Bulimus. MOLLUSC A. PULMONIFERA. 263 



4. H. striata. — Conical, depressed, subcarinated, obliquely striated, a 

 rising band around tbe edge, crossed by arched striae ; columella solid, aper- 

 ture subtriangular. — Soioer. Min. Conch, t. clxxi. f. 1. — Carboniferous Lime- 

 stone, Derbyshire. 



5. H. cirriformis. — Conical, acute, umbilicate, decussato-striated ; with a 

 band around the middle of the whorl, crossed with arched striae ; aperture 



nearly round Sower. Min. Conch, t. clxxi. f. 2 — In Carboniferous Limestone, 



Derbyshire. 



6. H. Iwvis. — Whorls three ; surface smooth ; spire elevated. — Mantell, 

 Geol, Suss. 263. t. xviii. f. 19, 20.— In Plastic Clay, Bath. 



7. H. pusilla. — Depressed, smooth, umbilicated, convex beneath. Volu- 

 tions round and tapering \ their number about three. Mouth roundish 



Mart. Pet. Derb. t. lii. f. 3 In a fossil pericarp, in Clay Ironstone, Derby- 

 shire. 



Gen. XIX. BULIMUS.— Aperture of the shell longer than 

 broad, the margin near the pillar entire. 



~" 80. B. acutus. — Whorls nine, rounded, white, with trans- 

 verse interrupted brown stripes. 



Buccinum exiguum fasciatum et radiatum, List. Conch, t. xix. f. 14. — 

 Helix acuta, Mull. Verm. ii. 100. — Turbo fasciatus, Penn. Brit. Zool. 



iv. 131. Mont. Test. Brit. 34G — Bui. acutus, Drop. Moll. 77 On 



dry banks near the sea. 



Length fths of an inch ; whorls strongly wrinkled across, sometimes a 

 single or double longitudinal brown band on the lower side of the body -whorl. 

 Margin of the mouth a little reflected on the small pillar-cavity. — Animal 

 pale yellow. 



- 81. B. obscurus. — Shell brown, oblong, subcylindrical in the 



middle, with a blunt spire ; outer-lip of the mouth nearly 



straight. 



Buccinum rupium majusculum circiter senis orbibus circumvolutum, 



List. An. Ang. 122 — Helix obscura, Mull. Verm. ii. 103 Turbo sex 



anfractibus striatis apertura subrotunda marginata, Walk. Test. Min. 

 Rar. t. ii.;f. 41. Mont. Test. Brit. 391 .— B. obs. Drap. Moll. 74.— Moist 

 woods and rocks. 



Length fths of an inch ; breadth about one-third of its length : whorls 

 from five to seven, with faint lines of growth, slightly rounded, ending in a 

 blunt knob ; pillar-lip nearly perpendicular, a little reflected on the pillar- 

 cavity ; peristome white. 



— 82. B. Lackhamensis. — Shell brown, oblong, subcylindrical 

 in the middle, with a blunt spire ; outer- lip rounded. 



Helix Lack. Mont. Test. Brit. 394.— Bui. montanus, Drap. Moll. 74.— 

 In woods, England. 



Length fths of an inch ; breadth one-fourth of the length. Similar in 

 other respects to the B. obscurus except size, the lines of growth stronger, and 

 the outer edge of the mouth a little more rounded. Judging from an au- 

 thentic specimen sent to me by the late Mr Montagu, it seems to be only a 

 large variety of the preceding species. 



~* 83. B. lubricus. — Shell glossy, horn-coloured, bluntly taper- 

 ing; mouth, externally, narrow. 



