MALACOZOA. GASTEUOPODA. rULMOUUANCHIATA. 90 



Helix obscura. Mullen Verm. Terrestr. et Aquat. ii. 103. — 

 Helix obscura. Mont. Test. Brit. 391. PI. 22. f. 5.— Buliiuus 

 obscurus. Drap. Moll. 74. PI. 4. f. 23. — Bulimus obscurus. 

 Gray's Turton. 183. — Bulimus hordeaceus. Lamk. Syst. Ed. 2. 

 viii.'236. — Bulimus obscurus. Flem. Brit. Anim. 265. 



Genus 7. Pupa. Chrysalis-Snail. 



Animal with tlie body elongated, spiral ; tlie head 

 with four tentacula, of which the upper are long, the 

 lower short, all clavate ; the foot small, elongated. 



Shell oblongo-cyhndrical, spirate, thin, with the apex 

 obtuse, the last whorl not proportionally much larger ; 

 the mouth semioval, with the peristome incomplete, 

 thickened, and reflexed. 



The Pupae, so named from their fancied resemblance 

 to chrysalids, dolls or puppets, are similar in their habits 

 to the Bulimi : they feed on vegetable substances, reside 

 among moss or herbage, or under stones ; remain inert 

 in continued drought ; and search for food at night, or 

 when the grass is moist. 



1. Pupa umhilicdta. Uinhilicated ChrysaUs-Snail. 



Shell oblongo-cylindrical, glossy, with six moderately con- 

 vex turns, which are transversely striated and distinctly se- 

 parated by the suture ; the aperture semiovate, subangulate, 

 with the peristome thick, reflexed, and flattened; a single 

 laminar tooth in the angle formed by the junction of the outer 

 lip ; the vimbilicus narrow ; the colour dark-olive, the peri- 

 stome pale yellowish-grey, or tinged with reddish. Length 

 two-twelfths of an inch, breadth about half the length. 



The animal has the foot oblongo-elliptical, greyish-white : 

 the neck and tentacula blackish-grey, the eyes black. It 

 moves slowly, bearing the shell at an angle of about 15 degrees. 



Very common, among moss, under stones, in the fissures 

 of walls, along the coast, and in the interior, in dry and moist, 

 sunny and shaded places. 



Turbo muscorum. Mont. Test. Brit. 335. PI. 22. f. 3.— Pupa 

 umbilicata. Drap. Moll. Terr, et Fluv. 62. PI. 3. f. 31), 40.— Pupa 

 umbilicata. Lamk. Syst. Ed. n. viii. 179. — Pupa xnnbilicata. 

 Gray's Turton, 193. — Pupa muscorum. Flem. Brit. Anim. 268. 



2. Pupa margindta. Margined ChrysaUs'Snail. 

 Shell oblongo-cyhndrical, slightly glossy, with six little-con- 



