Gcbia, Dana, U.S. Expl. Exp., Crust., v. 13, p. 509. 



1853. Gebia, Bell, Brit. Stalk-eyed Crust., p. 222. 

 1863. Gebia, Heller, Crust, siid. Europa, p. 204. 



1 880. Gebia, Boas, Studier over Decapodernes Slaegts- 



kabsforhold, p. 82. 

 1882. Gebia, Haswell, Catal. Australian Crustacea, p. 164. 

 1884. Gebia, Sars, Archiv. Naturv., v. 9, pt. 2, p. 198. 

 1893. Upogebia, Stebbing, History of Crustacea, p. 185. 



1 693. Gebia, Ortmann, Decap. u. Schizop. Plankton-Exp., 



p. 49- 

 1900. Upogebia, M. J, Rathbun, Pr. U.S. Nat. Mus., v. 22, 



p. 308. 



The definition of this genus is not at present very clear. 

 According to a character usually given the anterior limbs of 

 the trunk do not form a proper chela, there being great 

 disparity of size between the movable finger and the tooth 

 which does duty for a thumb. In 1868 Professor A. Milne- 

 Edwards (Nouv. Archiv. Mus. Hist. Nat., v. 4, p. 64), founded 

 the genus Gebiopsis to receive a species in which the anterior 

 limbs are perfectly chelate, but both Miers in 1884 (Crustacea 

 of "Alert," p. 282) and Ortmann in 1893 are disposed to give 

 Gebiopsis only the rank of a sub-genus. Ortmann remarks 

 that the comparative length of the fingers in the different 

 species of Upogebia shows all possible gradations from 

 fingers of equal length to a very abbreviated condition of the 



