Chilton. — Some Neiv Zealand Amphijjoda. 7 



Akaroa and Lyttelton obtained years ago, and provisionally labelled as an 

 undescribed species of Eurystheus. Stebbing in 1899 placed the species 

 under Wyvillea, a genus of doubtful validity, and retained it in the same 

 position in 1906. The species is, however, quite evidently a Eurystheus, 

 and comes near to E. dentifer (Haswell) ; the third side plate in the male 

 is produced anteriorly below that of the second gnathopod in the same way 

 as described for Paranaenia typica Chilton (1884, p. 259), a species which 

 Stebbing considers a synonym of Eurystheus dentifer (Haswell). 



In addition to the Bay of Islands specimens I have others of E. haswelli 

 from Lyttelton ; Akaroa ; Longbeach, near Otago Harbour ; Stewart 

 Island ; Chatham Islands ; and also one from Port Jackson, New South 

 Wales, sent to me in 1918 by Professor W. A. Haswell. 



Eurystheus crassipes (Haswell). 



Maera crassipes Haswell, 1880, p. 103, pi. 7, fig. '2. Eurystheus 

 crassipes Stebbing, 1906, p. 612. 

 I have specimens from Wellington and Auckland Harbours that evi- 

 dently belong to this' species, which was described from Port Jackson and 

 Jervis Bay in Australia by Haswell ; it is well characterized by the large 

 size and breadth of the fourth peraeopod, and has rightly been placed in 

 Eurystheus b}^ Stebbing. The species has not hitherto been recorded from 

 New Zealand. 



Eurystheus chiltoni (G. M. Thomson). 



Maera chiUoni G. M. Thomson, 1897, p. 447, pi. 10, figs. 1-5. Eurys- 

 theus chiltoni Stebbing, 1906, p. 617. Eurystheus longicornis 

 Walker, 1907, p. 35, pi. 12, fig. 21. 

 This species was described by Mr. Thomson from specimens dredged 

 in the Bay of Islands. I have a specimen from Mokohinou, found by 

 Mx. C. R. Gow on seaweed at a depth of 25 fathoms. I think there is no 

 doubt that E. longicornis (Walker) is the same species ; the descriptions 

 agree generally, and the drawing given by Walker of the second gnathopod 

 of the male agrees well with my specimen from Mokohinou and also with 

 co-types of Mr. Thomson's species which I have been able to examine. 

 Walker's specimens were collected at the winter cpiarters of the " Discovery " 

 in McMurdo Strait during the National Antarctic Expedition, 1901-4. 



Eurystheus dentatus (Chevreux). 

 Gammaropsis dentata Chevreux. 1900, p. 93, pi. 12, fig. 1. Eurys- 

 theus afer Chilton, 1912, p. 510, pi. ii, figs. 30-34. 

 I have a few specimens of Eurystheus that I have had some dif&culty 

 in identifj'ing. I find, however, in the better -developed specimens that the 

 lower margin of the first side plate is distinctly dentate, as described and 

 figured by Chevreux for the species named above, and the general agree- 

 ment in other characters shows that they must be referred to that species. 

 In the New Zealand specimens, both in the male and the female, the 

 gnathopoda are more elongated and slender than those figured by Chev- 

 reux, but in others from the Kermadec Islands which seem to be otherwise 

 the same the gnathopoda are stoutei/ and like those of Chevreux' speci- 

 mens. The New Zealand specimens are certainly the same as those from 

 Gough Island collected by the " Scotia " Expedition that I referred with 

 much hesitation to E. afer Stebbing in 1912, and in two the merus of one 

 or more of the last three pairs of peraeopoda is expanded in the same way 

 ■ as it is in one of the Gough Island specimens, though not c[uite to the same 

 extent. 



