495 



Onch. 



^ 



Onchus deweyi (if a fish spine ; but Ceratiocaris deweyi^ 

 VbifiBk if the spine of a crustacean). Rogers, p. 824, 

 fig. 639, Salina formation. (Onchus, a genus 

 of Agassiz, Researches sur les poissons fossiles, 

 1837.)— Fc. 



Onchus clintoni, Claypole. Preface to 



Report F2. Geol. Sur. of 



^ Pennsylvania, p. xii, Quar. 



Jour. London Geol. Soc. Dec. 



QJ.GS^XlKp.^l 14^1884, Vol. XLI, page 61.— 



Clinton formation^ Perry Co., Pa. See coprolites 



of perhaps this species (four) marked 50 a-1, in 



Olaypole's collections, 000. — V a. 



Onchus pennsylvanicus, Claypole. Preface 



to Report F2. Geol. Sur. of 



Pennsylvania, p. xii. — Quar. 



Jour. London Geol. Soc. Vol. 



XLI, p. 61. New Bloomiield 



sandstone^ Perry Co., Pa., at 



the top of the Salina shale. A small, fluted 



fish spine, described in the American Naturalist, 



Dec. 1884, p 1222.— 7 c. 



Onchus tenuistriatus. (Agassiz.) Zittel's 



handbuch, 

 Vol. 3, p. 64, 

 fig. 58 (2, a 

 spine from 

 the Ludlow 

 of 

 gland ; to 

 compare with 

 Onchus 



Qj.G5.XLl.p-i/. 



/J .formation 

 J^^^En 



Xittel. 



/0/.3; 



635. nicus of Claypole. 



pennsylva - 



Onychocrinus ramulosus. (Lyon & Casseday.) Collett's 

 Indiana Eeport of 1881, p. 366, pi. 39, figs. 2 and 3, which I 

 have combined with figure of {?. exsculptus on page 495 ; both 

 found at Crawfordsville, Ind. XI. 



