EARLY DEVONIC HISTORY OF NEW YORK AND EASTERN NORTH AMERICA 22 7 



obscure outline, all the surface annulations and furrows alike being crossed 

 by very fine regular and equal concentric lines, so that in respect to expres- 

 sion it is not remote from the Oriskany species T. elongatus. The 

 internal cast bears the usual conformation, suggesting a series of inverted 

 and ensheathed cones. 



These shells attain a length of 35-40 mm with an apertural width of 

 4 mm. 



Locality. Common in the sandstone on the Portage road, Gaspe 

 Basin. 



Species name. Jacques Cartier. 



Platyceras gaspense nov. 



Plate 14, figure 15 



A rather small species with small spiral of iy4 whorls very rapidly 

 expanding so that at the end of the 1^-2 volution the shell is of notable 

 width ; thence the whorl becoming free and suberect suggesting the outline 

 of P. thetis Hall of the Hamilton shales but with shorter body whorl 

 and larger spire. The final whorl is compressed but appears to have been 

 subelliptical in cross section. Surface smooth, with one or more longitudinal 

 furrows. 



Locality. Gaspe sandstone, Portage road, Gaspe Basin. 



Holopea gaspesia nov. 



Plate 15, figures 1-7 



Shell rather small. Spire short, whorls 3-4, somewhat flattened beneath. 

 Expansion rapid, sutures sharp but not deep though the sutural region may 

 be flattened ; nonumbilicate. Stoma subcircular. Surface with fine and 

 close concentric lines which about the sutures are gfathered into coarse 

 raised radii which are lost before traversing one half the whorl. Some 

 specimens show a series of two or more revolving raised lines on the body 

 at and below the periphery and two of these may be the boundaries of a 

 slit-band, though this feature can not be determined from the sandstone 

 casts. This, however, does not appear to be a prevalent character of the 

 species. 



Dimensions. An average specimen has a hight of 10 mm and a basal 

 diameter of 9 mm. 



Locality. This is the commonest of the gastropods in the Gaspe 

 sandstone in the Portage road outcrops, Gaspe Basin. 



