No, 2. — Journal of Academy of Natural Sciences, vol. i., p. 15 

 et seqq. anno May 1817. 



SucciNEA OVALIS. — Shell suboval, pale yellowish, diaphanous, 

 very thin and fragile, with nearly three oblique volutions. Body 

 very large ; spire small, but little prominent, somewhat obtuse. 

 Aperture longitudinally subovate, large. Columella much nar- 

 rowed, so as almost to permit the view of the interior apex, from 

 the base of the shell. Scarcely any calcareous deposit on the pillar 

 lip. Length nine-twentieths of an inch, aperture seven-twentieths. 



Inhabits marshy grounds in shaded situations j common. Col- 

 lection of the Academy. 



Animal longer than its shell, furnished with four tentacula, the 

 two superior ones longer, cylindrical, supporting the eyes ; inferior 

 ones short, conic. Color pale, with minute black points, which 

 are assembled into fascia on the sides and fillets on the neck above ; 

 neck granulate above, a black line passes each side on the neck, 

 from the tip of the oculiferous tentacula, gradually disappearing 

 under the shell. Front truncate, quadrate. 



When the animal is living, so vitreous is the shell that all the 

 markings of its body are plainly discernible ; so that although the 

 shell is of a straw color, immaculate, it appears of a dusky hue, 

 with a remarkable white, flexuous, longitudinal vitta on the back, 

 arising from the suture and terminated about midway to the base, 

 often with two or three obsolete white spots near its tip. The 

 characters of the inhabitant are widely distinct from the animal of 

 the Lymngea, and are somewhat allied to those of the inhabitants 

 of the Helices ; it cannot, however, be referred to Helix with 

 propriety, as will be evident from the specific description. I have 

 for the present considered it as of Draparnaud's genus Succinea, 

 though it somewhat resembles a Bulimus, particularly in its habi- 

 tat, being a terrestrial species, and in this respect it difi'ers from 

 Succinea. It may perhaps belong to Lamark's genus Amphibu- 

 limus. 



Helix hirsuta. — Shell subglobose, brownish, imperforated, 

 covered with short, numerous, rigid hairs ; whorls five, but little 

 rounded ; suture distinct ; aperture very narrow, almost closed by 

 an elongated lamelliform tooth, situated on the pillar lip, and cir- 



