Clarke — Oneonta, Ithaca and Portage Gtrotjps. 



35 



aperture ; in some specimens a considerable portion of the apertural part of 

 the body whorl is smooth. 



Cyclonema multiUra' (ohsoletum f ). 



D, fifteen feet above, affords an exposure of two to three feet of flags 

 with : 



St/ropheodowta demissa, large and fine examples of the characteristic Che- 

 mung form with finely divided plications, obliquely undulated cardinal slopes 

 and extended cardinal extremities. 



Atrypa reticularis, as above; common. 



Schizophoria impressa, with ventral valve highly arcuate. 



Productella speciosa: 



Actinopteria eta. 



Cryptonella. 



E, at the summit of the hill, twenty feet above, contains: 

 Atrypa reticularis, as above. 



Liorhynchus globularis. The original specimens of this species of Van- 

 uxem's seem to have come from Otsego county. I am not aware that the 

 species has been recorded in faunas of whose Chemung age there is no 

 question. 



Tentaculites spiculits. 



This is a repetition, with some important additions, of the fauna pre- 

 viously made out by me in these rocks. The top of the hill lies about 300 

 feet above the Chenango river and the rock section here given is, thus, through 

 150 feet, approximately. 



Cowles Hill. (Figure 2.) The section at the Cameron quarry, in this 

 hill, has been referred to as Station L of my preKminary paper. Mr. F. H. 

 Williams has examined the entire section from this old quarry, mentioned by 

 Vanuxem in his report of the Third district (1842), and which lies near the 

 base of the hill, upward to its summit, an interval of about 350 feet. Cowles 

 hill lies in the southwest portion of the village of Greene and about one-half 

 mile due south of Juliand hill. 



1. The Cameron quarry, approximately 100 feet above the Chenango 

 river. Here, at the base, are ten feet of compact sandstones, with a concre- 

 tionary layer near the top, and above, in the same exposure, forty Eeet of 

 arenaceous shales. 



The fossils collected are : 



Tentaculites spicukts. Vanuxem refers to the abundance of Tentaculites 

 at this spot. 



