476 ON SOME NEW AUSTRALIAN MARINE ISOPODA, 



Calyptura carnea, gen. et sp. nov., Plate XVII., fig. 4. 



Moderately convex, granulated. Head of moderate size, rather 

 broader than long, eyes oval, received into a notch in the anterior 

 border of the first segment of the thorax. First segment of the 

 thorax broader than the succeeding five ; lateral angles blunt. 

 Last segment of the thorax produced into a broad shield extend- 

 ing beyond and concealing the abdomen, narrowing behind to a 

 blunt apex, convex anteriorly, nearly flat in its posterior half, 

 but with a slight median longitudinal ridge. Abdomen short, 

 bisegmented, concealed by the last thoracic segment ; last segment 

 with a quadrangular median posterior notch, in the centre of which 

 is a squarish lobe. Caudal appendages extending slightly beyond 

 the extremity of the last thoracic segment ; rami subequal, ciliated 

 on the edges, the inner the longer, truncate, with an angular 

 tooth on its inner border ; outer ovate, pointed, the extremity 

 slightly curved outwards. Inner antennae broad at the base, 

 separated by a small frontal lobe, flagellum of eleven or twelve 

 articuli. Outer antennae longer than the inner, flagellum of 

 fourteen or fifteen articuli. Colour crimson. Length ^ inch. 



S'ah, Port Jackson ; common. 



Genus Haliophasma (novum J. 



Body sub-cylindrical, depressed, thoracic segments sub-equal. 

 Inner antennae much shorter than the outer, with multi-articulate 

 flagellum. Mandibles with a palp. Maxillipedes small, sub- 

 operculif orm. First pair of thoracic limbs large, sub-chelate, the 

 rest simple or the second imperfectly subchelate. Last pair of 

 abdominal aj^pendages broad, operculiform, biramous — the inner 

 ramus biartioulate, the outer scale-like. Terminal segment 

 squamiform. 



Differs from Paranthura in the possession of well-developed 

 flagella in both pairs of antennae or the outer pair only, and in the 

 form of the second and third pairs of pereiopoda. 



