546 NEW YORK STATE MUSEUM 



3363 iflj^n TYPE Hall. Illustrations of Devonian fossils. 1876. 

 Gasteropoda, pi. 1 6, fig. 23. 



Hall. Paleontology of New York. 1879. v. 5, pt 2, 

 pi. 16, fig. 23. 



Hamilton shales York N. Y. 



C. A. White and C. Van Deloo, coll. 1860 



Phanerotinus laxus Hall 



.3364 I - 1 HYPOTYPE Euomphalus laxus Hall. Descriptions 

 of new species of fossils from the Upper Helderberg, 

 Hamilton and Chemung groups. 1861. p. 26. 



Ecculiomphalus comes Hall. Illustrations of 

 Devonian fossils. 1876. Gasteropoda, pi. 16, fig. 8. 



Euomphalus (Phanerotinus) laxus Hall. 



Paleontology of New York. 1879. v. 5, pt 2, pi. 16, fig. 8. 



Hamilton shales Bellona N. Y. 



C. A. White and C. Van Deloo, coll. 1860 



3365 mp-i. HYPOTYPE Hall. Illustrations of Devonian fossils. 1876. 

 Gasteropoda, pi. 16, fig. 17. 



Hall. Paleontology of New York. 1879. v. 5, pt 2, 

 pi. 16, fig. 17. 



Onondaga limestone Schoharie N. Y. 



PLATYCERAS Conrad 

 Platyceras argo Hall 



.3366 -LaiQ-fi. TYPE Platyceras argo Hall. Descriptions of new 

 species of fossils from the Upper Helderberg, Hamilton 

 and Chemung groups. 1861. p. n. 



Hall. Illustrations of Devonian fossils. 1876. Gaster- 

 opoda, pi. 8, fig. 1-3. 



Hall. Paleontology of New York. 1879. v. 5, pt 2, 

 pi. 8, fig. 1-3. 



Onondaga limestone Williamsville, Erie co. N. Y. 



Platyceras attenuatum see Platyceras (Orthony- 

 chia) attenuatum 



Platyceras (Orthonychia) attenuatum Hall 



-15367 ipi TYPE Platyceras attenuatum Hall. Descrip- 

 tions of new species of fossils from the Upper Helderberg, 

 Hamilton and Chemung groups. 1861. p. 2. 



