106 Bulletin Vanderhilt Marine Museum, Vol. V 



with its outer margin divided into two protruberant lobes; the pro- 

 podus is shorter on its cristate upper margin than is the carpus; the 

 upper half of the outer face of the palm is rugose with two or three 

 nodes, one of which occurs above the base of the upper finger ; below 

 these there are two longitudinal grooves alternating with two long- 

 itudinal thick carinae; the lower third of the palm is roughly pitted. 

 The fingers are decidedly deflected, stocky, the cutting edges armed 

 with a few low teeth, the tips spoon-shaped; the outer surface is 

 longitudinally grooved. In the male the fingers are all black, this 

 black patch extending a very short distance back on the outer face of 

 the lower finger for a much greater distance, nearly half the palm, 

 on the inner surface of the palm. 



The ambulatories are rather delicate, distinctly decreasing in length 

 from the first to fourth pairs ; the meral joints are all decidedly com- 

 pressed laterally and have the lower margin excavate for the reception 

 of the related carpal joints when the legs are retracted ; the carpus and 

 propodus are subequal, the two considered together about as long as the 

 related merus; each article is nearly as wide as long, with the outer 

 lateral margins cristate, the upper surface lobulated and the inner 

 lateral margin carinate; the dactyl is about as long as the propodus, 

 stocky, with a curved strong horny tip and a dense fur-like setae on the 

 distal two-thirds of its inner lateral margin. 



Keferences : Cancer exsculptus Herbst, Naturg. Krabben und Krebse, 

 Bd. I, pt. II, p. 265, Atlas, pi. 21, fig. 121, 1798. 



Cancer melissa Herbst, Naturg. Krabben und Krebse, Bd. Ill, pt. II, 

 p. 7, pi. 51, fig. 1, 1798. 



Euxanthus melissa Stimpson, Proc. Acad. Nat. Sci. Phila., vol. X, p. 

 33, 1858. — A. Milne Edwards, Nouv, Archiv. Mus. Hist. Nat., 

 Paris, t. I, ser. 2, p. 293, 1865.— Tozzetti, T., Magenta Crost. p. 

 27, pi. 3, figs. 1-7, 1877.— Muller, F., Verb. Ges. Basel., vol. 8, 

 p. 474, 1890. — Henderson, J. R., Trans. Linn. Soc. Zool. ser. 2, 

 vol. 5, p. 359, 1893.— Ortmann, Zool. Jahrb. Syst., vol. VII, p. 466, 

 pi. 17, fig. 9, 1893-94. — Alcock, Journ. Asiatic Soc. Bengal., vol. 

 67, pt. 2, p. 110, 1898. — BoRRADAiLE, Proc. Zool. Soc. London, 1900, 

 pt. 2, p. 586.— DE Man, Bidrag tot Dierkunde Zool. Genoot. Natur. 

 28e, Afl. p. 1, 1929. 



Cancer mamillatus H. Milne Edwards, Hist. Nat. Crust, t. I, p. 376, 

 1834. 



Melissa mamillata Strahl, Weigmann's Archiv. fur Naturges., vol. 27, 

 I, p. 103, 1861. 



