Thomson. — On New Zealand Crustacea. 259 



Art. XXXI. — Notes on, and recent Additions to, the Neio 

 Zealand Crustacean Fauna. 



By Geo. M. Thomson, F.L.S. 



[Read before the Otago Institute, StJi November, 1887.] 



Plates XIII. and XIV. 



The notes in this paper serve partly to extend the range of 

 many species hitherto recorded from only one or two localities 

 in the colony ; partly to call attention to descriptions of species 

 new to our lists, but which have been described in foreign 

 publications since the issue of the " critical list "'■'■ drawn up by 

 Mr. G. Ghilton and myself ; and also to describe some new 

 species. During the last four or five years a number of new 

 forms of Aniphipoda have been obtained ; but, as the Eev. T. 

 E. E. Stebbing, in his monograph of the "Challenger" Am- 

 jjhijpoda, is revising all our hitherto-described species, I have 

 thought it advisable to refrain from publishing any further ad- 

 ditions to that group until his report has appeared. 



In the following notes the numbers prefixed to most of the 

 species are those of the " critical list " referred to. 



Sub-order. Mackouea. 



Hippolijte stcwarti, n. sp. Plate XIII. , fig. 1. 



In the " Histoire Naturelle des Crustaces " (vol. ii., p. 377) 

 M. Milne-Edwards describes a species of Hippohjte under the 

 name of H. spinifrons, adding as its locality, " habit e Ics cntes 

 de la Nouvellc-Zclande." Mr. Miers, in his " Catalogue of New 

 Zealand Crustacea" (p. 80), quotes M. -Edwards's description, 

 addmg, " I have seen no specimens of this species." I have 

 not met with any specimens either. But among the few 

 shrimps obtained by the dredge in Paterson Inlet, Stewart 

 Island, I obtained a very distinct species of this genus, with a 

 characteristic rostrum, of which the following is a descrip- 

 tion : — 



Eostrum springing about the middle of the carapace, and 

 reaching considerably beyond the peduncle of the inner antennce, 

 icith 6 acute teeth on its upper and 2 on its lower margin, which 

 latter is greatly produced downwards in front of the orbit of 

 the eye. The margin of the carapace under the orbit is fur- 

 nished with 2 teeth, the lower and outer of which is most 

 developed. The lower slender flagella of the internal antennae 

 are about as long as the carapace ; the upper are much shorter. 

 The scale of the external antenna reaches considerably beyond 

 the extremity of the rostrum ; (the flagella are missing in my 



* " Trans. N.Z. Inst.," vol. xviii., p. 141. 

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