360 Forty-second Report on the State Museum. 



Of the Phyllopoda, the species : 



Estheriapulex. I ScJiizodiscus capsa. 



Of the Cirripedia : 



Strobilepis spinigera. 

 Turrilepas Devonicus. 

 Turrilepas squama. 



Turr ilepa s nitid u I us . 

 Turrilepas foliatus. 

 Turrilepas tener. 



Of these forty species, twenty-nine occur within the limits of 

 this State. 



Tully Limestone. 

 Trilobite remains only have been found in this formation, and 

 these are, with one exception, the more common species of the 

 underlying shales. 



Bronteus Tullius. 

 Phacops rana. 



Dalmanites (Cryphceus) Boothi. 



Dalmanites (Cryphoeus) Boothi, var. 



Calliteles. 

 Proetus Rowi. 

 Proetus macrocephalus. 



Genesee Shales. 



These bituminous beds have produced but a single Crustacean, 

 Geratiocaris longicauda. 



Portage Group. 

 Under this designation, as used in this work, are included all 

 the shales and sandstones lying between the Genesee slate below 

 and the lowest sandstones bearing a typical Chemung fauna. 

 These beds and their equivalents in other States have produced 

 no Trilobites, their Crustacean fossils being mostly Phyllocarida. 

 They are : 



Echinocaris multinodosa. 

 Mesothyra Oceani. 

 Sjia th iocaris Em ersoni. 

 Dipterocaris pennce-Dcedali. 

 Dipterocaris pes-cervcB. 

 PakeopalcEmon Newberry i. 



Stylonurus ? (Echinocaris ??) Wrigltt- 



ianus. 

 Ceratiocaris Beecheri. 

 Ceratiocaris simplex. 

 Echinocaris WJiitfieldi. 

 Echinocaris sublcevis. 

 Echinocaris ztustulosa. 



Chemung Group. 



In the sandstones of this period the Trilobites are represented 



by two species, Phacops nupera* and Gyphaspis Icevis ; the 



Protolimuhis Eriensis; the Eurypter- 



; the Phyllocarida, by : 



Tropidocaris interrupta. 

 Dipterocaris Procne. 



Xiphosura, by the species 

 IDA, by Eurypterus Beecheri 



Echinocaris condylepis. 

 Ecldnocaris socialis. 

 Elymocaris siliqua. 

 Tropidocaris bicarinata. 



Dipterocaris pes-cervce. 



* See page 27, volume VII Palaeontology of New York. 



