ON CRUSTACEA BROUOHT BY DR WILI,EY FRf>^r TFIE SOTTTIT SEAS. G57 



of the peduncle of the uropods is narrow, its curve not sharply distinguished from 

 the line of the outer side. 



Colour, forming transverse bands of dark brown, clubbed at the ends, near the 

 hind margin of the several segments. Tlie mesepistome is also dark, and the front 

 margin of the head and the first peraeon .segment. 



Length of a male specimen, I'ii mm. by a breadth of 275. The specimen from 

 which the figures were taken was rather larger. 



Habitat. Lifu, Loyalty Islands. 



The specific name refers to the strikingly contrasted light and dark bands of 

 the dorsal colouring. 



From the head to the caudal segment the dissected specimen was practically 

 filled with the labyrinthine parasite represented on the plate, its orange coils firmly 

 embracing the intestine. 



AMPHIPODA. 

 Fam. Talitiudae. 



inOO. Talitridae, Stebbing, in 'Fauna Hawaiiensis,' p. 527. 



Talitrus being the earliest of the genera accepted in this family, it seems right 

 that the family name should be based upon it, in accordance with the example set 

 by Achille Costa, who in 1857 introduced the name Talitrini. 



Gen. Parorcuestia, Stebbing. 



LS99. Parorcliestia, Stebbing, Trans. Linn. Soc. London, vol. 7, pt. 8, p. 402. 

 1900. Parorcliestia, Stebbing, in ' Fauna Hawaiiensis,' p. 529. 



Parorchestia h.vwaiensis (Dana). 



1853. Orchestia hawaiensis, Dana, U.S. Expl. Kxp., Crustacea, p. 880, pi. 59, fig. 8, 



a—g. 



1899. Parorchestia hawaiensis, Stebbing, Trans. Linn. Soc. London, vol. 7, pt. >s, p. 



402. 



1900. Parorchestia hawaiensis, Stebbing, in 'Fauna Hawaiiensis,' p. 529, pi. 21c. 



Dr Willey's specimens, which are of the female sex, were obtained at Lifu, Loyalty 

 Islands. 



Fa.M. lillAiiDOSOMID.VE. 



1895. Rhahdosomidae, Stebbing, Trans. Zool. Soc. London, v.il. 13, pt. 10, p. 366. 



Gen. Itii Ai'.iiosdMA, .Vd.uns and White. 



lN-i7. Rhabdosoma, Adams and White, in Wliiti's List of Crustacea in the British 

 Museum, p. 138. 



1848. Mabdosovia, Adams and White, Zool. \ ..y. 11. M.S. Samarang, p. 63. 



