58 BERENDTIA. 



trum in the sculpture of the early whorls, which are retained 

 in the adult stage in both groups. It is more like Eucalodium 

 in the slender internal axis, but differs in the entire spire, the 

 shape of the aperture and the ribbed jaw. 



B. TAYLORI (Pfeiffer) . PL 18, figs. 30-36. 



Shell deeply creased in the umbilical region but imperfo- 

 rate, turreted, regularly tapering, reddish-brown. Surface 

 sculptured with strong curved and oblique riblets, the inter- 

 vals densely and finely striate spirally. Whorls 11-111/2, but 

 slightly convex, separated by an impressed suture, the last 

 whorl free and descending in front, more or less angular at the 

 periphery, having a rounded ridge at the base, and an acute 

 keel above. Aperture irregularly ovate, angular above, the 

 outer margin rounded, inner more straightened. Peristome 

 continuous, broadly flaring. 



Length 48, diam. of last whorl above aperture 9 mm. ; long- 

 est axis of aperture 12-13, breadth 10% mm. 



Length 49, diam. of last whorl above aperture 8 mm. ; long- 

 est axis of aperture 12, breadth 10 mm. 



Length 46, diam. of last whorl above aperture 8 mm. ; long- 

 est axis of aperture 12, breadth 10 mm. 



High table-lands of the interior of Lower California, espe- 

 cially about Muleje, under loose volcanic rocks (W. M. Gabb). 



Clausilia? (Baleaf) taylori PFR., P. Z. S., 1861, p. 27, pi. 2, 

 f. 7; Malak. Blatt., 1861, p. 83 ; Monogr. Hel. Viv., vi, p. 516. 

 SOWERBY, Conch. Icon., xx, pi. 1, f. 6. Cylindrella (Uro- 

 coptis] newcombiana GABB, Amer. Journ. of Conch., iii, p. 

 237, pi. 16, f. 3 (1867). Holospira newcombiana Gabb, 

 TRYON, A. J. Conch., iii, p. 314, pi. 21 (15), f. 33 .Cylindrella 

 taylori Pfr., BINNEY, Land and Fresh-water Shells of N. A., 

 i, p. 189, f. 328 (shell), 329 (teeth and jaw) . Berendtia tay- 

 lori Pfr., CROSSE & FISCHER, Journ. de Conchyl., xvii, 1869, 

 p. 191; xviii, 1870, p. 22, pi. 5, f. 11-17 (anatomy) ; Miss. 

 Scient. au Mex., Moll., i, p. 304, pi. 14, f. 1 (shell), pi. 16, f. 

 1-4 (anatomy). 



Very distinct from other known forms. Pfeiffer 's type 

 measures, length 47, diam. 8y 2 , aperture with peristome 13 



