G. M. Thomson. — Notes on New Zealand Crustacea. 217 



appendage very short and five-jointed. Inferior antennae sparingly setose 

 on the under surface ; peduncle much longer than peduncle of superior ; 

 flagellum five-jointed, rather shorter than last joint of peduncle. Basos of 

 first gnathopoda very long, produced into a tooth on its anterior margin ; 

 meros produced iuferiorly as long as the carpus ; carpus rather longer than 

 the propodos ; propodos enlarged anteriorly, with a single small tooth on 

 its inferior margin, and covered with long hau'S, which form a bunch at the 

 articulation of the dactylos ; dactylos slender, half as long as propodos. 

 Second pair of gnathopoda not longer than succeeding pereiopoda, and very 

 hairy. Third pair of pereiopoda short ; fourth and fifth pairs much longer. 

 Pleopoda subequal ; telson quite smooth. Colour yellowish, with small 

 black spots, chiefly on the lower parts of the body and appendages. 

 Length '3 inch. 



Hab. A single specimen dredged in Otago harbour, in 4-5 fathoms. 



The species was described originally from Chile (Valparaiso), but the 

 description given in the Brit. Mus. Cat., p. 161, is meagre, and has accord- 

 ingly been amplified. 



Genus Microdentopus, Costa. 

 (Brit. Mus. Cat. Amphip, Crust, p. 163.) 

 Body long and slender. Superior pair of antennse longer than the in- 

 ferior, and carrying a secondary appendage. Mandibles furnished with an 

 appendage. Gnathopoda subchelate, first pan- larger than the second. 

 Third pah' of pereiopoda not longer than the two preceding ; fourth pair 

 much, and fifth pair very much longer than the others. Posterior pair of 

 pleopoda biramous. Telson tubular, conical, and tipped with a double ver- 

 tical apex. 



1. M. maciilatus, G. M. Thomson (Ann. & Mag. N. H. ser. V., vol. IV., p. 831). 



Pig. 7a., b. & c. 



Animal smooth, slender. Coxge rather small. Superior antennae con- 

 siderably longer than inferior, two-thirds as long as body; second joint of 

 peduncle long and slender ; thu'd short and furnished with a 5-6-jointed 

 appendage ; flagellum very slender, multi-articulate, sparingly ciliated. 

 Inferior antennae strong, subpediform, with a stout olfactory denticle, and 

 furnished with numeroiis cilia ; third joint of peduncle short, fourth and 

 fifth very long ; flagellum short, indistinctly 6-7 -jointed. 



Mandibular appendage (fig. 7b.) 2-jointed. Maxillipeds with strongly- 

 toothed appendages. Gnathopoda moderate, covered with strong cilia ; 

 first pair rather the largest, carpus rounded on its inferior margin ; propo- 

 dos oblong, with a very oblique, curved palm, defined by a strong spine ; 

 dactylos strong and curved, finely toothed on the inner margin ; second 



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