BULIMULUS-SCUTALUS. 1 5 



Alt. 42, diam. 21 ; alt. of aperture 23, width 15 mill. 



Peru 







Bulimulus proteiformis DOHRN, Malak. Bl., x, 1863, p. 154. 

 PFR., Monogr., vi, p. 42. SEMPER, Keisen im Phil. Archip., Land- 

 moll., p. 152, pi. 15, f. 7 ; pi. 17, f. 5. 



The measurements of other specimens vary between the dimen- 

 sions given above, scarcely two being of the same size. There is great 

 similarity with B. proteus, the differences consisting in the thick, 

 chalky shell, the dark brown aperture, the inconspicuous sculpture, 

 granulation being confined to the last whorl. The upper whorls are 

 always eroded smooth so that sometimes the brown color of the inte- 

 rior shows through. 



The above details are from Dohrn. I have not seen the species, 

 and it has not been figured. 



B. CORAFORMIS Pilsbry, n. sp. PL 30, figs. 10, 11, 12, 13. 



Shell deeply umbilicated with a long tangential lunate rimation, 

 ovate-pyramidal, solid, dull whitish. Surface lusterless, with close, 

 irregular growth-wrinkles cut into oblong granules by spiral incised 

 strise. Spire turrited, the apex obtuse, nepiouic II whorls densely 

 pitted (fig. 10) ; whorls 7, moderately convex, the latter third of the 

 last slowly but decidedly ascending, umbilical region broadly exca- 

 vated behind the columellar lip. 



Aperture ovate, vertical, its plane level with the ventral convex- 

 ity of last whorl, purplish-brown inside but white in the throat ; 

 peristome broadly expanded, bell-shaped, purple-brown, fading to 

 wliitish at the edge ; the extremities approaching and connected by 

 a short, white parietal callus ; columella purple-brown, arcuate, 

 very broadly built forward and expanded, white-edged. 



Alt. 37 J, diam. 25 mill.; alt. of aperture 20 mill; greatest width 

 14 mill. 



Peru, on the Maranon (U. S. Nat. Mus.) 



The granulation is visible to the naked eye, although minute, and 

 is developed on all of the post-nepionic whorls, but faint on the first 

 one. 



The species has much in common with B. cora d'Orbigny, but 

 the umbilical excavation is far wider, the central perforation much 

 broader, the lip margins more approaching, and the earlier whorls 

 of the spire not keeled. In B. cora and the other Neopetrceus spe- 

 cies of similar form, the earlier post-nepionic whorls are acutely 



