NATURAL SCrENCES OP PHILADELPHIA. 
197 
Notes on American Land Shells, No. 4. 
BY W. G. BINNEY. 
The following Catalogue of American Terrestial Mollusks, is offered in the 
hope of drawing attention to the subject, and by exciting criticism, to furnish 
the first step towards an arrangement of the confused synonomy. The list is 
necessarily incomplete, as but a small portion of the oldest States has been 
thoroughly searched, and an immense extent of territory remains quite unex- 
plored. 
The species of the Pacific coast north of Mazatlan, are catalogued separately. 
The Mexican species will be published in a subsequent paper. 
Reference is made only to authors giving a description or figure of each 
species. 
I. 
Familia LIMACEA. 
Arion. 
1. A. f oliatus Gld. 
LiMAX. 
2. L. 0 0 1 u m b i a n u s Gld. 
Familia HELICEA. 
succinea. 
cingulata Forbes. 
Nuttalliana Lea^ Pf., Binn.^ 
Oregonensis Lea^ Pf.^ Binn,^ 
rustic ana Gld.^ Pf. 
Species exclusa. 
S. aperta, Lea, Ins. Sandw. nec 
Cal. teste Gould. 
Helix. 
H, a c u t e d e n t a Tl^. G. Binn. 
? var. /? Helix Loisa, W. G. Binn. 
E. ceruginosa Gould, =H. arrosa. 
H. a n a c h 0 r e t a W. G. Binn. 
H. arboretorum Val., =Helix Nick- 
liniana. 
H. areolataiy., Phil.^ Chemn., 
Gld.j Rve. 
rar. /?. Pfeiffer. 
Tar. y. Pfeiffer. 
H. areolata var. Chemn. 
. H. a r r o s a Gld. in litteris. 
H. ceruginosa Gld. (olim,) W. G. 
Bine. 
. H. aspersa Mull3 
H. Baskervillei Pf. &c. =H. devia. 
. H. Californiensis Lea, Tros. 
Chemn., Rve., DeK., Binn. 
H. vincta Val., Rve., Pf., Chemn., 
10 
11 
12 
//. Californiensis Pf., Chemn.; 
=H. Nickliniana. 
Rve. 
13. H. C o 1 u m b i a n a Lt 
Tros. 
1858.] 
DeK., Chemn., Pf, Rve., Binn. 
H. labiosa Gld., Pf. 
H. damascenus Gld.=H. Pandorae. 
14. H. devia Gld., Pf 
H. Baskervillei Pf , Rve. 
15. H. Dupetithouarsi Desk., 
Chemn., Pf, Rve., W. G. Binn., 
Gld. 
{junior), H. Oregonensis Lea, Tros., 
DeK., Pf. 
16. H. e X a r a t a iy. 
IT. H.fi delis Gray, Hull., Chemn., 
Pf, Rve., W. G.Binn. 
H. Nuttalliana Lea, Tro3., DeK. 
Binn., Gld. 
18. H. germ an a Gld., Pf. 
19. H. i n f u m a t a Gld., W. G. Binn. 
20. H. i n t e r c i s a W. G. Binn. 
H. Nickliniana var. Binn. 
21. H. Kelietti Forh., Chemn., Pf, 
Rve. 
labi 
biana. 
H. Lecontii Lea, =H. loricata Gld. 
22. H. 1 e vi s Pf, Chemn. 
var. /?. Pfeiffer. 
23. H.Lois a W. G. Binn., (an H. 
acutedentatae, var. ?) 
24. H. loricata Gld., Pf 
H. Lecontii Lea, Pf. 
25. H. M a z a 1 1 a n i c a P/. 
26. H. Mormon um Pf. 
H. nemoraviga Val., ==H. Nicklini- 
ana. 
27. H. N e w b e r r y a n a W. G. Binn^ 
28. H, Nickliniana Lea, Tros.., 
Binn., {excl. varr.) 
