142 Bulletin, Vanderhilt Marine Museum, Vol. II 



subequal and subequally spaced, acuminate, up-pointing teeth, includ- 

 ing the postorbital tooth. The postlateral margins are one and one- 

 half times as long as the anterolateral and are abruptly convergent. 

 The posterior margin is straight, about as wide as the interorbital 

 region. There is a strong fringe of clavate setae across the frontal 

 margin, almost obscuring it. There are also numerous other spinose 

 and clavate setae on the anterior half of the carapace and a few 

 shorter ones on the posterior half. The urogastric, cervical and median 

 frontal grooves are but slightly defined. There is a weakly developed 

 subhepatic tubercle and the pterygostomian region is smooth, tumid. 

 The female abdominal belt is oval, seven-segmented, heavily fringed 

 on the lateral margins with setae. The specimen under discussion 

 carries about 500 eggs. 



The antennulae have a large basal article and the two free articles 

 are clavate, folding transversely beneath the frontal border. 



The antennae have the fused basal article in the infra-orbital sinus, 

 its inner distal angle touching the down-bent point of the frontal mar- 

 gin ; the second and third peduncular articles are small, the multiarticu- 

 late antennae is slightly longer than the long diameter of the orbit. 



The eyestalk is of moderate size, slightly constricted on the outer 

 face, produced distally on the dorsal surface, projecting above the 

 cornea ; the latter is deep brown, subspherical. 



The external maxillipeds have the ischium rectangular, its distal 

 margin slightly sinuate ; the merus squarish, with its outer distal angle 

 truncated for the reception of the palp. 



The chelipeds are decidedly unequal in both sexes; the merus is 

 short, its upper margin granulose; the carpus is elongate, convex on 

 the upper surface and covered with sharp spines one of which accen- 

 tuates the inner angle ; the propodus of the small claw has the entire 

 upper and outer surface covered with rows of spine-like tubercles ; the 

 large palm also has these tubercles on the upper and outer two-thirds, 

 but on the proximal third of the outer face they become obsolete, it 

 being smooth. The fingers are deep brown, the color not extending 

 upon the palm. The upper finger of the large palm has a few spinose 

 tubercles on the proximal part of the upper surface ; it is more slender 

 and curved than the lower finger, which is stocky ; both are set with 

 large teeth. 



The ambulatories are slender, the carpal and propodal joint are 

 spinose on the upper lateral margin; the distal end of the propodus 

 is produced laterally, reinforcing the dactyl joint; the dactyli are 



