3896.] J. R. Henderson — S^omr^ " Invesfigafor " rncjnrlJ.'v.. :,21 



better marked lateral projections. The eye-stalks are very larj^c, and 

 slightly curved, with large deeply pigmented comeee ; they arc ahout 

 one-fourth of their length longer than the antennal pcdnncloH, and 

 about equal in length to the antennular peduncles, when the latter aie 

 fully extended. The ophthalmic scales have narrow sabacute apices, 

 and are separated by a wide interval. The antennal acicle has a 

 slight sigmoid curve, and extends almost to the end of the antennal 

 peduncle; the antennal flagell urn appears to be about two-thirds tlie 

 length of the body. 



The right or larger chelipede is massive and slightly pubescent. 

 The merus is provided with a series of short acute spines on either side 

 of the under surface, but is otherwise smooth. As all the joints move 

 in a vertical plane, the under surface of the merus is excavated ante- 

 riorly to receive the carpus, and the above mentioned spines are placed 

 on the margin of this depression. The upper surface of the carpus is 

 armed with short scattered spiuules, which are most prominent on the 

 inner margin, while the lower surface is reduced to a narrow ttans- 

 verse area. The upper surface of the hand is granulated, the granules 

 especially those on the immobile finger, being crescentic in outline, 

 and all of them are smooth and glabrous. Each granule has an anterior 

 depression or concavity, which gives it the characteristic crescentic 

 form, but some few of the granules are circular with a central depres- 

 sion. On the inner margin of the hand, which terminates in a well- 

 marked subacute lobe, projecting over the insertion of the mobile finger, 

 the granules are replaced by short denticles. On the outer margin of 

 the hand there is a very regular row of granules, which appear square- 

 topped when viewed from the side. The mobile finger is massive, 

 with a faint median carina on its upper surface, and crescentic granules 

 similar to those of the hand. The apices of the fingers are calcareous. 



The left or smaller chelipede has a few spinules on the lower 

 surface of the merus, and on the upper surface of the carpus ; in the 

 latter situation they are arranged in two rows. The carpus is as long 

 as the hand. The hand has a slight dorsal carina, and its upper sur- 

 face is provided with crescentic granules ; the apices of the fingers are 

 corneous. 



The ambulatory legs are faintly pubescent, with tlie dactyli ending 



in acute horny tips. 



The margin of the telson is fringed with short acute spinules. 

 The single specimen gives the following measurements :— 

 Length of body about ... ... .- ••• 16 mm. 



„ „ carapace ... ••• ••• ••' ^ " 



„ „ right chelipede (which cannot be fully extended) 



about ... ... '•• ••• *^ " 



