BOTIIRIEMBRYON. 11 



Alt. 16.5, diam. 9.4, longest axis of aperture 9.5 mill. 



Alt. 17.5, diam. 10, longest axis of aperture 9.7 mill. 



Western Australia (Hedley); King George Sound (Cox). 



Allied to B. kingii, hut the spire is much shorter, and the aper- 

 ture larger. The granulation on the upper portion of the last whorl 

 varies from distinct to ill-defined. B. physoides, as figured by Reeve 

 and Smith, has a different contour, but I have not been able to 

 compare specimens. 



B. GRATWICKI (Cox). PI. 2, figs. 31, 32; pi. 45, figs. 2, 3, 4. 



Shell perforate, oblong tttrreted, rather solid, pure white throughout. 

 Surface lusterless, very strongly and irregularly wrinkled and plicate 

 in the direction of growth lines, the wrinkles everywhere cut by 

 spiral grooves info rounded grains, which are somewhat scale-like 

 where the wrinkles are crowded or small. Spire long, the apex ob- 

 tuse ; nepionic whorls 2, densely and finely wrinkled, the wrinkles 

 irregularly waved and anastomosing. Whorls 6^, convex, the last 

 tapering below. 



Aperture slightly oblique, small, narrowly ovate, acute above and 

 somewhat narrowed below, white within; outer lip simple; colu- 

 mella broadly dilated above ; parietal callus white, thick or mod- 

 erate. 



Alt. 24.7, diam. 10.7, longest axis of aperture 10.7 mill. 



Alt. 24, diam. 10.4, longest axis of aperture 12 mill. 



Western Australia : 50 miles east from Israelite Bay, very abun- 

 dant (Cox). 



Bnli minus (Liparus} gratwiclci Cox, Proc. Linn. Soc. N. S. 

 Wales xxv. p. 435, figs. 1-3 (Dec. 9, 1899). 



Compared with B. brazieri (Angas), this form differs in the 

 greater elongation and solidity, absence of color and stronger sculpture. 

 Whether intermediate forms occur remains to be seen ; but mean- 

 time this seems to deserve recognition. The specimens were sent me 

 for illustration by my liberal friend Dr. J. C. Cox, who has pub- 

 lished an excellent account of the species. It was found at the 

 locality stated above, about two miles from the edge of the cliffs, 

 which there rise about 200 feet above the sea. Dr. Cox's type 

 (pi. 45, figs. 2-4) measures 30 mill, in length, 10 in diameter. 



B. ONSLOWI (Cox). PI. 3, figs. 43, 44, 48. 



Shell perforate, broadly ovate, rather solid, somewhat shining, 



