312 COLLECTIONS FROM MELANESIA. 



numerous generic divisions proposed by him would doubtless require 

 considerable modification in any general systematic arrangement of 

 the group. Of the numerous Australian additions to this Order 

 described by Haswell, but few are in the collections received from 

 Dr. Coppinger. 



1. Ephippiphora kroyeri, White. 



Several small specimens from Dundas Straits, 17 fms. (No. 161), 

 one from Prince of Wales Channel, 7-9 fms., and one from Port 

 Denison, 4 fms. (No. 1-2), are referred to this species. They agree 

 with White's much larger types in the form of the body, the coxae 

 of the thoracic legs, and particularly in the great development of the 

 postero-lateral lobes of the fourth coxae, in the broadly rounded 

 basus-joints and somewhat dilated ischia of the three posterior legs, 

 and in other points. White's examples (from Tasmania) are dried, 

 and the first and second legs are now broken, as also the terminal 

 segment in both specimens. In the specimens from the ' Alert ' 

 collection the terminal segment is elongated, narrowing slightly 

 to the distal extremity, with the sides straight, and is divided by 

 a narrow median fissure ; the imperfect terminal segments in 

 White's types seem to show a similar structure : in this particular 

 they differ from L. nitens, Haswell, from Port Jackson. L. austra- 

 liensis, Haswell, has a very close resemblance to L. kroyeri, and I 

 should have considered it identical with it, were it not for the pro- 

 bable difference in the form of the terminal segment, since L. austra- 

 lensis is only distinguished by Haswell from L. nitens by the form 

 of the eyes and the palms and fingers of the second legs. 



In the present uncertainty as to the true limits of the genera of 

 this group, I refer to this species under White's original designation 

 Ephippiphora. By Boeck this genus is doubtfully considered to be 

 identical with his Socarnes, first described in 1870. 



Mr. Thomson* records the species from Dunedin, New Zealand 

 (as Lysianassa Icroyeri) ; but as he says nothing of the form of the 

 telson or terminal segment, I am not sure of the identity of his 

 specimens with the true Icroyeri. 



2. Leucothoe spinicarpa, var. commensalis. 



Gammarus spinicarpus, Abildgaard, Zool. Danica, iii. p. 66, pi. cxiv. 



figs. 1-4 (1789). 

 Cancer (Gammarus) articulosus, Montagu, Trans. Linn. Soc. vii. 



p. 70, pi. iv. fig. (1804). 

 Leucothoe articulosa, Leach, Trans. Linn. Soc. xi. p. 358 (1815), 



et. avctoram. 

 Leucothoe spinicarpa, A. Boeck, Skandinaviske og Arktiske Amphi- 



poder, p. 507, pi. xvi. fig. 5 (1870), ubi synon. 



* Trans. New-Zealand Institute, xi. p. 237 (1879). 



