PALEONTOLOGIC CONTRIBUTIONS JJ 



convex or nearly straight on the inner margin. Aperture slightly 

 contracted, apertural margin raised a little on outer side; the 

 hyponomic sinus produced spoutlike and distinctly set off. Camerae 

 shallow and crowded ; about eight times as wide as deep. Siphuncle 

 exogastric, small (about I mm wide), nummuloidal. 



Horizon and locality. The label is " Salina under the bridge at 

 Morganville, N. Y." Mr C. A. Hartnagel considers this bed as 

 belonging to the Cobleskill. 



Remarks. We have a small slab with three specimens before us, 

 one of which shows gerontic features in the thickening of the 

 apertural margin, indicating that it was a small species. The 

 most remarkable feature is the spoutlike protruding hyponomic 

 sinus, while the brachial area seems to be but little contracted. 

 Like hyponomic sinuses have been figured by Barrande of species 

 of Phragmoceras (for example, bolli) and Hexam- 

 eroceras ( for example, pollens, pander i). The siph- 

 uncle is exogastric, excluding reference to Phragmoceras to which 

 the species otherwise would seem to be related by the character 

 of the hyponomic area. 



Phragmoceras accola nov. 

 Plate 26, figures 1-5 



Description. Conch of large size for Phragmoceras ; a com- 

 pressed cyrtoceracone, that is, but slightly curved ; expanding very 

 rapidly. Section, as far as recognizable in the compressed con- 

 dition, a long oval, wider on the dorsal (external) side and possibly 

 somewhat angular on the inner side. Living chamber broadly 

 subquadrangular, one-fifth wider than long, longer on the dorsal 

 side by about one-eight, the basal suture nearly straight transverse, 

 the dorsal margin slightly convex, the ventral margin projecting 

 in the proximal two-thirds, the distal third drawn out into a spout- 

 like hyponomic sinus. The apertural margin projecting slightly 

 forward in middle. The aperture was apparently much contracted 

 in the middle, leaving a relatively small subcircular or elliptic open- 

 ing (brachial area) at the external side and a long, narrow, hypo- 

 nomic sinus at the ventral side. Sutures fairly straight transversal, 

 or but slightly curved forward in the middle in earlier portion of 

 conch. They are closely arranged, the depth of the camerae being 

 about one-eight of the width or less. The siphuncle has not been 

 observed in the type specimen. 



Horizon and locality. Bertie waterlime at Schooley's farm, 

 Crane's Corners, town of Litchfield, Herkimer county, N. Y. 



