52 HELIX. 



H. ELEGANTISSIMA, Pfr. PL 11, fig. 45. 



AVidely umbilicated, thin, distantly subplicate above, diaphanous, 

 scarcely shining, yellowish, suture denticulately margined, scarcely 

 impressed ; whorls 6i, the last not descending in front, with a ciliate, 

 denticulate, acute carina; peristome white, simple, a little expanded, 

 columella short, subvertical. Diam. 24 mill. 



Loo Choo and Typinsan Is. 



Closely related to, perhaps a mere variety of the preceding species. 

 It is H. pretiosa, Albers. 



H. HOWARDI, Angas. PI. 12, figs. 96-98. 



Moderately umbilicated, rather solid, obliquely irregularly striate, 

 and slightly, very minutely granular, yellowish corneous, with two- 

 indistinct chestnut bands; whorls 4], slightly convex, the last a 

 little descending in front, base more convex, without bands, periph- 

 ery acutely carinated ; peristome white, chestnut color at the junction 

 with the body, slightly expanded. Diam. 22 mill. 



450 miles N. of Adelaide, Australia. 



H. MACKENSII, Adams and Reeve. PL 11, fig. 34. 



Widely umbilicated, thin, closely arcuately striate above, epider- 

 mis hairy on the peripheral carina, brownish corneous; whorls (>L, 

 scarcely convex above, slowly increasing, the last shortly deflected 

 in front, periphery acutely carinated, base slightly striate, turgid 

 around the umbilicus; peristome thin, somewhat expanded above, 

 shortly reflected below. Diam. 30 mill. 



Ins. Typinsan, China Sea. 



H. GERLACHI, Mollendorff. PL 11, figs. 35-37. 



Widely umbilicated, subobliquely interruptedly striulate, very 

 slightly spirally lineolate, brownish, suture superficial; whorls 6, 

 flattened, the last with hairy carina, slightly descending in front, 

 convex below and angular round the umbilicus; peristome simple, 

 a little reflected below. Diam. 19-21 mill. 



Canton, China. 



Var. GRANULOSO-STRIATA, Mart. 

 Pale. Diam. 21 mill. 



Var. ABRUPTA, Mart. 



Smaller, striae interrupted, brownish. Diam. 19 mill. 



Var. HUNANCOLA, Gredler. Undescribed. 



