446 PROF. C. CHILTON ON DETO, A SUBANTARCTIC 



which end subacutely. a transverse row o£ small rounded tubercles on the 

 second, third, fourth, and fifth segments; last segment without tubercles, 

 surface slightly granular, much broader than long, extremity broadly 

 rounded. 



Eyes somewhat small, narrow-oblong. 



Antennae extremely thick and stout, second joint of peduncle longer than 

 the first or third, fourth joint slightly shorter than fifth, which is narrowed 

 at the base and expanded distally ; flagellum much expanded, of three sub- 

 equal joints, each much broader than long, the minute fourth joint hardly 

 visible ; last joint of peduncle and the flagellum densely covered with 

 short woolly hairs. 



Legs subequal with a few short spinules, inner margins with woolly 

 hairs. 



Uropoda with the basal portion very broad, meeting in the median line 

 and extending slightly beyond the end of the terminal segment ; outer 

 margin expanded and produced at the outer posterior angle, inner rami 

 contiguous along the median line, longer than the outer rami, both rami 

 rounded at the end and covered with minute setse. 



Length of largest specimen 24 mm. ; greatest breadth 11 mm. 



Colour. Slaty grey. 



Female. — Differing from the male in the following points : — Body broader 

 and less convex, the tubercles on the head and perseon much smaller and less 

 prominent, forming only small rounded tubercles ; epimeral expansions, 

 especially on the posterior segments, showing an oblique ridge running 

 backwards and outwards ; antennae stout but much more slender than those 

 of the male, the fifth joint of the peduncle slightly sinuous, and when folded 

 back fitting into a groove on the outer surface of the fourth joint ; flagellum 

 about two-thirds as long as the last joint of the peduncle, its joints as long 

 as broad or longer, the first two subequal, the third as long as these two' 

 too;ether, fourth minute. 



Length 19 mm. ; greatest breadth 11 mm. 



Colour. Slaty grey. 



Habitat. Ewing Island, in the Auckland Islands group, New Zealand ; 

 found on the sea-shore (collected by Dr. L. Cockayne, F.R.S., and Mr. E. 

 Jennings). 



This remarkably large and striking species has been found only in the 

 Auckland Islands, where its lives under seaweed, etc., on the sea-shore. 

 Filhol gives the locality as " Nord de la Nouvelle-Zelande, Auckland," but 

 this has no doubt arisen from the unfortunate confusion of the Auckland 

 Islands, which lie about 200 miles to the south of New Zealand, with the 

 Auckland City and Province in the north of New Zealand. I have seen 

 only about half-a-dozen specimens^ all from Ewing Island, these being all 

 males except one. The differences between the two sexes are extremely 



