24 THE SPECIES OF 



No. 2). These are perhaps but varieties of the same species. 



They inhabit Sinaloa, on the banks of the Mazatlan River. 

 Helix aspersa, Muller, is said by Forbes (Proc. Zool. Soc. 1850, 



p. 53) to have been found at Santa Barbara. Its presence 



may have been accidental. 

 Belix Mazatlanica Pfeiffer, Mai. Blatt. iii. 43, is attributed to 



the locality from which its name is derived. 



Genus BULIMUS scopoli. 



BULIMUS CALIFORNICUS Reeve. 

 Plate LXXIX. Figure 15. 



Bui. testa subacuminato-ovata, tenuicula, vix umbillcata, anfr. 6, laevi- 

 bus, columella reflexa, labro simplici ; lactea, zonulis interruptis transversis 

 coeruleo nigricantibus cingulata. 



Hob. California. 



There is little novelty in the character or general aspect of this 

 species, but it is certainly distinct. (Reeve). 



SYNONYMS AND REFERENCES. 



BuUmiis Californkus Reeve, Con. Icon. No. 378, (Dec. 1848). 

 Pfeiffer, Mon. Hel. Viv. iii. 422. 



Remarks. I have seen no authentic specimen of this 

 species. Above is Reeve's description, and his figure is 

 given on the plate referred to. Judging from them, I can- 

 not agree with the opinion expressed by Gould (vol. ii. 

 p. 275) that it is identical with B. serperastrus. The fig- 

 ure is one half larger than the natural size of the shell. 



BULIMUS EXCELSUS Gould. 



Plate LXXIX. Figure 12. 



T. elongato-ovata, acuminata, solidiuscula, la;vis, fulvida, albido 



strigata; spira elevata, peracuta, anfr. 7, ultimo trientes duos long, vix 



sequante : apertura trientem long, adequans, sub-ovata ; labro albo antice 



revoluto, subcontinuo, ad columellam expanse, fissuram latam obtegente. 



Bulimus excekus Gould, Journ. Boston Soc. Nat. Hist. vol. vi. part 3, p. 376, pi. 



xiv. fig. 3, (Oct. 1853). 

 Bulimus elaius Gould, 1. c. in tab. 



Shell ovate-fusiform, rather solid, smooth, pale coffee-colored, 



