1913.] NATURAL SCIENCES OF PHILADELPHIA. 641 



Odontostomus (Cyclodontina) inflatus fasciatus (Potiez et Michaud). 

 Pupafasciata P. & M., Galerie, I, p. 165, pi. 16, figs. 19, 20. 

 Odontostomus {Cyclodontina) inflatus fasciatus P. & M., Pilsbrj^, Man. Conch.. 

 (2), XIV, p. 61, pi. 11, fig. 43. 



This was one of the commonest shells at Ceara-Mirim and at Baixa 



Verde, where it was taken, living and dead, generally aestivating 



under stones and debris. It was also taken living at the fossil beds 



below Taipu. Nearly all specimens taken have four buccal teeth 



and are nearly typical. 



Odontostomus (Cyclodontina) inflatus costulatus Ancoy. pi. XXIII, figs. 11, 12. 



Odontostomus inflatus Wagner, var. costulata Ancey, Jour, de Conchyl., LII, 

 p. 303, 1904. 



Two specimens were taken below Quixada, the present terminus 

 of the Ceara & Baturite R. R. It has not before been figured. 

 Odontostomus (Cyclodontina) inflatus maranguapensis n. subsp. Pi. XXIII, fig. 18. 



Shell umbilicate, shining, translucent, gray throughout except an 

 indistinct buff line below the lower suture and a narrow, scarcely 

 perceptible chestnut band behind the peristome, intensified at the 

 suture and in two blotches, one opposite the upper palatal tooth and 

 one at the basal side of the umbilicus, both being perceptible within 

 the mouth; spire turreted-conic, with slightly convex sides, apex 

 obtuse; nepionic If whorls very finely and nearly evenly decussated, 

 the spiral lines becoming obsolete on the second whorl and showing 

 thereafter as minute wrinkles, chiefly in the grooves of the distinct, 

 irregular, retractive costulse (about four to the millimeter on the 

 penultimate whorl) which cover all the remaining whorls, dip deeply 

 into the umbilicus and extend lightly over the parietal wall. Whorls 

 8, separated by a narrow, deep, but not channelled, suture, scarcely 

 convex, the last having two pits behind the outer lip, one midway 

 and the other near the base, and a slight depression paralleling the 

 end of the suture. Aperture nearly vertical, round oval, obstructed 

 by a low, entering ridge corresponding to the lower pit and taking 

 the place of the lower palatal tooth, and three distinct teeth: a 

 compressed parietal lamella, a large vertical columellar lamella with 

 a horizontal continuation below which includes the oblique, twisted 

 umbilicus, and a moderate-sized upper palatal lamina in the middle 

 of the outer lip; peristome light gray, broadly expanded and very 

 slightly reflected, the channels characteristic of the section being, 

 rather shallow. 



Alt. 18, diam. 7.25, alt. of mouth 6 mm. 



One specimen was taken on the Maranguape Mountain; a second, the 

 type, at Monguba, on the Ceara & Baturite R. R., about 27 kilo- 



