OF NEW SOUTH WALES. 59 



15, — Dentalium L-EVE, n. sp. 



Shell light amber colour, sometimes white, smooth, glossy, 

 strongly arched, half-moon shaped, basal margin pinched in about 

 two lines long, forming somewhat like a shoulder, then slightly 

 ventricose, from that to the apex regularly tapering, apex with a 

 minute perforation, entire. 



Length, 14 lines; diam. of base at shoulder, 1; below, ^ line. 



Hub. Princess Charlotte Bay, North-East Australia, 13 fathoms, 

 sandy mud ; Cape Grenville, North-East Australia, 20 fathoms, 

 mud; York Island, Torres Straits, 13 fathoms, hard mud bottom ; 

 Darnley Island, Torres Straits, 5, 15, 20, 30 fathoms, mud, sand, 

 and sandy mud bottom. 



The lower part of this species resembles the spines of the Sea- 

 urchins " Echinidce." The greater part of the specimens are 

 encrusted over with a fine coating of coral-like substance. 



16. — DENTALIUM LONGITRORSUM. 



Bentalium longitrorsum, Reeve, Proc. Zool. Soc, London, 1842, 



p. 197. 



„ „ Sowerby, Thes. Conch., vol. 3, pi. 223, 



fig. 59, 60. 



Hal). Darnley Island, Torres Straits, 30 fathoms sandy mud. 



This elongated species is sometimes pure white, as well as 



bright amber colour, with a very slight dorsal fissure. Specimens 



32 lines long. 



Family TECTURIDtE. 



17. — scutellina crenulata. 



Scutella crenulata, Broadrip, Proc. Zool. Soc, London, 1834, 



p. 48. 



Hab. Bet Island, Torres Straits. Found on the beaches after 



a gale. 



Family PATELLID^]. 



18. — Patella saccharina. 



Patella saccharina, Linn. Syst. (12th ed.), p. 1258. 



„ „ Lam. Anim. Sans, Vert., tome 6, second 



part, p. 326. 



„ „ Reeve, Conch. Icon., pi. 28, sp. 72. 



Adrohpas „ D'Argenville, Conch., text 2, fig. m. 



