1922.] S. Kemp: Notes on Crustacea Dccapoda. 157 



sharp angle, beneath which there is a strong antennal spine; the 

 hepatic spine is behind the antennal and on a level with it. 

 There is no supra-orbital. Immediately behind the eye the orbital 

 margin is conspicuousl}' depressed, forming a hollow which ap- 

 parently serves to accommodate the eyestalk when it is directed 

 backwards. The eyes are short and stout, with the cornea hemi- 

 spherical and not wider than the stalk. The ocular spot touches 

 the cornea. 



The lateral process of the antennular peduncle reaches about 

 to the middle of the basal segment ; the distal spine of this segment 

 is very long, reaching the articulation of the second and third 

 segments. The free portion of the shorter ramus of the outer 

 flagellum is a little shorter than the fused part, the latter compris- 

 ing 4 or 5 segments. The antennal scale is very broad, only twice 

 as long as wide. The outer margin is slightly convex and ter- 

 minates in a large tooth which reaches almost or quite as far 

 forwards as the apex of the lamella. 



The third maxilliped bears a small arthrobranch. The exopod 

 reaches the end of the antepenultimate segment and the last seg- 

 ment is three quarters the length of the penultimate. 



The first peraeopods reach beyond the scale by more than 

 the length of the chela. The carpus is a little longer than the 

 merus and considerably longer than the chela. The fingers are 

 a little shorter than the palm and are spatulate, without teeth 

 or spines on their inner edges. 



The second peraeopods are stout and reach beyond the an- 

 tennal scale by fully half the length of the chela. The merus 

 is scarcely more than 2*5 times as long as wide and bears a strong 

 spine at the distal end of its lower border. The carpus is conical 

 and very short, about as long as broad and half as long as the 

 merus ; it bears no spines but is fringed with setae anteriorly and is 

 deeply notched on the inner side of its distal margin. The heavj T 

 chela is also clothed with setae, sparsely at the proximal end, 

 but densely in the vicinity of the fingers. The palm is 2'5 times 

 as long as broad and is rather more than twice the length of 

 the fingers. The fingers have inturned tips and on the inner edge 

 of the dactylus in its proximal half there is a large acute tooth. 

 The fixed finger is sometimes unarmed, sometimes with a small 

 tooth in advance of that on the dactylus and with three or 

 four serrations at the proximal end. When the claw is closed the 

 fingers slide past one another like the blades of a pair of scissors 

 and the large dactylar tooth is received into a socket in the fixed 

 finger. 



The last three peraeopods are stout; the third pair reaches 

 beyond the scale by more than the length of the dactylus, the 

 fifth reach the middle of the scale. In each pair the inferior edges 

 of the ischium of merus are thickly set with soft hairs. The 

 lower border of the merus ends in a strong tooth, behind which 

 there are a few spinules. The propodus is stout and is densely 

 clothed with long woolly hairs, which, at the distal end, are so thick 



