354 Forty-second Report on the State Museum. 



In the same year (1832) Prof. Amos Eaton described the species 

 Nuttainia sparsa (=Homalonotus Dekayi, Green), and Asaphus 

 (= Dahnanites) seleniums (Geological Text-book). In the Annual 

 Keports of the Palseontological Department of the New York 

 State Geological Survey, Mr. T. A. Conrad, in 1840 and 1841, 

 described the species Odontocephalus selenurus (Eaton sp.) and 

 Asaphus (= Dalmanites) aspectans. From this date onward to the 

 year 1861, brief notices of American Devonian Trilobites were 

 published by various writers, viz.: 



Burmeister, Emmons, Owen, Vanuxem. 



Castelnau, Hall, Shumard, 



In 1861, Professor James Hall published (Descriptions of New 

 Species of Fossils from the Upper Helderberg, Hamilton and 

 Chemung groups ; in advance sheets of the Fifteenth Annual 

 Report of the New York State Cabinet of Natural History) a 

 brief revision of the previously described Devonian Trilobites 

 from the State of New York, with the addition of several new 

 species. The following species were discussed : 



-Dalmanites) anchiops, 



Calymene platys, Green. 

 Homalomotus Dekayi, Green. 

 Phacops cristata, Hall. 

 Phacops bombifrons, Hall (—Ph. 



cristata, partim). 

 Phacops rana, Green. 

 Phacops bufo, Green. 

 Phacops Cacapona, Hall. 

 Phacops nupera, Hall (1843). 

 Dalmania (=Dalmanites) concinna, 



Hall. 



Dalmania Helena, Hall (=Dalma- 



nites aspectans, Conrad). 

 Dalmania (=Dalmanites) myrmeco- 



phorus, Green. 

 Dalmania (=Dalmanites) emargi- 



nata, Hall. 

 Dalmania (^Dalmanites) Pleione, 



Hall. 



Dalmania (^Dalmanites) Boothii, 

 Green. 



Dalmania (=Dalmanites) selenurus, 

 Eaton. 



Dalmania (= Dalmanites) bifida, 

 Hall. 



Dalmania (^Dalmanites) JEgeria, 

 Hall. 



Dalmania (^Dalmanites) coronata, 

 Hall. 



(^Dalmanites) Erina, 

 (^Dalmanites) macrops, 



Dalmania (= 

 Green. 



Dalmania (=Dalmanites) anchiops, 



var. armata, Hall. 

 Dalmania (=Dalmanites) Calypso, 



Hall. 

 Dalmania 



Hall. 

 Dalmania 



Hall. 

 Lichas grandis, Hall. 

 Lichas armatus, Hall (=L. Eriopis, 



Hall). 

 Proetus Conradi, Hall. 

 Proetas angustifrons, Hall. 

 Proetus Hesione, Hall. 

 Proetus crassimarginatus, Hall. 

 Proetas clarus, Hall. 

 Proetus canaliculatus, Hall. 

 Proetus Verneuili, Hall. 

 Proetus Haklemani, Hall. 

 Proetus macrocephalus, Hall. 

 Proetus marginalia, Conrad. 

 Proetus Rowii, Green. 

 Proetus longicaudus, Hall. 

 Proetus occideus, Hall. 



