16 HELICID^!. 



Fuaco " as the habitat, though he previously says that 

 the box was labelled " Santa Barbara." The specimens 

 I saw from the collection of Dr. Newcomb came from 

 the " desert region east of California ; " so that I have 

 no doubt the southern locality is the true one. My 

 specimens were larger than those given above, and were 

 in many respects like H. alauda ; and I unfortunately 

 described them before noticing the Zoological Pro- 

 ceedings. 



HELIX EXIGUA, STIMPSON. 



Testa minuta, discoidea, pellucida, corneo-viridescens, supra 

 convexiuscula, infra concava ; anfrac. 3^ convexis, spiraliter 

 striatis, et [apice excluso] costis longitudinalibus reniotis strias 

 incrcmenti oblique decussantibus instructis ; anfractu ultimo ro- 

 tundato ; sutura impressa ; umbilico lato : apertura rotundata ; 

 labro siinplici. 



SYNONYMS AND REFERENCES. 



Helix exiyua, STIMPSON, Proc. Bost. Soc. Nat. Hist. III. 175, Jan. 1850. 

 DlAM. .078 poll. 



Hob. Massachusetts, prope Bostoniae. 



Young specimens of H. striatella, which it much re- 

 sembles, have nearly one whorl less, want the revolving 

 lines, and have the whorls somewhat angular instead of 

 rounded. Usually found under dead leaves, in low, 

 moist places. 



