35 
1874. Geryon, Sars, Vid.-Selsk. Forhandl. Christiania for 
1873, P- 393. | ; 
1879. Geryon, S. I. Smith, Trans. Connect. Acad., Vol. V., 
BE: 0D. 35: 
1881. Geryon, A. Milne-Edwards, C. R. Acad. Sci., Vol. XCIITI., 
p. 879. 
1886. Geryon, Miers, Challenger Brachyura, Reports, Vol. 
VIEL. pees: 
1890. Geryon, de Man, Notes from the Leyden Museum, 
Vol XT. p:-60; 
1894. Geryon, Ortmann, Zool. Jahrb., Vol. VII., p. 685. 
1894. Geryon, A. M.-Edwards and Bouvier, Crust. Decap. de 
)Hirondelle, fasc. 7, p. 41. 
1896. Geryon, Caullery, Résult. camp. du Caudan, fasc. 2, 
Pp. 404. 
1899. Geryon, Ortmann, in Bronn’s Thierreich, Vol. V., Pt. 2, 
Pe E76: 
1899. Geryon, Alcock, Deep-Sea Brachyura of the Investigator, 
p. 84. 
1900. Geryon, M. J. Rathbun, American Naturalist, Vol. 
XXXIV., p. 586. 
1900. Geryon, A. M.-Edwards and Bouvier, Crust. Decap. 
Travailleur et Talisman, p. 103. 
A. Milne-Edwards and Bouvier place this genus among the 
Cyclometopa in the family of Galenidae. Alcock follows them 
with the slight difference that he places it in the sub-family 
Galeninae, family Xanthidae. Miers, in his “Challenger ” 
report, assigns it to the Catometopa, fam. Ocypodidae, sub- 
fam. Carcinoplacinae, remarking that it is “very nearly 
allied both to Pseudorhombila and Pilumnoplax, and to the 
Cancroid genus Galene ; it is distinguished from them by the 
considerable development of the lateral marginal spines of 
the carapace, and from Pseudorhombila, as figured by Milne- 
Edwards, by the more slender basal antennal joint, which 
does not reach the front.” Miss Rathbun, Caullery, and 
Ortmann agree with Miers in arranging the genus among the 
Catometopa, the first placing it in the fam. Ocypodidae. the 
other two authors in the fam. Carcinoplacidae, Ortmann 
further specifying for it the sub-fam. Carcinoplacinae.. The 
species G. tridens, Kroyer, and G. longipes, A. Milne-Edwards, 
are evidently very nearly allied, and similarly between G. 
gquingquedens, Smith, and G. affinis, Milne-Edwards and Bouvier, 
the relationship is exceedingly close. On the other hand, G. 
incertus, Miers, is only donbtfully included in the genus. 
