30 ]>K. W, T. CALMAN ON A COLLECTION OF 



distinct notch. The upper margin of the orbit presents two fissures, of which the inner 

 is a A^-shaped notcli, while the outer is closed and inconspicuous. Tlie external orbital 

 tooth is blunt, and behind it on the lateral margin are two w^ell-marked teeth, with a 

 slight indication of a third. The two lobes of the lower orbital margin are sharply 

 triangular, the inner being the more prominent, and have the edges hardly or not at all 

 granulated. On the sub-hepatic region just behind the lower orbital margin there is a 

 blunt transversely elongated tubercle or short ridge. 



The eye-stalk carries about three tubercles, the largest of which, close to the corneal 

 region on the anterior edge, is in the form of a flattened lobe with a rounded distal edge. 

 The basal joint of the antenna has a very prominent longitudinal keel on its ventral 

 surface, and externally a blunt laterally compressed lobe springs from near the base of 

 the joint and is directed forwards and outwards. The two succeeding joints of the 

 peduncle are narrow and cylindrical. The ischium of the third maxillipeds has two 

 marked diagonal ridges on its ventral surface. The merus is produced distally external 

 to the insertion of the carpus as a conspicuous rounded lobe extending to more than half 

 the length of the carpus. 



The chelipeds in the single male specimen examined are rather feeble and are perhaps 

 not fully developed. The palm is subcylindrical and has faint longitudinal ridges on its 

 outer surface. 



The ambulatory legs of the second and third pairs have the upper (or anterior) 

 edge of the merus cut into four teeth. The crest on the anterior margin of the carpus 

 has no distinct proximal lobe, but the distal lobe is a sharp tooth set a little way back 

 from the end of the joint. The propodus is much expanded, being three and a half times 

 as lono- as broad, and the anterior edge is strongly convex. In the second pair of anibu- 

 latorv legs (but in none of the others) there is, on the ventral surface of the merus at its 

 proximal end, a short longitudinal ridge, which is minutely and regularly granulated. The 

 abdomen of the male has all the somites free and each is crossed about the middle of its 

 length by a transverse ridge. The lateral margins are slightly concave and form a 

 distinct angle at the sixth somite. The sternum and abdomen are finely granulated. 



The first abdominal appendages of the male are stout and the two lobes of the tip are 

 closelv approximated, the outer extending a little beyond the inner. 



The specimen from which my description and figures are taken agrees minutely with 

 the specimens in the British Museum with which I have compared it. According to 

 Miers's figure, the abdomen of the female is subcircular in outline, with all the somites 

 distinct and transversely ridged as in the male. 



CuviopoJia varinipes of Paulson is very likely identical with the present species. His 

 fio-iu-es show the general shape of the carapace to be very similar, though the lateral 

 margins arc more nearly parallel. The transverse grooves and ridges of the surface and 

 the granulation of the more prominent parts correspond Avith the sj^ecimen here 

 described and figured. Paulson's figure of the entire animal (/. c. fig. 4) is, ap^mreutly, 

 inaccurate as regards the shape of the frontal lobes, which his enlarged figure (fig. 4 a) 

 shows to differ but sliglitly from the present form. The outer of the two fissures in the 



