140 BULIMULUS. 



Subgenus PLECTOSTYLUS (Vol. xi, p. 2.). 



B. BRODEKIPII var. ELONGATUS Orb. This name \vas proposed 

 by d'Orbigny (Voyage, p. 266) for narrower specimens of smaller 

 size than broderipii, length 30, width 17 mill., taken by him at 

 Cobija. 



Subgenus SCUTALUS Alb. (Vol. xi, p. 12). 

 B. PROTEUS (Brod.). Vol. xi, p. 13. 



Add to references : Bulimus proteus SEMPER, Reisen im Archip. 

 Phil., Landmoll., p. 152 (anatomy); Balimulus proteus STREBEL, 

 Beitr. Mex. Land- und Siissw.-Conch. v, p. 58, pi. 13, f. 2; pi. 14, f. 

 3a-g; pi. 16, f. 1 (anatomy). [Probably not B. proteus W. G. 

 Binney, Ann. Lye. N. H. N. Y., ix, p. 37, nor Scutalus proteus W. 

 G. Binney, Ann. N. Y. Acad. Sci. iii, p. 123, = Neopetraus rhodo- 

 larynxf]. Scutalus rhodolarynx W. G. Binney, Ann. N. Y. Acad. 

 Sci. iii, p. 123, pi. 12, f. D. 



Mr. Binney may have had his preparations of the radula of this 

 species and a Neopetraus transposed. See foot of p. 171, vol. xi. 



B. VERSICOLOR (Brod.). Vol. xi, p. 16. 



Add to references: Bulimulus versicolor STREBEL, op. cit. p. 59, 

 pi. 13, f. 4; pi. 14, f. 4a-e ; pi. 16, f. 2 (anatomy). 



B. MERCURIUS Pfeiffer. Vol. viii, p. 50, pi. 10, f. 12, 13. 



This species is said by Dr. von Mollendorff to be no Cochlostyla, 

 and he suggests that it may be a South American Bulimus. I know 

 of none at all resembling it, though I quite agree with him in deny- 

 ing the propriety of including it in Prochilus or any Philippine group. 



B. STEEREI Pilsbry. PI. 18, figs. 50, 51, 52. 



Shell umbilicate and broadly rimate, ovate-conic, with straight- 

 sided spire and convex last whorl, the base angular around a large 

 umbilical excavation; solid and strong, opaque soiled white, with 

 indistinct brown stains in most specimens, and usually an indistinct, 

 whiter girdle at the periphery, the apex white. Surface lustreless, 

 finely wrinkled longitudinally, and densely granose in spiral series, as 

 in B. proteus and B. montezuma; the granules small but strongly 

 expressed. Apex obtuse, earlier 1J whorls strongly vermiculate- 

 wrinkled, the wrinkles anastomosing and largely transformed into a 



