228 Mr. E. J. Miers on new Species of Crustacea. 



Lironeca novcB-zealandice^ n. sp. 



Cymothoa novce-zealandm, List Crust. Brit. Mus. p. 110 (1847), sine 

 descr. 



Moderately convex. Head small, about as long as broad, 

 widest in the middle, with the sides converging to the back 

 and front, deeply encased within the first segment of the 

 pereion. The seven segments of the pereion of nearly equal 

 width, each with a faintly marked groove produced for a short 

 distance inward and obliquely forward from the lateral margin. 

 Segments of the pleon (the last excepted) very narrow ; last 

 segment transverse, surface uniformly and faintly wrinkled, 

 posterior margin with a nearly semicircular outline, entire. 

 Rami of the appendages of the penultimate segment very 

 small, outer slightly the larger. Colour dark brown. 



Length 1^ inch. 



Hab. New Zealand. 



Cirolana Rossn, n. sp. Type, B.M. 



Cirolana Rossii, List Crust. Brit. Mus. p. 106 (1847), sine descr. 



Convex, smooth. Head quadrangular, broader than long, 

 encased in the first segment of the pereion. Eyes narrow- 

 oblong, black, extending along the sides of the head from the 

 front margin of the first segment of the body nearly to the 

 bases of the antennae. Segments of the pereion smooth, the 

 first the widest. Last segment of the pleon slightly rounded 

 on the sides, obtuse at the apex. Legs hairy, the hairs more 

 dense on the four last pairs, which are not spinous. Appen- 

 dages of the penultimate segment ciliate, the outer narrower, 

 acute at the extremity. 



Length nearly 1 inch. 



Hah. New Zealand ; Auckland Islands. 



Distinguished from C. spinipes of Europe by the narrow 

 oblong eyes, and from C. hirtipes in the form of the head, 

 which is broader than long. 



ISOCLADUS, n. gen. 



Convex, somewhat widening posteriorly. Seventh segment 

 of the pereion in the male with a long median dorsal spine. 

 Terminal segment of the pleon narrowing posteriorly, and acute 

 at the extremity. Appendages of the pleon subequal, of a 

 slightly sigmoid shape, and acute at the extremity. 



A genus nearly allied to Zuzara^ Leach (Diet. Sci. Nat. xii. 

 p. 344, 1818), which differs in having unequal pleonal appen- 



