200 ATTSTEALIAN MALA.COSTRACA. 



curved upwards ; posterior margin of the segment nearly straight. 

 Last segment of the abdomen broad, convex, granulous and 

 slightly hairy, with a slight, more distinctly granulous elevation 

 on its upper surface near the base, emargination quadrangular 

 with the median lobe narrow. Rami of caudal appendages 

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

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

 again, narrowing to the extremity which is acute. Upper 

 antenna? much enlarged at base, the second joint received into 

 an emargination of the first joint. Length about \ in. [M.~\ 



Flinders' Island; also Tasmania. Pound also in New Zealand. 



500. Cymodocea (?) Gaimardii. 



Sphceroma Gaimardii, Milne-Edwards, Hist. Nat. Crust., t. iii., 

 p. 200. 



Body smooth. Head extremely convex and recurved down- 

 wards. Marginal crest of the front scarcely distinct. Last 

 segment of the abdomen regularly convex, and terminated by 

 three teeth nearly of the same thickness and reaching the same 

 transverse plane. Rami of the caudal appendages obtuse, with 

 the borders smooth, very short (not nearly reaching as far as 

 the posterior extremity of the body.) Length about an inch. 



Australia. 



Three specimens marked "Tasmania, Dr. Gr. F. Storey," in the 

 collection of the Australian Museum, may belong to this species, 

 which differs from the ordinary examples of Cymodocea in having 

 the terminal abdominal segment smooth. The mesial tooth which 

 is broad and obtuse projects decidedly beyond the angles of the 

 notch (lateral teeth in Milne-Edwards' description). 



501. Cyniodocea pubescens. A.M. 



Spliceroma pubescens, M.-Edw., Hist. Nat. Crust., t. iii., p. 200. 



Ci/modocea pubescens, Haswell, Proc. Linn. Soc. N.S.W., 

 Vol. v., p. 173, pi. xvii., fig. 1 (1881). 



Strongly convex, tomentose. Frontal lobe obtuse. Antero- 

 lateral angle of the first thoracic segment produced below the eye 

 into a triangular acute lobe; postero-lateral angle similiarly 

 produced, rounded. Lateral angles of the following segments of 



