120 Bulletin Vanderhilt Marine Museum, Vol. Y 



posed of five articles, the third, fourth and fifth segments being fused. 

 The lateral margins of the belt are fringed with dense, felt-like setae. 



The male chelipeds are massive and are approximately equal. The 

 merus is trigonal, with both inner and outer lateral margins rough- 

 ened, the outer lateral margin has three or four sharp denticles. The 

 carpus is smooth and convex on the upper surface and with a very- 

 prominent, acute tooth at the inner distal angle and a much smaller, 

 relatively inconspicuous denticle on the inner carpal margin; the 

 propodus is massive, the palm smooth, except for two or three wart- 

 like tubercles, thick, with the outer surface slightly convex. The fin- 

 gers are curved, meeting only at the hollowed, spoon-like tips; the 

 gape is a wide oval ; only the lower finger has a single tooth, bluntly 

 conical and subdistal in position. Both fingers are longitudinally 

 grooved and the upper finger bears a double row, each composed of 

 five or six well separated tubercles. 



The ambulatories successively decrease in length from the first to 

 fourth pairs. Each leg has the merus, carpus and propodus somewhat 

 compressed laterally, the upper surfaces slightly rounded, the merus 

 smooth except for a few denticles along the lateral margins, partic- 

 ularly the upper lateral margin ; on the upper half of the carpus there 

 are approximately two well separated rows of these denticles, while the 

 entire upper surface of the carpus is covered with these denticles as is 

 also the more slender dactyl, where the tubercles become larger; the 

 tip of the dactyl is a brown, horny claw. Both lateral margins of the 

 ambulatories are fringed with long bushy setae. 



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

 Bd. I, pt. II, p. 186, 1796, atlas pi. XI, fig. 66, 1798. 



Etisus dentatus H. Milne Edwards, Hist. Nat. Crust., t. I, p. 411, 

 1834.— Nouv. Archiv. Mus. Hist. Nat., T. IX, p. 233, 1873.— Lenz 

 AND Richters, Beitrage zur Krustaceenf auna von Madagascar, ges. 

 XII, p. 421, 1881.— Dana, U. S. Explor. Exped. Crust., vol. XIII, 

 pt. I, p. 185, pi. 10, figs. 2a-b, 1852.— Miers, Proc. Zool. Soc. 

 London, p. 134, 1877. — Richters, in Mobius Meeresfaun. Mauri- 

 tius, vol. II, 17, p. 146, 1880. — Haswell, Cat. Australian Stalk 

 and Sessile-Eyed Crust., p. 53, 1882.— Alcock, Journ. Asiat. Soc. 

 Bengal, vol. 67, pt. 2, p. 129, 1898.— Rathbun, Rept. U. S. Fish 

 Comm. for 1903, Bull. 23, pt. 3, p. 850, 1906.— Stebbing, Ann. S. 

 Afric. Mus., vol. VI, pt. 4, p. 298, 1910.— Rathbun, Trans. Linn. 



