No, 4.] BILLINGS — ON FOSSILS. 231 



irregular rid^i-es above mentioned. I propose to call it Aulocopina^ 

 and shall, hereafter, with additional material, endeavour to give 

 a more detailed account of it. 



I shall dedicate the only species known to me, to its discoverer, 

 3Iajor Chas. Coote Grant, H. P. 16th Regt. Foot. 



1. A. GrRANTL — One oP the specimeis is 16 lines in length 

 and 12 lines in width about the middle. The osculum is a little 

 over two lines in width. There are in general from 5 to 9 stria) 

 -or ridiies on its surface in the width of 3 lines. These radiate 

 from the osculum and continue down to the base, so that the 

 whole surface is covered with them. The specimen is somewhat 

 compressed, so that a transverse section through the mid-length 

 would be a somewhat irregular ellipse, the greater axis 12 lines, 

 .as given above, and the lower 9 lines. 



The second specimen is also somewhat compressed, and is 

 elongate-ovate, proportionately more slender than the former. 

 Leno'th 14 lines ; oreater diameter at the middle 8 lines ; 

 lesser diameter 6 lines ; diameter of the osculum 2 lines. There 

 are 6 to 8 striae in the width of 3 lines, and they cover the whole 

 surface. 



The third specimen shows only the summit of a large indivi- 

 dual. The diameter is 14 lines; width of the osculum 2 lines ; 

 there are from 6 to 8 ridges in the width of 3 lines. The cen- 

 tral portion is concave, the osculum being situated in the bottom 

 of the concavity. 



A fourth sp3cim3n, a fragment, has a diameter of 2 inches at 

 "■ the summit ; the ofculum 4 lines wide. 



Occurs in the Niairara formation at Hamilton. 



DEVONIAN. 



The Devonian fossils, described in this paper, having been all 

 collected within a limited area in Ontario, I shall not give the 

 localities after each species, but only mention here that all the 

 Corniferous species are from the Counties of Haldimand, Wel- 

 land, and Oxford. The species of the Hamilton formation are 

 from the Township of Bosanquet. 



The internal structure of the corals, was ascertained princi- 

 pally from polished sections, skillfully prepared by Mr. T. C. 

 ■.Weston, the Lapidary of the Survey. 



