52 Bulletin, Vanderhilt Marine Museum, Vol. II 



lateral margin; the remainder of this anterolateral margin is rather 

 coarsely serrate from the base of the above spine to the proximal end 

 of the ischium; the merus is the longest joint of the leg and is com- 

 pressed dorsoventrally with both surfaces slightly convex, broader 

 proximally, tapering distally and armed at its anterior distal margin 

 with a single long, acuminate spine which is directed forward; the 

 carpus is almost half as long as the propodus and has the upper and 

 outer surfaces rounded and is produced subdistally into two spines, 

 the outer of which is triangular and nearly twice as long as the inner 

 spine with which it is connected basally by a wide, concave margin; 

 the propodus is nearly as long as the merus but is more flattish; the 

 dorsal edge is carina-like, set with short setae and has a single, promi- 

 nent, acuminate, subdistal spine ; the ventral edge is armed with four 

 large triangulate spines; the propodal finger is produced inwards 

 almost at right angles to the palm and is narowly triangulate and 

 armed on the cutting edge with nine or ten broad, triangular teeth in 

 addition to the apical tooth ; one or two of these teeth has a minute, 

 sharp tooth at its base. The hinged finger is very slender, tapering 

 and curved, devoid of teeth on the cutting edge but armed on the 

 dorsal edge with a single, sharp, long spine which is subproximal in 

 position. 



The second, third and fourth pairs of legs are similar in structure, 

 but the second pair are much smaller in both sexes, than the next pair. 

 Each leg has the proximal joints small, the merus subcylindrical and 

 arched, conforming to the side wall of the body ; the carpus is some- 

 what dilated distally ; the propodus is curiously shaped, being broader 

 than long and rounded on its upper margin; the dactyl is laminate, 

 unequally lanceolate-ovate, with the margins rounded and tapering to 

 an acuminate point. The carpus, propodus and dactyl are intimately 

 articulated, forming a digging process. The outer margins of the 

 merus, carpus, propodus and dactyl are fringed with long setae. The 

 dactyl of the third leg is larger and wider than that of the second leg. 



The fourth pair of legs are subdorsal in position and are the small- 

 est of the series ; each has the ischium and merus elongated, subequal 

 in length, cylindrical ; the carpus, propodus and dactyl are similar to 

 those of the preceding leg but are very small and fragile. 



Synonymy: Raninoides laevis lamarcki A. Milne Edwards and 

 BouviER, Mem. Mus. Comp. Zool., vol. 47, p. 229, pi. 1, figs. 8 and 

 9, pi. 2, figs. 4 and 5, 1923. 



