184 General Notes. [ March, 
and birds) are regarded as the homologue of the scutiform cartilage 
in mammals, 
It will be noticed upon comparison with Huxley (Anatomy of 
TERRESTRIAL MorLusca oF Texas.—During a recent visit to 
Texas the writer had an opportunity of making quite an exten-. — 
-sive collection of the land shells, and a still more interesting col- 
lection of the Reptilia and Batrachia. The land shells exhibited 
a few peculiar characters which would be of interest if fully dis- 
cussed. The species discovered were as follows : 
1. H. thyroides Say; two varieties, one of which has the um- 
bilicus closed. This variety was the only one occurring at Orange 
and Beaumont, on the Texas and New Orleans Railroad, one 
hundred miles east of Huston. At Huston only the typical spe- 
cies was found. Mr. Bland, who has kindly examined these 
shells, suggests that the non-umbilicate variety is the Æ. bucculenta 
Gould. 
2. Zonites friabilis W.G. Binney.. Typical; rare, under bushes 
at Orange. : 
3. Helix monodon Racket; a small, elevated variety, under logs 
in pine woods. 
5. Bulimulus alternatus Say. Common under bushes in prairies. 
6. Helix mooreanus W. G. Binney; “considered a variety of H. 
tholus.” (Bland.) + ' 
7. Helicina tropica Jan. 
8. H. berlandieriana Moricand. This shell occurred in great 
abundance in the grass, on a sandy bluff of the bayou at Huston, 
associated with the HW. ¢riodontoides Bland, and Æ. thyroides Say. 
In this situation the shells were almost totally without cover, 4 — 
circumstance somewhat anomalous. - 
9. H. texasiana Moric; abundant under logs, bark, stones, ete. 
10. H. espiloca Ravenel; abundant at Orange, and also at 
even in the door-yards of private residences. Associated with it 
z Helix pulchella Müll., and Pupa pentodon Say, at Brasheat 
= II. Helix vultuosa Gould, “typical,” (Bland). With this was _ 
_ found, at a place twenty miles north of Beaumont, in Hardin 
rew one 
