BIBLIOGRAPHY OF PALASOZOIC CRUSTACEKA 71 
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Amphion canadensis Bill. Ceraurus pompilius Bill. C. hudsoni n. sp. Pseudosphaer- 
exochus vulcanus Bill, P. vulcanus var. Billingst n. var. P. approximus n. sp., P. 
Chazyensis n. sp. P. (Nieszkowskia) satyrus Bill. Sphaerocorphe Goodnovi n. sp. 
Sphaerexochus parvus Bill. Dalmanites (Pterygometopus) annulatus n. sp. 
Seven genera—Thaleops, Proetus, Glaphurus, Cybele, Sphaerocorphe, Sphaerexochus 
and Pterygometopus—make their first appearance in American faunas in the Chazy 
formation. 
Three, Bathyurellus, Glaphurus and Amphion, are not found in formations above 
the Chazy. 
Most of the genera found in the Trenton are represented in the Chazy. 
——— The fauna of the Chazy Limestone. 
Amer. Jour. Sci., vol. 20, 1905, pp. 353-382. 
Leperditia limatula n. sp. 
The new generic name of Heliomera is used for Cheirurus sol Billings, as the type. 
——— Trilobites of the Chazy Formation in Vermont. 
7th Report of the State Geologist, 1909-1910, Bellows Falls, Vt. 1910, pp. 213-248, 
plates 32-40. 
This paper was published in Ann, Carnegie Mus., vol. 3, No. 2, 1905; but this 
article has all been reconstructed and important additions have been made. 
The subgenus Vogdesia, on p. 225, has been given a generic name with /sotelus 
bearsi as the type. 
Nileus vigilans Meek and Worthen, as figured in Palwont. Minnesota, vol, 3, part 
2, p. 712, figs. 17-19, the author compares with Nileus Perkinsi, which differs prin- 
cipally in respect to the eyes, which are much larger and further back on the cephalon 
in N. Perkinsi. 
The species illustrated and described are: 
Foharpes antiquatus Bill. E. ottawaensis Bill. Lonchodomas halli Bill. Remopleuri- 
des canadensis Bill. Bathyurus angelini Bill. Bathyurellus brevispinus Raym., B. 
minor Raym.  Basilicus marginalis Hall. Vogdesia bearsi Raym.  Onchometopus 
obtusus Hall. TIsotelus harrisi Raym., I, platymarginatus Raym. Isotelus beta Raym. 
Bumastus limbatus Raym, TIsoteloides augusticaudus Raym. Thaleops arctura Hall. 
Bumastus globosus Bill, B. erastusi Raym. Ilaenus punctatus Raym. Proetus clelandi 
Raym. <Amphilichas minganensis Bill. Glaphurus pustulatus Wale. Cybele prima 
Raym. Pliomerops canadensis Bill. Ceraurus pompilius Bill, C. hudsoni Raym. 
Pseudosphaerexochus vulcanus Bill, P. vulcanus billingsi Raym., P. approximus Raym., 
P. chazyensis Raym. Nieszkowskia satyrus Bill. Sphaerexochus parvus Bill. 8. good- 
novi Raym. Pterygometopus annulatus Raym. Isotelus harrisi Raym., I. platymar- 
ginatus Raym. Basilicus marginalis Hall. Ceratocephala narrawayt Raym. Heliomera 
sol. Bill. Nieszkowskia or Pseudosphaerenochus, 
—_—— (Qn two new. Trilobites from the Chazy near Ottawa. 
The Ottawa Naturalist, vol. 24, Nov., 1910. 
The author describes Bathyurus superbus n. sp. closely related to Bathyurus extans 
Hall, but larger. 
Tyotelus arenicola n. sp. 
This species is more closely allied, to Isotelus gigas, but this species has no genal 
spines like the new species. 
——— Notes on Ordovician Trilobites, I]. Asaphidae from the Beek- 
mantown, 
Ann. Carnegie Museum, vol. 7, No. 1, 1910, pp. 36-44, plate 14. 
The author places a new genus under the family Asaphidae (Isoteloides). In this 
