250 



Description. Shell slender, coiled in a regularly spiral curve, whorls 

 three or four, distant from each other about once and a half their width. 

 Surface coarsely striated transversely. 



The specimen is imbedded in a piece of limestone, the lower side being 

 exposed. There are two complete whorls preserved, which appear to be 

 the second and third, the first or inner one absent. Width of the whole 

 coil, 27 lines ; width of the inner whorl (supposed to be the second,) 10 

 lines ; thickness of the last whorl at the aperture, (or where broken off,) 

 4J- lines. 



On the lower side the whorls are uniformly convex ; on the outer side 

 more depressed, but still it is moderately convex ; inner side apparently a 

 little flattened; upper side, judging from the fractured extremity, with a 

 carina at about the outer third, inside of which there seems to be a flat 

 slope. The form of this side, however, still remains doubtful. 



Locality and Formation. P, north-east side of Cow Head, Newfound- 

 land ; Quebec group. 



Collector. J. Richardson. 



ECCULIOMPALUS ATLANTICUS. (N. Sp.) 



Description. Tube slender, forming two whorls, closely coiled, but not 

 in contact. Under side of the whorls nearly uniformly rounded ; upper 

 side angular near the outer edge. 



The spire of the best specimen seen, is 11 lines across ; width of the 

 aperture, 3 lines ; height about the same ; distance of the last whorl from 

 the preceding one, at the aperture, about 1 line. In other specimens, the 

 whorls are not so much separated. 



This species is smaller than E. intortus, and has more slender whorls. 



Locality and Formation. F, Bay of St. John, G, Keppel Island, 

 Newfoundland ; Quebec group. 



Collector. J. Richardson. 



ECCULIOMPHALUS SUPERBUS. (N. Sp.) 



Description. Shell large, gently curved, surface with strong angular 

 transverse striae, about five in two lines. A single imperfect specimen 

 only has been collected. Its length, following the outside, is six inches ; 

 width at the aperture, 15 lines ; depth about 12 lines. The under side is 

 obscurely angular along the middle, and the upper apparently rounded. 

 About two inches of the larger extremity nearly straight, and the remain- 

 der curved to a radius of about fifteen lines. Its form is exceedingly like 

 that of U. Canademis, but it is larger and more strongly striated. 



