Mr. E. J. Miers on new Species of Crustacea. 220 



dages and the abdomen truncate at the extremity, with a 

 median terminal spine. Ci/clura 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 Splueroma armata^ JM.- 

 Edw., and 8. spinigera of Dana, specimens of which, from Xew 

 Zealand, are in the collection of the British Museum. 



Cyrtwdocea 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 penidtimate 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 coiivexa^ n. sp. Type, B.M. 



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

 Head larger. Seventli 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 C. granulata^ witli 

 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. tuhercidosa of Stebbing, from Australia, differs from 

 the two foregoing species in the tuberculated segments of the 

 pereion. 



