64 CAPRELLID^E. 



female (figured above) they articulate quite at the ante- 

 rior extremity. This is the only reliable distinction that 

 we have been able to discover between the two sexes. 

 The hand in this pair of legs is ovate, the palm convex, 

 being defined by a process surmounted by a spine. The 

 palm is emarginate near the posterior extremity, and 

 waved a little anteriorly. 



We consider this species to be identical with that 

 figured by M. Milne Edwards in the place cited, as also, 

 probably, with the (7. Hystrix of Kroyer, although the 

 description of the head given by the former author, 

 " ovalaire, courte et arrondie en dessus," seems to have 

 been derived from C. acanthi/era, and his observation that 

 the penultimate joint of the last three pairs of legs is 

 narrow and without a tooth on the inner edge, disagrees 

 with our species (although agreeing with Kroyer's details 

 of the legs of C. hystrix). Unfortunately M. Milne 

 Edwards is unable to clear up this difficulty, the speci- 

 men from which he drew his figure not having been 

 preserved. 



Considering the C.acuminifera of Latreille to be identical 

 with C. acanthifera of Leach, we have been obliged to 

 take up Kioyer's name for the present animal, although 

 not quite agreeing with his description as above noticed. 



We have received specimens of this species from 

 Millport, sent to us by Mr. Robertson ; from Northum- 

 berland, where it was found by the Rev. A. M. Norman, 

 and we have taken it in the neighbourhood of Ply- 

 mouth. 



