Mr. E. J. Miers on new Species of Crustacea. 229 



dages and the abdomen truncate at the extremity, with a 

 median terminal spine. Cijclura of Stebbing (Journ. Linn. 

 Soc. xii. p. 146, 1874) has the appendages of the pleon broad, 

 unequal, and rounded at the extremity. 



The genus Isocladus includes the Sphceroma armata, M.- 

 Edw., and S. spinigera of Dana, specimens of which, from New 

 Zealand, are in the collection of the British Museum. 



Cymodocea granulata^ n. sp. Type, B.M. 



Moderately convex, nearly smooth. Head small ; frontal 

 lobe very small, obtuse. Lateral margins of the segments of 

 the pereion all with a narrow marginal line, with the postero- 

 lateral angles acute. Antero -lateral lobe of the first segment 

 of the pereion narrow triangular, acute, produced forward 

 beneath and beyond the eyes. Postero-lateral lobe of the last 

 segment of the pereion produced backward, and terminating 

 in a short spine curving upward ; posterior margin of the seg- 

 ment nearly straight. Last segment of the pleon broad, con- 

 vex, granulous, and slightly hairy, with a more distinctly 

 granulated elevation on its upper surface near its base, and 

 with the terminal notch quadrangular, with a narrow median 

 lobe. Rami of appendages of the penultimate segment un- 

 equal, the inner not quite reaching to the extremity of the 

 segment ; broad truncate at the end, the outer nearly as long 

 again and narrowing to its extremity, which is acute. 



Hah. New Zealand ; Tasmania ; Flinders Island. 



Cymodocea convexa^ n. sp. Type, B.M. 



More convex than C. granulata, and not so narrow in front. 

 Head larger. Seventh segment of the pereion without a 

 postero-lateral lobe or spine on each side. Terminal segment 

 of the pleon very large, more convex in its anterior half, which 

 has usually four obscure tubercles in a transverse series ; pos- 

 terior notch wider, and not so deep as in G. granulata, with 

 the median lobe triangular. Appendages of the penultimate 

 segment not reaching nearly to the posterior emargination ; 

 rami subequal, obtuse at the extremity. 



Length nearly ^ inch. 



Hah. New Zealand. 



The C. tuberculosa of Stebbing, from Australia, differs from 

 the two foregoing species in the tuberculated segments of the 

 pereion. 



