PORTAGE AND CHEMUNG FORMATIONS OF MARYLAND 337 



Camarotoechia sp. On the eastern limb of an anticline whose axis is 

 250 lower, the following species were observed : 



Spirijer pennatiis var. posterns Hall and Clarke 

 Leiorhynchus glohulijorme (Vanuxem) 

 Cyrtina hamiltonensis Hall 

 Schizophoria striatula (Schloth). 



This suggests the Spirijer pennatus var. posterus faunule of the pre- 

 ceding sections. 



Cumberland. — -An excellent section is exposed on the Williams 

 Road about 3^ miles east of Cumberland. The Genesee occurs at the 

 base of the Jennings, above which the Naples fauna was found. The 

 lowest horizon of brachiopods observed contained the following species : 



Spirijer marcyi Hall var. 

 Tropidoleptus carinakis (Conrad) 

 Chonetes scitulus Hall 

 Productella speciosa Hall 

 Camarotoechia sappho Hall ( ?) 

 Leptodesma sp. 

 Orthoceras sp. 



Spirijer mesacostalis was found, apparently at the same horizon, a 

 short distance southwest of this locality. The Spirijer pennatus var. 

 posterus fauna has not been observed in this section. 



Allegany Grove. — The section is exposed in the cuts of the C. P. 

 and G. C. C. R. R., extending from the Winchester road westwards. 

 The lower Jennings is abnormally thin in this section, as is also the 

 Romney. This is probably due to compression in folding. The 

 Naples fauna was found near the base of the section. The following 

 species were observed at the altitudes named, above the base of the 

 Jennings : 



675 feet altitude, Camarotoechia congregata (Conrad) 



850 " " Productella speciosa Hall ( ?) 



850 " " Leiorhynchus mesacostale Hall ( ?) 



850 " " Cyrtina hamiltonensis Hall 



850 " " Pterinea chemungensis Conrad 



1,100 " " Spirijer mesacostalis Hall, abundant 



1,400 " " Spirijer mesacostalis Hall, abundant 



1,600 " " Orthothetes chemungensis (Conrad) 



1,800 " " Stropheodonta (Douvillina) cayuta Hall 



T,8oo " " Orthothetes chemungensis (Conrad) 



