200 BULLETIN 181, IMITED SlTATES NIATTONACL MUSEUM 



1863. Cyclotus glaucostoma Reeve, Conchologica iconica, vol. 14, sp. 35. 



1897. Neooyclotus (NeocycIMus) f^ic^t/cos^o^nws Kobelt and Mollendorff, Nachrb. 



deutschen malak. Ges., vol. 29, p. 137. 

 1923. Poteria (Neooyclotus) glaucostoma glaucostoma H. B. Bakes, Occ. Pap., 



Mus. Zool. Univ. Michigan, No. 137, p. 38. 



Shell umbilicated, depressed-subturbinate, solid, sculptured with 

 irregular oblique plications and striations on the upper surface, shin- 

 ing, chestnut colored. Spire slightly conoid, apex obtuse, smooth. 

 Whorls 4, convex, increasing rapidly in size, the last dilated an- 

 teriorly, slightly minutely malleatedly granulose. Umbilicus per- 

 vious, not equaling one-fourth the diameter of the shell. Aperture 

 scarcely oblique, subrotund, bluish pearly within ; peristome straight 

 with a slight angle at the posterior angle. The inner lip somewhat 

 thickened and arched. Altitude, 9 mm.; greater diameter, 18 mm.; 

 lesser diameter, 14 mm. 



Habitat: Venezuela. 



As we have not seen this species, we give a translation of Pfeiffer's 

 description and copy Reeve's figure. 



We believe this species to be related to A. (A.) aulari (H. B. 

 Baker), from which the lesser size will differentiate it. 



APEROSTOMA (AUSTROCYCLOTUS) PEILEI (Gude) 



Plate 27, Figuees 1-2 



1912. Neooyclotus peilei Gude, Proc. Malac. Soc. London, vol. 10, p. 22 (text fig.). 

 1912, Neocyclotus peilei Kobelt, Martini-Chemnitz Conchylien Cabinet, vol. 1, 

 sect. 19, pt. 3, p. 896, pi. 137, figs. 14-15. 



We have not seen this species and so quote Gude's description and 

 copy his figures : 



"Shell somewhat narrowly umbilicated, depressed turbinate, more 

 or less striated transversely, the striae being intersected by other 

 striae descending obliquely forward, thus forming coarse granules 

 arranged in quincunx, except in a few scattered places where a portion 

 of either set of striae is continuous, in some instances even forming 

 zigzag lines, while near the peristome the oblique striae tend to dis- 

 appear and the granules become obsolete. Whorls 5, convex, increas- 

 ing rather slowly at first, the last increasing rapidly, and dilated 

 toward the mouth; earlier whorls pale, becoming gradually 

 darker, last dark brown with blackish streaks at the lines of growth, 

 descending slowly in front. Aperture circular, scarcely oblique; 

 peristome simple, acute, slightly sinuate at the junction of the upper 

 and columellar margins; operculum slightly concave. Diam. maj. 

 39.6, min. 30 mm. ; alt. 30 mm. 



"Type in the British Museum, presented by Major Peile. 



