143 Cincinnati Society of Natural History 



In the massive coarse-grained limestone found on the eastern 

 side of the railroad, below track level, at 58.9 miles from Ludlow, 

 a small fragment of a Bellerophon was found which preserved a 

 portion of the shell along the carina. The slit-band had a width 

 of three-fourths of a millimeter, and consisted of two distinctly 

 defined lines between which were the relatively distinct concave 

 lines crossing the band ; the depression of the latter below the 

 level of the limiting lateral lines is almost imperceptible. The ele- 

 vation of the band above the general convexity of the shell is slight. 

 The transverse striae bend back only moderately on approaching 

 the slit-band, very much less than in Bellerophon recurvus, per- 

 haps about as much as in Bellerophon subglobulus. It is not cer- 

 tain that this specimen belongs to the same species as Bellerophon 

 rogersensis, although it occurs in strata in which the latter species 

 might be expected. 



41 — Conularia trentouensis-rogersensis, var. nov. (Plate, I, 

 Fig. 16) — Specimen laterally compressed owing to its preserva- 

 tion in a relatively soft argillaceous rock. Originally with four 

 equal faces separated by distinctly impressed sulci, each face sub- 

 tending an angle of about 13 to 15 degrees. Faces flat or only 

 slightly convex, transversely striated. The striae are oblique, ris- 

 ing from the sides toward the median part of the face in the form 

 of an inverted and very much flattened letter V with rounded apex. 

 Not all of the striae pass continuously across the median part of 

 the face. This is indicated by the fact that there are a few spots 

 on the shell where four transverse striae on one side of the median 

 part occupy the same interval as three striae on the other side. 

 Where the face has a width of 20 mm., about 11 striae occupy 

 a length of 5 mm., measured transversely to the striae. The trans- 

 verse striae are very narrow, equalling scarcely a tenth of a milli- 

 meter, and are crowned with a row of minute granules, of which 

 there are about 13 in a width of 13 mm. Between the sharp, nar- 

 row, transverse striae there is a series of short longitudinal striae, 

 corresponding in number to the minute granules cresting the trans- 

 verse striae immediately above, toward the larger end of the shell. 



38 



