268 Transactions. — Zoology. 



joints wliicli rapidly diminish in size ; a few short setse are pre- 

 sent on the fifth joint of the peduncle and on the various joints 

 of the fiagelluni. Uropoda inserted in lateral emarginations, 

 at the end of the pleon ; peduncle consisting of a somewhat 

 large joint slightly more than filling the emargination, the 

 rami represented by small lobes each bearing a few rather 

 long setaB. Opercular plate under the pleon consisting of a 

 single piece, ovate in form, bearing indistinct marks of a 

 longitudinal suture along the middle and a transverse one 

 towards the distal end. 



Length about 2- 5mm. 



Colour whitish, witli scanty marblings of greyish-brown. 



Hah. Akaroa : a single specimen on the under-sm^face of a 

 stone exposed at low tide. Lyttelton : a single imperfect 

 specimen forwarded by Mr. R. M. Laing. 



This species appears to resemble Jceropsis marionis, Bed- 

 dard, somewhat closely, but differs in the uropoda, the 

 antenucE, &c. 



Munna neo-zelanica, Chilton, MS. 



2Iale. — Body narrow-elliptical, length about two and a 

 half times the greatest breadth. Head not broader than first 

 segment of pereion, deeply notched on each side for the bases 

 of the antennae ; front margin straight, with rounded upper 

 lip attached ; the lateral portion behind the insertion of the 

 antennae has the anterior angle somewhat acute, the posterior 

 angle rounded and slightly produced and bearing the mode- 

 rately-sized eyes. First four segments of the pereion subequal 

 in length, gradually increasing in width up to the fourth, 

 which is the widest ; next three segments subequal, slightly 

 shorter than the preceding, curving slightly backwards at the 

 sides ; all the segments having the lateral margins straight 

 or slightly rounded. Pleon as long as the four preceding seg- 

 ments of the pereion, pear-shaped, narrowing posteriorly, 

 extremity rounded. 



Antennules with the first two joints stout, others slender, 

 reaching a little beyond the end of the third joint of the 

 antennae. Antennae considerably longer than the body. 

 First pair of legs very large and strong and of peculiar 

 shape, the basos small, ischios very thick and strong, hoi- 

 lowed anteriorly to receive the distal end of the limb when 

 bent back ; carpus expanding distally, mallet-shaped ; pro- 

 podos small and rounded. Succeeding legs of normal shape, 

 last three pairs longer than the others, about as long as the 

 body. 



Female with the body of the same shape as in the male, 

 not broader ' differs from the male in the first pair of legs, 

 which are short and imperfectly subchelate, carpus broader 



