2 Di". C. Chilton on a new 



dissected and permanently mounted before it was recognized 

 that it was the only specimen taken of a new and rare genus. 

 Unfortunately pressure of other matters caused it to be laid 

 aside, and it has remained long overlooked. Consequently 

 there are many points that cannot now be satisfactorily made 

 out by an examination of the mounted specimen. I think, 

 however, that sufficient can be learnt to show that, although 

 in many respects tlie specimen closely resembles Stebbing's 

 species Plaiyischnopus mirahiUs, it differs considerably in 

 others, and that these points of difference throw some further 

 light on the affinities of the genus, and I have therefore 

 thought it worth while to place a description of the species 

 on record. 



PlatyiscJmopus neozelam'cus, sp. n. (PI. V.) 



Specific description. — The head and antennae resembling 

 in general shape those of P. mirahiUs. Second joint of 

 peduncle of upper antenna? and last two joints of the peduncle 

 of the lower with long feathered setge. Both gnathopoda 

 stouter than in P. nnrahilis, the first apparently ending 

 simply, the dactylos not impinging against the propodos; the 

 second minutely chelate, the dactylos being small and short and 

 impinging against a spine-like projection of the propodos. 

 The first and second per^eopoda with the end of the propodos 

 oblique and bearing several spine-like setfe longer than the 

 dactylos ; the carpus of the second perreopoda expanded 

 posteriorly and supplied with several long feathered setse. 

 Third uropoda with the rami longer than the peduncle, sub- 

 equal, outer one formed of two joints, both rami bearing long 

 feathered setie at the extremity. Telson double or very 

 deeply cleft, each half with a stout spine at the end and two 

 set£e at the side some distance from the end. 



Length about 4 millim. 



FJah. Otago Harbour, New Zealand. 



Detailed description. — The head^ in its peculiar shape atid 

 in the position of the antennae, closely resembles that of 

 P. mirahiUs. 



The hody is rather broad, chiefly so in the person. 



The ujqyer antenna' (IM. V. fig. a.s.) are somewhat shorter 

 than the lower ; the peduncle considerably longer than the 

 flagelhim, the first joint stout, broader than long, with two or 

 three small setai at the distal end; second joint oblong, about 

 twice as long as broad, di^tally t'urnished with four or five 

 lung feathered seta} which reach as far as the end of the 

 flagellum ; the third joint rather more than half as long as 



