EARLY DEVONIC HISTORY OF NEW YORK AND EASTERN NORTH AMERICA 151 



Eotomaria lydia (Billings) 



Plate j6, figures 3, 4 



P 1 e u r ot o m ar i a 1 y d i a Billings. Palaeozoic Fossils. 1874. v. 2, pt i, p. 62, 

 pl- 5. fig- 4, 4^'^ 



Original dcscri/^tion. Sub-turbinate, turreted; spire of three or four whorls, somewhat 

 obliciue; apical angle 90° or a little greater; umbilicus open, about one fourth the width 

 of the base. Hight, ten or twelve lines; width, twelve or fourteen lines. The outside of 

 the body whorl, near the aperture, is nearly vertical, gently convex, more rounded as it 

 recedes towards the apex. The band is situated on the upper outer margin of the whorl, 

 and is indicated in this position, on the cast of the interior, nearly to the apex. Above 

 the band the surface of the whorl is nearly flat, and nearly at a right angle to the vertical 

 axis of the shell at the aperture, but becomes more convex as it approaches the apex. 

 The umbilicus appears to be about one fourth or one third the whole width of the base. 

 The aperture appears to be somewhat effuse at the lower angle. The base of the whorl 

 around the umbilicus is uniformly convex, becoming obscurely angular at the aperture. 



Surface with fine striae, curving backwards above the band and forwards below. 



Locality and fonnation. Indian Cove, Gaspe; limestone no. 8. 



We have seen but a single specimen except the original, which can be 

 safely referred to this species. 



Eotomaria ? rotula nov. 



Plate 16, figures 11-14 



Shell small, spire greatly depressed below the level of the final whorl, 

 SO that the coiling has proceeded almost in a horizontal plane. Whorls 

 about 2, gradually expanding and all in contact. Outline of body whorl 

 bilaterally subsymmetrical, expanding on the lower side to the stome. It 

 bears a peripheral elevated or convex band which is bounded above by a 

 sulcus, though not so well defined below. The upper shoulder of the whorl 

 is subcarinate while the lower surface is broadly rounded and bears an 

 oblique sulcus on the final third of the volution. Aperture sinuous, pro- 

 jecting above and reentrant in a broad curve below the position of the 

 peripheral band. Surface crossed by fine concentric lines which curve 

 forward on the upper surface of the whorl and make a retral turn on the 

 periphery whence they again curve forward in a broad sweep on the lower 

 surface being interrupted by the interior sulcus. 



Dimensions. Diameter 14 mm ; hight 9 mm. 



Locality. Grande Greve. 



Eotomaria delia (Billings) 



Plate 16, figures 6-8 



Pleu r o t o m a r i a delia Billings. Palaeozoic Fossils. 1874. v. 2, pt 1, p. 61, 



pl- 5. fig- 3 

 Original description. Turbinate; base convex; spire of three or four whorls, obliquely 

 conical; apical angle 90" or a little more; a band about the mid-hight; umbilicus minute 



