THE NAUTILUS. 41 



A NEW SPECIES OF BULIMUS. 



BY H. A. PILSBRY. 



Auctus ill Stearnsianus n. i 



Shell narrowly umbilicate, subulate, tapering, rather solid but not 

 thick; covered with an opaque dark olivaceous-brown cuticle, indis- 

 tinctly and irregularly streaked obliquely, and wanting on the 

 fleshy-whitish earlier whorls. Surface shining, with close, fine 

 growth-wrinkles and very minute, close and superficial spiral striae. 

 Spire tapering regularly from the last whorl to the obtuse apex, 

 which is smooth (but somewhat worn) in the specimens. Whorls?, 

 hardly convex, with linear sutures, the last not deflexed. 



Aperture contained about 2J times in alt. of shell, long-ovate, 

 dull purplish within, somewhat oblique; peristome white, obtuse, a 

 trifle expanded at the edge, the margins in a plane and brought for- 

 ward to the level of the front of the body-whorl ; columellar margin 

 expanded ; parietal callus rather heavy. 



Alt. 19, diam. 7 ; alt. of aperture 8 mill. 



Alt. 19*, diam. 75; alt, of aperture 8i mill. 



Sierra de la Ventana, Argentina (U. S. F. C.). 



A peculiar species, not agreeing well with others of this group, 

 but so far as I can see not referable to any section of Bulimulus. In 

 my opinion, Anctits is to be grouped with Odontostomus, Tomigerus 

 and Anostoma, not with the true Bulimuli. 



The first whorl in this species is truncated pyramidal, with the 

 earlier third depressed, rapidly ascending; a comma-shaped apical 

 pit passed into the suture. The whorl just back of the upper angle 

 of the aperture, is somewhat flattened, recalling the condition so con- 

 spicuous in Plekocheiltis Taylorianus Rve. It is named in honor 

 of my friend R. E. C. Stearns, who some years ago transmitted to 

 me for identification specimens collected by the "Albatross." 



LAND MOLLUSCA FROM THE REJECTAMENTA OF THE RIO GRANDE, 



NEW MEXICO. 



BY T. D. A. COCKERELL. 



A few weeks ago I collected a quantity of small land shells in the 

 rejectamenta of the Rio Grande at.Mesilla, and sent them all to Dr. 

 Sterki, who has kindly identified them as follows: 



