67 



AULO. 



Aulopora^vanclevii. Collett. Indiana Report of 1882, page 



255, plate 4, fig. 

 1, (Van Cleve) 

 a large colony; 

 shows compact 

 and scattered 



I'M ^.^ forms of growth. 

 "^ ' Fig. 2, several 



Ina.l8#^ 



tubes, much 

 magni'fied. Ni- 

 agara forma- 

 tion in Indiana 

 and Kentucky. 

 A, serpens is a 

 ^1 - much 1 ar ger 

 P •'^' species, but 

 quite similar to this in the mode of its growth, and moreover 

 lived in later Devonian times. — F5. 



Avicula acanthoptera. Hall, page 263, fig. 118, 2. (Com- 

 pare Phillips' Pal. Foss. XXIII, fig. 

 Vlll.a^^^^^^^^p^ 90, 91, 92. — Avicula damnoniensis^ 

 :^m^mii^^mg Sowerby, Geol. Tra'ns. [2] LIII, fig. 



22.) VIII g. Chemung formation. 

 This beautiful shell, from Phillips- 

 burgh, N. Y., has a sharp hind wing. 



Avicula bellistriata, reported by J. C. White from the 

 Hamilton shales under Tully limestone, on Little Fishing 

 creek ; G7, p. 75.— VIII c. 



Avicula carinata. See Pterinea carinata^ Conrad, and 

 Ambonychia radiata. Hall. Emmons, Amer. Geol. I, ii, p. 175, 

 plate 17, fig. 23. Found in Canada, New York, Ohio and south- 

 west Virginia, in Loraine (Hudson river) shales; "the most 

 characteristic fossil of the upper part of the Lower Silurian 

 system." /// J. See Appendex, 



Avicula chemu7igensis. See Pteronites chemungensis. 

 Vlllg. 



Avicula damnoniensis. See Pteronites chemungensis. 

 Vlllg. 



Avicula decussata. See Pteronites decussatus. VIII c. 



