178 GAMMARID.E. 



similarly formed to that of K. arenaria, but the carpal 

 process is not quite so long, and ends in an upturned 

 point ; the digital process of the hand is also curved at 

 the apex, and terminates in two small dental processes ; 

 the finger is long, slightly curved, and the apex reaches 

 as far as the extremity of the carpal process, against 

 which it appears to be able to impinge. The next two 

 pairs of legs resemble each other, differing from those of 

 K. arenaria only in being furnished with more hairs, 

 which extend on both margins to a considerable extent. 

 The fifth pair of legs are wanting in our single speci- 

 men, but we suppose them to resemble the seventh pair, 

 and if so, the metacarpus is not quite so largely lobed as 

 in K. arenaria. The seventh pair of legs have lost the 

 distal joints, but those that remain indicate parts of a 

 long limb. The caudal appendages have not been closely 

 examined, but they appear to correspond very nearly with 

 those of K. arenaria. 



It is only after much deliberation that we have de- 

 termined to embrace this monocular form in the same 

 genus with a binocular species. The very close resem- 

 blance in the general detail of the two animals induces 

 us to consider that the variation in the organs of vision 

 may he sexual, or dependent upon certain altered physical 

 conditions. We have little doubt but that, like its near 

 ally K. arenaria, this species is a burrower ; but whilst 

 the habitat of the former is on the sea-beach, where the 

 light is strong, that of the latter is under a pressure of 

 from seventy to ninety fathoms of water, where the light 

 can scarcely penetrate, even should the creature not 

 plough its way beneath the soil. 



The specimen from which this description and figure 

 are taken is in the collection of the Rev. A. M. Norman, 

 who dredged it sixty miles east of Shetland. 



