186 BULIMULUS-BOSTRYX-LISSOACME. 



M. E. GRAY, Figs. Moll. Anim., pi. 73, f. 1. Bulimulus (Scutalus) 

 munsteri Orb., MARTENS, Conchol. Mittheil, i, p. 162. 



B. DENDRITIS Morelet. PI. 50, fig. 63. 



Shell covered-perforate, turrited-conic, thin, shining, delicately 

 plicate-striate. Whitish or pale straw-color, marbled irregularly 

 with brownish-purple or chestnut, the spots confusedly arranged in 

 decurrent series, the base with a band of the ground-color circum- 

 scribing the umbilical region. Spire tapering, the apex corneous 

 and rather acute. Whorls 7, little convex, the last scarcely half the 

 length of the spire, banded around the perforation. 



Aperture oval ; peristome simple, thin, the right margin arcuate, 

 columellar margin dilated above, vaultiugly reflexed. Alt. 20, diam. 

 8 mill. (Morel}. 



Near Hxiro, Valley of Santa Ana, Peru, (Angrand), in axils of 

 maize leaves and on reeds. 



B. dentritis (typog. err.), MOREL., Ser. Conch., iii, p. 206, pi. 9, f. 

 5 (1863). B. dendr it-is MOREL., t. c., p. 207. PFR., Monogr., vi,p. 

 137. 



The largest specimens are 22 mill. long. It is a thin and fragile 

 species, recalling Coclilicella acuta in form, but larger and more 

 prettily colored. The umbilical perforation is narrow and masked 

 by the reflexion of the columellar lip ; the aperture is medium sized, 

 and partakes of the external coloring, by transparence. It is sculpt- 

 ured with fine, regular, perceptibly sinuous folds, which show as 

 yellowish lines. There is a buff form of this species, broadly streaked 

 with brown. 



The sculpture of the apex is not known, and the delicacy of the 

 shell raises a doubt of the generic position of the species. It may 

 prove to be a Mesembrinus. 



B. DENDRITOIDES Pilsbry, n. n. PI. 50, figs. 60, 61. 



Shell openly umbilicate, oblong-turrited, thin, substriate, rather 

 shining. Whitish, ornamented with rufous-ferruginous interrupted 

 bands or dots in transverse series. Spire turrited, the apex rather 

 acute, blackish-corneous. Whorls 8-9, very convex, the last about 

 i the length of shell, attenuated at base. 



A pert u re little oblique, oblong, fleshy-brownish within ; peristome 

 simple, slightly expanded, the right margin narrowly arcuate, col- 



