24 Bulletin, Vanderhilt Marine Museum, Vol. Ill 



cent first ambulatory. It has the merus thickened, subequal in length 

 to the carpus, with numerous setae and a few rugae on the upper sur- 

 face; the carpus is laterally compressed, stocky, with a row of seven 

 or eight spines on the upper margin, the remaining surface granulose ; 

 the dactyl is twice as long as the propodus and is three-sided, a mid- 

 rib of spinules accentuated by a fringe of long, thick setae, golden 

 red in color; there is a similar line of setae on both lateral margins 

 and other scattered setae and small tubercles on the surfaces between ; 

 the tip is acute, horn-like. 



The fourth pair of legs are characteristically short, subequal, the 

 merus the longest joint of the series ; the carpus three-fourths as long 

 as the merus, widest distally; the propodus is squarish proximally, 

 with the hinder distal angle produced into a thick, blunt tooth, which 

 is appressed close to the dactyl and extends almost to its tip and 

 bears on the upper side an elongate oval patch of close-set, movable, 

 horny scales; the dactyl is about as long as the proximal part of the 

 propodus and is curved, tapering distally, the apex horn-tipped and a 

 series of horny spinules on the postlateral margin. The entire an- 

 terior lateral margin of the fourth leg bears a series of tufts of long 

 setae. 



The fifth legs are small, arched around under the side of the body ; 

 the propodus long, it and the dactyl forming a weak claw ; there is an 

 elongate-ovate patch of movable scales on the distal part of the pro- 

 podus and continuous on the upper surface of the dactyl. The pro- 

 podus and dactyl are richly furnished with tufts of long setae, 

 especially on the distal end. 

 Synonymy. — Cancer hahamensis Herbst, Naturg. Krabben u. Krebse, 



vol. 2, sect. 3, p. 30, 1796. 

 Petrochirus hahamensis Mary Rathbun, Ann. Inst. Jamaica, vol. 1, 

 art. 1, p. 42, 1897.— Benedict, Bull. U. S. Fish. Comm., vol. 20, 

 part 2, p. 140, 1901. — Hay and Shore, idem, vol. 35, p. 410, 1918. 

 ScHMiTT, Bijdragen tot de Dierkunde Natura Artis Magister te 

 Amsterdam, Afl. 23E, 1924, p. 80.— Boone, Bull. Bingham 

 Oceanog. Coll., vol. 1, art. 2, p. 76, 1927. 

 Pagurus granulahis Oliv., Encycl. Meth., vol. 8, p. 640, 1811. — La- 

 marck, Hist. Anim. sans Vert., vol. 5, p. 220, 1818. — Desmarest, 

 Diet. Sci. Nat., vol. 28, p. 288, 1823.— H. Milne Edwards, Ann. 

 Sci. Nat. Zool. (2), vol. 6, p. 275, 1836, and idem (3), vol. 10, 

 1848, p. 61 ; Hist. Nat. Crust., vol, 2., p. 225, 1834.— Dana, U. S. 

 Explor. Exped. Crust., part 1, p. 453, 1852. — Von Martens, 



