GASTEROPODA PULMONEA. 
35 
tlie shell; for at a partictilar epoch, of all the whorls of the spin' 
originally possessed by this Buliinus, not a single one remains*. 
Pupa, Lam. 
Have the summit of the shell very obtuse ; the last whorl, in the 
adult, becoming again narrower than the others, giving it the form of 
an ellipsoid, or sometimes almost that of a cylinder; the surroimding 
margin of the apertute tumid and emarginated on the side next to 
the spire by the preceding whorl. Small species, inhabiting wet 
places, among mosses, &c. 
Sometimes there is no dentation f. 
More commonly there is one in that portion of the aperture 
which is closed by the penultimate whorl J. 
It is frequently observed inside of the external edge||. 
CuoNDRUs, Cuv. 
Have the aperture, as in the last mentioned Pup;ie, indented on the 
side next to the spine by the preceding whorl, and bordered Avith 
salient laminse or teeth ; but the form is more ovoid, like that of a 
common Bidimus. 
Some of them have teeth on the margin of the aperture §. 
Others arc furnished with more deeply seated laminse^. 
Here terminates that series of terrestrial Helices, the adult shells of 
which haA'e a tumid margin round the aperture. 
SucciNEA, Drop. 
Have the shell oval, and the aperture higher than it is broad, as in 
Buliinus, but larger in proportion, and the margin of the aperture 
* Add Helix ovalis, Gm., Cliemn., IX. cxix, 1020, 1021 ; — H. oblonga, Ib., 
1022, 1023 ; — H. trifasciala, Id., CXXXIV, 1215 ; — H. dextra, Ib., 1210, 1212; — 
H. interrupta, Ib., 1213,1214; — H., Ib., 1215; — H., Ib., 1224, 1225 ; — /f. per- 
versa, Id., CX and CXI, 928 — 937 ; H. inversa, Ib., 925, 926 ; — H. contraria, Id., 
CXI, 938, 939; — H. lava, Ib., 940 and 949; — H. labiosa, Id., CXXXIV, 1234 ; — 
H., Ib., 1232; — H., Ib., 1231 ; H. cretacea, Id., CXXXVI, 1263; — H. pudica, Id., 
CXXI, 1042 ;— 17. calcirea, Id., CXXXV, 1226. 
Bulla auris Malcha, L., Gm., Ib., 1037, 1038, V, Ib., 1041. 
Buliinus columba, Brug., Seb., Ill, Ixxi, 61 ; — Bui. fasciolafus, Oliv., Voy., pi. 
xvii, f. 5. Fertile small species of France, see Draparnaud, Moll. terr. etfluviat., 
pi. iv, f. 21 — 32. 
-f- Bidimus labrosus, Oliv., Voy. pi. xxxi, f. 10, A, B ; — Pupa edeniulu, Drap. Ill, 
28, 29 ; — Pupa obfusa, Id., 43, 44 ; — Bui. fusus, Brug. 
X Turbo uva, L., Martini, IV, cliii, 1439 ; — Turbo muscoruni, L. {Papa marejinata, 
Drap., Ill, 36, 37, 38) ; — Pupa muscorum, Drap., III. £5, 27. {Vertigo cylindrica, 
F7‘russ. ); — Pupa umbilicafa, Drap. Ill; 39, 40 ; — P. doliolum, Ib., 41, 42. 
II Hel. vertigo, Gm., {Pupa vertigo, Drap., Ill, 34, 35) ; — Pupa antivertigo, Ib., 
32, 33 ; — Pupa pygmoea, lb., 30, 31 ; — Bulinius ovularis, Oliv., Voy., XVII, 12, 
a, b. 
§ Bulimus zebra, Ol., XVII, 10 : — Pupa tridens, Drap., Ill, 57 ; — Pupa variabilis, 
Ib., 55, 56. 
^ Buliinus avenaceus, Bvug., (Pujia arena) Drap., III., 47,48; — P. secale, Ih., 
49, 50; — P. frumentum, lb., 51, 52 ; — Bulimus similis, Brug. ; — P. cinerea, Drap., 
Ib., 53, 54 ; — P. polyedon, IV, 1, 2 : — Helix quatridens,(Pvpa qiuulr., Dr:ip.) Ib. 3. 
D 2 
