G. M. Thomson. — On New Zealand Crustacea. 233 



similar ; propodos subquadrate, about twice as long as broad, palm nearly 

 transverse, slightly oblique, with a double row of numerous, close-set, short 

 spines, and its point of impingement defined by a tuft of long spines and 

 setse. CoxfB of both pairs of gnathopoda and of the first two pairs of 

 pereiopoda fringed with 10-12 simple hau-s on their inferior margins. All 

 the pereiopoda more or less fringed with intermingled spines and setse ; 

 fourth pair the longest ; third and fourth pairs with the basa slightly dilated ; 

 fifth pan- short, with the basa dilated into large squamiform plates, which 

 are serrated on their posterior margins. Pleopoda terminating subequally, 

 their bases longer than the rami, and furnished with rows of short spines ; 

 posterior pair with the rami unequal, the outer branch being 3-jointed, 

 the inner simple, narrow, and acute. Telson deeply 2-cleft, the divisions 

 rounded at their extremity, and with about three short subapical spines. 



Length about -35 inch. Colour yellowish ; carapace of a thick, some- 

 what horny consistence. 



Hab. Dredged in Paterson Inlet, 7 fathoms. 



This species was first described by Mr. Haswell, who obtained it by the 

 dredge in Port Jackson ; the figure given of it in the journal quoted above 

 is, however, not very satisfactory. In the original description the only 

 points of difference between the Australian form and ours are immaterial ; 

 the flagellum of the appendage to the superior antennae being 6-jointed. 

 The species is quite distinct from any other described, its nearest ally being 

 the European F. holbdlli, Kroyer, from which it differs in several respects. 

 ' Genus Polycheria, W. A. Haswell. 

 (Linn. Soc. N.S.W. Proc, vol. iv., p. 345). 



" Pereion broad; pleon compressed, more or less carinate. Antennae 

 subequal ; superior pair without an appendage. Mandibles without an 

 appendage. Maxillipedes with well-developed squamiform process. Gnath- 

 opoda small, subchelate. Pereiopoda all prehensile, with narrow basa. 

 Posterior pleopoda biramous with equal rami. Telson double." 



Before Mr. Haswell's description was published, I had obtained a species 

 of this genus, and by a remarkable coincidence drew out a generic descrip- 

 tion, giving it the name Pohjchelia, from its many claws. Mr. Haswell 

 says of this very distinct genus, '^ genus incertce sedis." In the present con- 

 fused arrangement of the genera of the sub-class Gammarides, it is certainly 

 most difficult to assign it a correct position. It appears to me, however, to 

 be most near Dexamine. 



1. P. obtusa, n. sp. 



PI. XVII., fig. 3. 



Body tumid, not compressed. Eyes large and prominent. Superior 

 antennae about two-thirds as long as the body ; first joint of peduncle short 

 and stout, second slender and twice as long, third not distinguishable from 



22 



