290 Lower Helderberg Rocks of Port Jervis, etc. 



ferred to T. intrepidus; but they are very unlike, and I can 

 hardly suppose that Mr. Salle would err so much, as to mis- 

 take a species with ferruginous margins on the quill and tail 

 feathers for T. carolinensis. 



As our Kingbird is found in Cuba, I can see no reason 

 why it should not also occur in St. Domingo. 



When Prof. Gabb's collections to be made during the 

 coming winter, are received, they may furnish the means to 

 clear up the uncertainty. 



I have named the above described bird, in compliment 

 to Prof. Win. M. Gabb, who brought it with eight other 

 species from St. Domingo, being all he was able to procure 

 (for want of time) during his residence on that island during 

 the past winter. 



XXVII. — Notes on the Lower Helderberg Rocks of Port 

 Jervis, JSf. Y., with description of a New Pteropod. 



No. 1. SECTION AT BENNET'S QUARRY. 



By DR. S. T. BARRETT. 



Read Nov. 13th, 1876. 



Port Jervis is situated in the long monoclinal valley lying 

 between the Shawangunk Mountain to the eastward, and 

 low and precipitous ridges of the Hamilton formation to the 

 westward of it. This valley is known here by the name of 

 the Neversink Valley, because that stream, for the last six 

 or seven miles of its course, runs in it. The Delaware River, 

 after flowing through a deeply corraded anaclinal in the 

 Hamilton ridges, crosses the valley at a right angle, impinges 

 against the deeply pitted rocks of the Corniferous Limestone 

 Group, and, bending sharply southwest, passes Tri-States 



