250 Transactions.—Z oology. 
pectinated sete, bearing also one spine above three-fourths as long as the 
dactylos. Sixth pair of legs with the meros longer than the ischios, nearly 
as long as the carpus, both bearing long sete; propodos narrower than 
carpus, bearing at the extremity the dactylos and a spine about three-fourths 
as long as the dactylos, and on distal half of the posterior margin a row of 
about six or seven short stout sete. Seventh pair similar in form to the 
sixth ; meros rather longer than carpus, both thickly fringed on each side 
with long plumose hairs, propodos having the end and greater part of the 
posterior margin bordered with stout straight sete. First five segments of 
pleon subequal in length, sixth not quite so long as the two preceding, last 
segment triangular, rounded posteriorly, and bearing three or four long 
sete. Last pair pleopoda long, peduncle stout, reaching as far as the end 
of last segment of pleon, outer edge bearing long hairs ; outer branch short, 
of three joints; inner branch nearly five times as long as the outer, having 
about thirteen joints rather irregular in size ; both branches bearing numer- 
ous long sete. 
Colour, greyish. Length, about 4 inch. ‘ 
Hab. Lyttelton Harbour. A single specimen found creeping in mud at 
the root of some seaweed. 
Genus Janira, Leach. 
(Bate's and Westwood’s “ British Sessile-eyed Crustacea,” vol. ii., p. 335.) 
| As this genus is new to New Zealand, I give here the generic characters. 
“ Pereion serrated along the lateral margins; pleon having all the seg- 
ments coalesced into a single plate ; covered in the female, beneath with a 
large flat membranous plate concealing the branchial feet; and furnished 
at the tip with a pair of elongated bifid uropoda. Outer antenn® as long 
as the animal. Dactyla biunguiculate.” 
Janira longicauda, sp. nov. Pl. xviii., fig. 2, a to b. 
Eyes large. Head rectangular, rather more than twice as broad as 
long, produced into a rostrum rounded at the end reaching nearly to the 
end of the second joint of the peduncle of inner antenne. Inner antenne 
reaching nearly as far as the end of the fourth joint of peduncle of outer 
antenne ; first joint stout, second about half as long, and with three or four 
stout sete at distal end; third about as long as second but more slender ; 
flagellum slightly longer than peduncle, sete few and delicate. Outer 
antenne as long as body; first three joints of peduncle short, the second 
bearing on its outer edge a small articulated plate, tipped with a few stout 
‘sete ; fourth joint longer than the three basal joints together, a few setæ 
on each side ; fifth slightly longer than the fourth, narrowed at the base. 
Segments of pereion with lateral margins indented and fringed with stout 
sete, Body of about equal width throughout. Pleon nearly circular, much 
