206 Bulletin, Vanderhilt Marine Museum, Vol. II 



late; below this are several irregular, flat tubercles; a longitudinal 

 carina composed of bead-like tubercles runs from the base of the pro- 

 podus to the inner angle of the propodal finger; a second, similar 

 carina runs almost to the tip of the propodal finger ; below this carina 

 a series of ten oblique ridges, the distal of which are bead-like, orna- 

 ment the lower outer surface of the propodus and lower finger; the 

 fingers are subequal, spoon-shaped at the tip, the lower finger is armed 

 with five teeth along the cutting edge, inside of which are a series of 

 tufts of coarse setae ; the upper finger is similarly toothed and tufted. 

 The fingers meet only at the tips. 



The ambulatory legs are similar, successively increasing in length 

 posteriorly, the first pair being shorter than the second by the length 

 of almost half the propodus and the dactyl of the latter; the third, 

 fourth and fifth pairs increase in length by less than half the length 

 of the dactyl. All except the first pair have the basal joint produced 

 into a tooth-like process at both its inner and outer distal angles ; the 

 basis fused with the ischium, the latter produced to a tooth-like process 

 on the dorsal anterior distal angle only on the fourth and fifth pairs 

 of legs ; all four pairs of legs have merus conspicuously dorsoventrally 

 compressed, slightly more than twice as long as wide with the frontal 

 margin ridge-like; the distal margin multidentate ; the upper surface 

 denticulated by many oblique striae; the carpus is half as long as 

 the merus, very narrow basally and dilated distally, produced to an 

 acuminate point on the anterior distal angle and longitudinally tra- 

 versed by a wide, groove-like depression and two carinae. The pro- 

 podus is about as wide but somewhat longer than the carpus, has a 

 distinct longitudinal groove near its anterior margin and a series of 

 spines and bristles on its postlateral margin; the dactyl is very pow- 

 erful, terminating in a strong, claw-like tooth and armed with four 

 longitudinal rows of strong, tooth-like, horny spines, the series suc- 

 cessively increasing in size distally. 



Synonymy. — Pagurus maculatus Catesby, Nat. Hist. Carolina, Flor- 

 ida and Bahama Islands, vol. 2, p. 36, pi. 36, fig. 1, 1743. 



Cancer grapsus Linne, Syst. Nat., ed. 10, vol. 1, p. 630, 1758. 

 Grapsus pictus Latreille, Hist. Nat. Crust., vols. 6 and 7, p. 69, 1802 

 and 1803. 



Grapsus wehhi Milne Edwards, Ann. Sci. Nat., Ser. 3, Zool., vol. 20, 

 p. 16 and p. 167 (133), 1853. 



Grapsus goniopsus pictus DeHaan, Faun. Japon. Crust., p. 33, 1835. 



