210 PALEONTOLOGY OF THE EUBEKA DISTRICT. 



Dalmanites (nndt. sp.). 



At Comb's Peak a small and very perfect glabella of a species of Dal- 

 manites was found. It is quite distinct from the associated Dalmanites Meeki, 

 as the surface is finely granulose with larger granules irregularly inter- 

 spersed ; the determination of its specific relations is left until more material 

 can be obtained. 



Genus PEOETUS Steininger. 

 Froetus Haldemani Hall. 



Proetus Haldemani Hall, 1861. Descriptions of New Species of Fossils, etc., p. 74. 



Haldemani Hall, 1862. Fifteenth Ann. Kep. N. Y. State Cab. Nat. Hist., p. 102. 



Haldemani Hall, 1876. Pal. N. Y., Illustrations of Devonian Fossils, Desc. 

 pi. xxi, tigs. 7, 8, 9. 



Of this species the glabella and pygidium were alone obtained. The 

 glabella varies from that of Proetus Haldemani in being more compressed 

 and the pygidium in having one or two less annulations in the median lobe; 

 otherwise they appear to be identical. 



Formation and locality. Devonian limestone, Rescue Hill, west side of 

 Rescue Canon, Eureka District, Nevada. 



Proetus margiiialis Conrad (Sp.). 



Calymene marginalis (?) Conrad, 1839. Ann. Eep. Pal. N. Y., p. 66. 



Proetus marginalis Hall, 1861. Descriptions of New Species of Fossils, etc., p. 76. 



marginalis Hall, 1862. Fifteenth Ann. Rep. N. Y. State Cab. Nat. Hist., p. 104. 



marginalis Hall, 1876. Pal. N. Y., Illustrations of Devonian Fossils, Crustacea, 

 pi. xxi, figs. 24-28. 



We fail to discover, on a direct comparison of specimens of Proetus 

 marginalis, from the Tully limestone of New York and entire specimens 

 from Comb's Peak, any characters that would warrant the separation of 

 the latter as a distinct species. The most prominent variation is in the 

 width and outline of the border of the head, but on examining the figures 

 given by Professor Hall, on plate xxi (Illustrations of Devonian Fossils), 

 quite as wide a variation is shown between figs. .25 and 26 as between indi- 

 viduals from New York and Nevada. Continuing the comparison with 



