J. '21. 21 



propodite. At the proximal end of this joint the surface 

 is raised into a large rounded prominence or tubercle, at the 

 end of the ridge, separating the first from the second depression. 

 To the left of this and opposite the end of the ridge on the 

 inner side of the first depression there is another but much 

 smaller tubercle. The whole of the upper surface of the hand, 

 with the exception of the marginal teeth, which are smooth, 

 is thickly studded with low rounded granules. On the under 

 surface of the margin, below the lines of teeth, there is a fringe 

 of fine hairs, arranged more or less regularly in tufts. The 

 setae are more than twice as long as the teeth. The under 

 surface of the hand is almost smooth, with the exception of a 

 number of low scale-like tubercles bearing setae and situated 

 near the outer margin. The cutting edges of the fingers are 

 furnished with small calcareous teeth. 



The left cheliped is very much smaller than the right. The 

 merus, wihch is laterally compressed, bears tufts of setae on its 

 upper edge, and a few teeth on either lower margin. The carpus 

 bears a row of sharp teeth on the distal part of the upper sur- 

 face, the row curving down on the inner side near the end. The 

 teeth increase in size anteriorly. The hand broadens rapidly 

 from its base to the point of origin of the dactyl, and then 

 narrows to the distal end of the fingers. The fixed finger is 

 much broader than the dactyl at its base, but is narrower than 

 the dactyl at its tip. The outer edge bears a row of teeth, which 

 are largest in the middle and decrease in size towards either 

 end. The fingers end in yellow claws. The outer edge of the 

 dactyl is smooth except for a few tubercles near the distal end. 

 Just opposite the base of the dactyl there is on the upper sur- 

 face of the propodite and towards the outer edge a deep round 

 depression. Its edges are not very sharply defined. The 

 whole upper surface of the propodite is studded with rounded 

 granules as in the case of the right cheliped. The upper sur- 

 face of the dactyl is practically smooth. There is a large 

 prominence on the middle of the upper surface, at the proximal 

 end, as in the right cheliped. The under surface is nearly 

 smooth. The setae are grouped as in the right chela, but 

 are distinctly longer. The cutting edge of the dactyl is fur- 

 nished with a long row of slender transparent spines. There 

 are also a few of these on the cutting edge of the fixed finger 

 interspersed with blunt calcareous teeth. 



All the joints of the walking legs (second and third pairs of 

 pereiopods) are laterally compressed, and all bear fringes of 

 long setae. In the first right walking leg the lower edge of 

 the merus bears from six to eight strong teeth ; the distal part 

 of the carpus has six or seven teeth on the upper surface ; the 

 upper edge of the propodite has eight to ten teeth ; the dactyl 

 is furnished with about fourteen or fifteen small slender spines 

 on the distal part of its lower edge, is curved, is longer than 

 the propodite, and ends in a sharp claw. 



In the only specimen of this species which I have been able 



