84 Transactions.—Z oology. 
chiefly on the proximal half; on the outer margin mostly towards the 
distal part are also a few small tufts of sete, but these lie close along the 
joint and are very easily overlooked. Palm transverse defined by a short 
stout tooth and having short stout sete along the whole palm. Dactylos 
thick and strong, not.longer than palm. First two pairs of pereiopoda sub- 
equal, rather slender, last three broad, increasing slightly in size posteriorly, 
basos moderately large subrectangular, anterior edge with a few small sete, 
posterior edge minutely serrate, a very minute seta arising at each serration, 
meros broad serrated, with moderately long strong sete, carpus expanding 
somewhat distally, setose ; propodos setose on anterior side only, numerous 
strong sete arising at the base of the dactylos ; dactylos considerably nar- 
rower than propodos, ending in two sharp points, the principal one longer 
and more eurved than the other. Inferior edges of first three segments of 
pleon supplied with several small set. Posterior pair of pleopoda only 
reaching very slightly beyond the two preceding pairs, of which the first 
pair is slender, having the peduncle considerably longer than the rami, 
rami with long strong sets» at their extremities ; second pair stouter, rami 
with similar long strong sete at end; third pair having the rami broad 
and setose more especially on the outer edge. Telson double, each half 
concave posteriorly with two long sete arising from the hollow, and having 
another hollow on the outer side towards the distal end with a single seta 
` springing from the hollow. 
Length, about + of an inch. 
Hab. Lyttelton Harbour. 
This species is very elose to M. quadrimanus, Dana, M. grossimanus, 
Montagu, M. viridis, Haswell, M. truncatipes, Spinola, but differs from all 
in the form of the second pair of gnathopoda. In this respect it closely 
resembles M. blanchardi, Spence Bate, but differs in having the basa of the 
three posterior pairs of pereiopoda dilated, in having the secondary appen- 
dage of upper antenna not so long as the primary flagellum, and in other 
points. It also resembles M. tenella, Dana, but that species has the base 
joint of upper antenna “ not stout, second very long ; " the two species also 
appear to differ somewhat in the form of the second gnathopoda, and also in 
the length of the posterior pair of pleopoda. 
Genus Podocerus, Leach. 
(Cat. Amphip. Crust. Brit. Mus., p. 252.) 
* Eyes small, situated on a lobe between the superior and inferior 
antenne. Superior antenne having a secondary appendage, which is 
generally very minute. Inferior antenns robust, the flagellum consisting 
of but few articuli and as stout as the peduncle, the hairs towards the 
extremity being developed into spines, which increase in strength as they 
