56 BULIMULUS-CENTRAL AMERICAN. 



the right margin strongly arched, columellar margin dilated and 

 reflexed, free. Alt. 16, diam. 8* mill. ; alt. of aperture 7? mill. (P/V.). 



Central America (Morelet in Cuming Coll.). 



Bulimus nubeculatus PFR., P. Z. S., 1851, p. 257 ; Monogr., iii, p. 

 438 ; Conchyl. Cab., p. 92, pi. 31, f. 15, 16. 



Considered a variety of corneus by von Martens (who apparently 

 had not seen specimens), and on his authority so treated here. Its 

 main differential characters are the clouded coloration and produced, 

 subangular basal lip. 



Var. MINOR v. Mart. PI. 10, figs. 71, 72. 



Shell one-colored, grayish-corneous, similar to B. corneus but 

 smaller. Alt. 12, diam. 8; alt. of aperture 7 mill. 



San Andres Tuxtla, near Vera Cruz, E. Mexico (Salle"). 



Bulimulus (Leptomerus) nubeculatus Pfr., CROSSE & FISCHER, 

 Moll. Mex.,i, p. 556, pi. 24, f. 7, la. 



On account of its locality, the specific relationship of this form to 

 corneus or nubeculatus is by no means certain ; it may be a form 

 of coriaceus. 



B. SARCODES (Pfeiffer). PI. 10, figs. 74, 75, 76. 



Shell openly perforate, oblong conic, thin, striatulate, very obso- 

 letely decussated with spiral lines under the lens, flesh colored. 

 Spire conic, rather acute. Whorls 6, a little convex, the last about 

 four-ninths the length of shell. Columella lightly arcuate. Aper- 

 ture oval, shining inside, the peristome unexpanded and acute, right 

 margin arcuate, columellar margin dilated, vaultingly spreading. 

 Alt. 17J, diam. 8 mill. ; aperture 8 mill, long, 4a wide. (Pfr.}. 



Honduras (Dyson). 



Bulimus sarcodes PFR., P. Z. S., 1846, p. 30 ; Monogr., ii, p. 220 ; 

 Conchyl. Cab., p. 233, pi. 62, f. 39, 40. REEVE, Conch. Icon., pi. 

 61, f. 414. 



No later authors have added anything to Pfeiffer's original de- 

 scription of this species, which has not occurred to other collectors. 

 It differs from B. unicolor in having faint spiral lines, or " delicate 

 impressed striae." " It is an extremely delicate, transparent shell ' 

 according to Reeve. 



B. DYSONI (Pfeiffer). PL 10, fig. 83. 



Shell perforate, oblong-conic, quite thin and somewhat transpar- 

 ent ; corneous brown ; surface somewhat shining, with slight growth- 



