460 THE CANADIAN NATURALIST. [Yol. ix. 



and two-tenths millimeters, width four millimeters. Surface 

 smooth, but with microscopic lines of growth, about fifteen in a 

 millimeter. Aperture oblique, oval, greatly contracted by a broad 

 lamellar expansion of the columella, extending more than half way 

 across, even in small individuals. Outer lip thickened, slightly 

 reflexed. Suture little impressed, imperforate, but last turn 

 slightly excavated in the umbilical region. The shell is usually 

 black in color, and under the microscope shows no distinct struc- 

 ture, from which it may be inferred that it was corneous in 

 texture. It is thicker than the shell of Zonites priscus. 



This species is found along with Pupa Vermilioiiensis, and was 

 discovered by Bradley, who was, however, at first disposed to 

 refer it to the genus AnomphahisofMeek', but subsequently, and 

 with good reason, regarded it as distinct and as a land shell. 

 In size and general form it resembles Zonites j^^'iscus, though 

 expanding less rapidly and with rounder whorls ; but it is at 

 once distinguished by its want of the somewhat coarse sculpture 

 of that species, and by the plate which partially covers its aper- 

 ture. Its nearest modern allies in eastern America would 

 seem to be such shells as Helix (^Triodopsis) palliata , and H. 

 (^Stenotremd) monodon. 



For specimens of this shell I am indebted to the persons above 

 named as having furnished specimens of Piq^a Vermilionensis. 



6. Stropliites grandceva^ s. n. (Fig. 15.) 



Descrip)tion. — Shell cylindrical, with obtuse apex. Whorls 

 four or more. Surface covered with sharp vertical ridges, 

 separated by spaces three times as wide. The body whorl about 

 four millimeters in diameter, with about thirteen vertical ridges 

 visible on one side. Length of specimen probably not quite 

 perfect, about eight millimeters. The shell, which has dis- 

 appeared, must have been very thin, and the surface remaining 

 is smooth and shining. In general form, so far as can be ascer- 

 tained from a very imperfect specimen, this shell must have 

 closely resembled the modern Pupae of the genus Strop)hia of 

 Albers. 



The only specimen known is from the Erian (Devonian) plant- 

 beds of St. John, New Brunswick, which, besides affording great 

 numbers of remains of land plants, have produced the only 

 Erian insects as yet known. It was vsent to me by Mr. G-. F. 

 Matthew, of St. John, along with specimens of fossil plants; 



