190 ON SOME NEW AUSTBALIAN MAKINE ISOPODA, 



process. First abdominal segment short, with the divisional lines 

 distinct ; its posterior border with a wide shallow excavation 

 bounded on either side by a rounded tooth with an obscure 

 denticle internal to it. Last abdominal segment granular and 

 hairy, with a low elevation about its middle. Posterior notch 

 deep, its angles produced and acute, a little more prominent than 

 the mesial lobe which is conical and acute. Outer ramus of 

 uropoda longer than the inner, ovate-lanceolate, acute, inner 

 extending beyond the extremity of the abdomen, acuminate. 

 Colour uniform bight red. Length 7/16ths inch. 



Sab. Griffiths' Point, Victoria. 



Cymodocea coronata, sp. nov. 



Head and thorax as in C. bidentata, but with the hairs shorter. 

 Abdomen rather depressed, covered with short hairs, ornamented 

 with six small pointed tubercles arranged in a circle — two near 

 the posterior border of the first segment, the rest on the second. 

 Terminal notch very wide — nearly a third of the breadth of the 

 abdomen : mesial lobe very large, dilated at its base, but narrowing 

 towards its apex which is blunt. Mobile ramus of uropoda much 

 shorter than the immoble ramus, sub-falciform, truncate. Inner 

 ramus very long, extending far beyond the extremity of the 

 abdomen, long-ovate, apex rounded. Length \ inch. 



Sab. Griffiths' Point, Victoria. 



An ally of C. aculeata, mihi, but distinguished, besides other 

 points, by the greater relative shortness of the mesial lobe and 

 the smallness of the mobile ramus of the uropoda. 



Cymodoeea tuberculata, sp. nov., Plate III., fig. 8. 



Greatest breadth exactly half the total length. Head and first 

 segment of body smooth — the latter equalling in length the three 

 following segments together. Last six segments of the thorax 

 each ornamented with a regularly arranged row of tubercles — 

 their epimeral portion clothed with a long pubescence. First 



