258 Transactions. — Zoology. 



chelate, palni even (fig. 1, d). In other respects the animal was exactly 

 like the other two specimens ; whether the difference in the gnathopoda in- 

 dicates a difference of sex or not I cannot say. 



Genus Podocerus. 



Poclocerus latipes, sp.nov. PL xix., fig. 2, a to d. 



Male. —Second gnathopoda stout, propodos produced inferioiiy into a 

 stout broad process defining the palm, which is deeply indented ; dactylos 

 strong, inner edge serrated proximally, but with distal part smooth. Fourth 

 pereiopoda with all the joints much expanded, all except the propodos being 

 as broad as long. Other pereiopoda normal. In all other respects closely 

 resembling Podocerus frequens. 



■ Female. — Differs in having the second gnathopoda not produced as in 

 male, palm concave and defined by two stout seta?. 



Colour, yellowish-white. Length about ^ inch. 



Hah. Lyttelton Harbour. 



This species may prove to be only a variety of P. frequens. I should 

 without hesitation have considered it as such had it not differed in the 

 second gnathopoda as well as in the fourth pereiopoda. The peculiar ex- 

 pansion of the fourth pereiopoda appears to be subject to considerable varia- 

 tion, probably it increases with the age of the animal. I am quite ignorant 

 of the function of these expanded pereiopoda. 



Genus Paranaenia, novum. 



Antennas subequal, superior with a secondary appendage, both with 

 multiarticulate fiagella. Appendage of mandible of three broad setose 

 joints, as in Podocerus. Maxillipedes with well developed plates on ischios 

 and meros. Gnathopoda sub-chelate, first small in both sexes, second 

 small in female, very large in male. Last pair of pleopoda biramous, 

 rami styliform. Telson single, ending posteriorly in two conical pro- 

 jections. 



I have made this genus to include three species found in Lyttelton 

 Harbour — namely, P. typica, sp. nov., P. longimanus, sp. nov., and P. denti- 

 fera— Moera dentifera, Haswell. It appears to bear a close resemblance to 

 Namia, Spence Bate, but differs in possessing a secondary appendage on the 

 upper antenna, and in the form of the telson. 



In P. typica and P. dentifera the coxae of the third segment of the 

 pereion is large, and produced along the inferior edge of the coxaa 

 of the second segment in the male, while the coxae of the female are 

 normal. P. longimanus has the coxaa normal both in the male and in 

 the female. 



In the description of P. dentifera I have embodied Mr. Haswell' s de- 

 scription, but have added to and altered it where I thought necessary. 



