366 Dr. J. G. de Man on a Species of 



cjlindrical and, but for the proximal fourth part, gradually 

 thicken to the distal articulation ; thej are not quite straight, 

 but slightly curved inward at their proximal fourtii, the inner 

 margin appearing here, therefore, slightly concave, the outer 

 slightly convex. The chela, also very slender, is 71 mm. 

 long, about one fourth longer than the carpus ; the palm, 

 b2 ram. long, is but little shorter than the carpus and almost 

 three times as long as the fingers, which measure 19 mm. 

 Just in the middle the palm is 3 mm. broad, exactly as broad 

 as the carpus in the middle ; near the carpal articulation it is 

 3'25 mm. broad, appearing here a little less broad than the 

 far end of the carpus ; near the articulation of the fingers, 

 finally, the palm is 3*7 mm. broad and 2-75 mm. thick, 

 so that it appears here slightly compressed. Just in the 

 middle the palm is also 2*7.5 mm. thick, and near the carpal 

 articulation 3 mm., so that the palm may be described as 

 cylindrical. Viewed from above (fig. 3) the fingers appear 

 slightly curved inward. The immobile finger (fig. 4) very 

 slightly narrows towards the tip, appearing near the latter 

 hardly less broad than at its base ; the dactylus, which is a 

 little longer, tapers more distinctly, and appears therefore 

 near the tip narrower than the immobile finger. At one 

 third of its length from the articulation (figs. 4 & 5) the 

 dactylus bears a small conical tooth, and midway between 

 this tooth and the articulation another, also conical though 

 somewhat compressed and more acute tooth, which is a little 

 larger ; immediately behind the distal tooth of the dactylus 

 the immobile finger is armed with a somewhat larger conical 

 and acute tooth, and between this tooth and the articulation 

 with a long prominence, which is subdivided into five small 

 teeth, of which the distal one is the largest, conical, like the 

 fourth, whicli is smaller, whereas the first three are the 

 smallest o£ all (tig. 5). The inner margins of the fingers are 

 covered with felted hairs^ which, as Mr. McCulloch informs 

 me, may be very dense or almost absent. Palm and fingers 

 carry (tig. 6) on their inner margin a double row of small 

 subacute spinules similar to those of the body and 0*2 mm. 

 long; similar spinules, though much smaller, are distributed 

 on the upper and lower surface and on the outer margin of 

 palm and fingers, those on the outer margin being also 

 arranged in two rows. On the inner half of its surface tiie 

 carpus is sparsely covered with similar subacute spinules as 

 the palm, which are a little larger, viz. 0'2t5 mm. ; those on 

 the outer half are much smaller, but much more crowded. 

 The spinules with which the merus is covered are of the 

 same size as the larger ones of carpus and chela, except on 



