200 Bulletin Vanderbilt Marine Museum, Vol. V 



Material examined: Five males and three females, collected in 

 Noumea, New Caledonia, September 19, 1931, by the '^Alva." This 

 apparently establishes the first record of this species from New Cale- 

 donia. 



Color : The color of the living species is not recorded. 



Technical description: This species, in so far as represented in 

 the ''Alva" collection, is quite small; the largest specimen of the pres- 

 ent series measuring 16 mm. width of carapace. It is most closely re- 

 lated to the preceding described species, Uca annulipes (Latreille), 

 and is not infrequently taken in the same localities. 



It is readily distinguished from Uca annulipes by the following 

 characters: (a) The carapace is distinctly more rectangular, box-like, 

 with the true lateral margins parallel, while the lateral margins of the 

 dorsum are almost parallel. The posterior margin of the carapace is 

 equivalent to two-thirds to three-fifths of the subparallel anterior mar- 

 gin; (b) In the male, the larger cheliped has the upper meral margins 

 and inner carpal margin distinctly denticulate; the fingers are both 

 acuminate, the upper finger being less hooked than is that of typical 

 Z7. annulipes (Latreille), while the lower finger of U. lactea (De 

 Haan) is acuminate, curved, never with a bifid, or notched-truncate tip 

 as in U. annulipes (Latreille). The ridge on the inner surface of the 

 palm is also distinctive. 



References: Ocypode (Gelasimus) lactea De Haan, Faun. Japon. 

 Crust., p. 54, pi. 15, fig. 5, 1837. 



Gelasimus lacteus H. Milne Edwards, Ann. Sci. Nat. Zool., ser. 3, vol 

 18, pi. 4, fig. 16, 1852.— Stimpson, Proc. Acad. Nat. Sci. Phila. 

 vol. X, p. 100, 1858.— IVIiERS, Proc. Zool. Soc. London, p. 20 

 36, 1879.— KiNGSLEY, Proc. Acad. Nat. Sci. Phila., vol. 32, p 

 149, pi. 10, fig. 28, 1880.— Cano, Boll. Soc. Nat. Napol., vol. Ill, p 

 234, 1889.— DE Man, Notes Leyden Mus., vol. 13, p. 22, 1891.— 

 Alcock, Journ. Asiatic Soc. Bengal, vol. 69, pt. 2, 355, 1900. 



Gelasimus annulipes variety lacteus Ortmann, Zool. Jahrb. Syst., vol. 

 VII, pp. 752, 759, 1893-94. 



Uca lactea Schenkel, Verb. Ges. Basel, Bd. XIII, p. 580, 1902.— Steb- 

 BiNG, Ann. S. Af ric. Mus., vol. VI, pt. 4, p. 327, 1910 ; Ann. Dur- 

 ban Mus. vol. II, p. 16, 1917-1920.— Gee, N. Gist, Lingnaam 

 Agric. Review, Canton, vol. Ill, p. 165, 1925-1926.— Kellogg, 

 Lingnan Journ. Sci., vol. V, p. 356, 1927-1928. 



