16 HELICID^. 



Fuaco " as the habitat, though he previously says that 

 the box was labelled " Santa Barbara." The specunens 

 I saw from the collection of Dr. Newcomb came from 

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

 no doubt the southern locaUty is the true one. My 

 specimens were larger than those given above, and were 

 in many respects hke H. alauda ; and I unfortmiately 

 described them before noticing the Zoological Pro- 

 ceedings. 



HELIX EXIGUA, Stimpson. 



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

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

 striatis, et [apice excluso] costis longitudiualibus remotis strias 

 iucrementi obli([ue decussantibus instructis : anfractu ultimo ro- 

 tundato ; sutura impressa ; umbilieo lato : apertura rotundata ; 

 labro simplici. 



SYNOSYJIS iVXD EEFEBEXCES. 



fle?i"x exigtia, Stimpsos, Proc. Bost. Soc. Nat. Hist. III. 175, .Ian. 1850. 



DiAJi. .078 poD. 



Hab. Massachusetts, prope Bostonije. 



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

 sembles, have neai'ly one whorl less, want the revolving 

 lines, and have the whorls somewhat angular instead of 

 rounded. Usually fomid under dead leaves, in low, 

 moist places. 



