468 M0LLUSCA OF MAST HEAD REEF, QUEENSLAND, I., 



CEPHALOPODA. 



Sepia esculenta Hoyle. 



Sepia esculenta Hoyle, Chall. Rep. xvi. 1886, p. 129, pl.xviii. figs. 

 1-5, pl.xviii. figs. 1-6. 

 Several large shells gathered on the beach answer to the 

 description of this Japanese species, which has not previously 

 been seen beyond the Japanese Empire. 



Sepia cultrata Steenstrup. 

 S. cultrata Steenstrup, Hoyle, op. cit. p. 133, pl.xx. 



Numerous shells were strewn among the beach drift. This 

 species had not been noted so far north. 



Sepia pfefferi Hoyle. 

 S. pfefferi Hoyle, op. cit. p. 145, pl.i. fig. 10. 



Shells of this species occurred with the foregoing, but the 

 species seemed rare. Hitherto it has only been known from the 

 Arafura Sea. 



PELECYPODA. 



Glycymeris capricornea, n.sp. 

 (Plate xxxvi., figs.5-6.; 

 Shell small, solid, almost equilateral, the posterior side slightly 

 exceeding the anterior, the orbicular outline only modified by the 

 short hinge-line and a straight margin of the dorsal posterior. 

 Colour white, variegated with irregular brown concentric streaks. 

 Sculpture: about thirty-five strong sharp radial ribs which denti- 

 culate the margin, are wider apart and larger medially and shrink 

 fainter and closer as they recede to the sides. The crests of the 

 ribs are minutely beaded, and fine crossbars lattice the inter- 

 stitial grooves. Epidermis disposed in separate, erect, falcate 

 bristles set in a double row down each groove. Beaks full and 

 projecting, approximating. Ligamental area short and narrow. 

 Teeth about twenty-four, composing an arch with rather straight 

 limbs. Interior porcellaneous-white, sometimes stained with 



