290 



Antennular peduncle rather slender, 5,4-times longer than wide at the distal extremity 

 of median article ; visible part of basal article one and a half as long as the second and twice 

 as long as the thircl article, second article one and a half as long as wide distally. Stylocerite 

 reachingf to the distal extremity of basal article. 



Carpocerite as slender as the antennular peduncle, 5,65-times longer than wide in the 

 middle, projecting beyond the antennular peduncle by the whole length of third article; lateral 

 spine of basicerite slightly turned outward, longer than the stylocerite, almost reaching to the 

 middle of median antennular article, upper spine well-developed, measuring one-fourth of the 

 lateral or inferior. Terminal spine of scaphocerite reaching to midway between the tips of the 

 antennular and antennal peduncles and projecting almost by half its length beyond the narrow 

 scale that reaches to the distal end of median antennular article. 



Syn. septemspinosus is characterized by the posterior margin of the sixth abdominal somite 

 being armed with seven acute spines; the largest are the spiniform teeth at the outer 

 angles, another spine, half as long, is observed in the middle of the margin and between this 

 spine and the external ones occur at either side two other teeth, one, as large as the median 

 tooth, midway between it and the external tooth, the other placed either near the median tooth 

 or near the other submedian : of these two teeth namely, which are the smallest of all, the 

 right is placed just near the other submedian tooth, the left just near the median tooth, but 

 this is, of course, an abnormality. Telson 3-times as long and twice as wide anteriorly as the 

 posterior margin is broad; the latter is not much prominent, its outer angles are acute, though 

 very short, and the longer inner spinules, that show exactly the same length as those of the 

 anterior pair of the upper surface, project by half their length beyond the posterior margin. 

 Anterior pair of spinules 0,2 mm. long, implanted far before the middle, the proportion between 

 the length of the telson and the distance of the anterior pair from the posterior margin being 

 1,44; posterior pair 0,23 mm. long, just one-ninth the length of the telson, proportion between 

 the distances of either pair from the posterior margin 1,92, the two pairs being rather far 

 remote from one another. 



Merus of large cheliped 2, 3-times longer than wide, upper margin terminating in an 

 acute tooth. Relative dimensions of the large chela : fingers i; total length 3,9; height 1,54, this 

 chela being 2,5 3-times longer than high; like in Syn. bituberculatus de Man, the anterior margin 

 of the palm terminates in two tubercles; of these tubercles that are directed straight for- 

 ward and subacute, the inner is twice as large as the outer. 



Merus of small cheliped 3-times longer than wide, upper margin unarmed at apex. Large 

 chela 6,28 mm. long, 2,45-times as long as the other. Relative proportions of the small chela: 

 fingers i; total length 3,2; height 1, this chela 3,2-times as long as high. The dactylus, that 

 has a rather stout form, though it is tapering and not dilated, carries several tufts of setae 

 near the outer and inner margins and several setae occur also on the outer face of the palm 

 near the base of the immobile finger. 



Second and following legs of a stout shape. Merus of second legs 3,6-times longer 

 than wide. First segment of the carpus 2,32-times as long as thick distally, the four following 

 taken together 1,38-times as long as the first; second, third and fourth segment equal; chela 



15S 



