182 CADULUS-GADILA. 



Type measures : length of shell, 12'0 ; max. diam., 2'0 ; min. diam., 

 0-7 mill. 



Near Victoria, Vancouver Island, in 60 fms., with C. hepburni 

 (Nat. Hist. Soc. Brit. Columbia). 



Cadulus tolmiei DALL, Nat. Hist. Soc. Brit. Columbia, Bull. No. 2 > 

 p. 13, pi. l,f. 8 (1897). 



" This species is markedly different, both in arcuation and the in- 

 flation of the anterior part, from either C. aberrans or C. hepburni. 

 I have named it in honor of the late Dr. William Tolmie, of Vic- 

 toria, sometime officer of the Hudson Bay Co., who for many year* 

 contributed valuable material to the students of the ethnology and 

 natural history of British Columbia, both in America and England. '* 

 (Dall). 



C. tolmiei is smaller and less inflated than C. californicus Pils. & 

 Sharp, and the equator is less distinct. It is very similar to C. 

 rushii from the Hatteras region in the Atlantic, but that is more 

 attenuated posteriorly. With the type a specimen occurred differ- 

 ing in several respects, and probably at least varietally distinct. 



C. (tolmiei var. ?) NEWCOMBEI P. & S., n. var. PJ. 34, figs. 1 , 2. 



About the length of tolmiei, but decidedly more slender, greatest 

 diameter contained nearly 6 times in length, section of the tube 

 markedly oval, compressed vertically throughout; aperture ovaL 

 Length ll'O; antero-posterior diam. at aperture 1 '45, at greatest 

 bulging, 1-66, at apex 0'66 mill. ; lateral diam. at aperture 1*55, at 

 largest T9, at apex 0'75 mill. 



Indo-Pacific and Australian Species. 

 C. SIMILLIMUS Watson. PI. 26, fig. 77. 



Shell very like Cadulus gracilis Jeffn, rather broad, narrowed at 

 both ends, very slightly and symmetrically bent, but a little more 

 towards the mouth, with a very slight bulge, which just shows on 

 the concave curve. It is thin, polished, translucent (weathering 

 opaque), with an opaque ring near the apex. Sculpture : Very 

 minute and faint and superficial oblique striae, with a faint floccu- 

 lence in the substance of the shell. Mouth rather large, oblique * 

 edge thin, but rounded ; apical opening small, thin, and chipped. 

 Length 0'16 inch, breadth at mouth O02, greatest O036, at apex 

 0-014 inch. (Watson). 



Raine Island, Cape York, N.E. Australia, 155 fms. (Challenger). 



