550 



PROCEEDINGS OF THE ALBUQUERQUE MEETING 



Pelecipoda : 



13. Panenka canadensis Whiteaves ; rare in the Lucas. 



14. Pterinea bradti Grabau manusci-ipt ; a low, long-winged type common in tiie ss:, 



15. Goniophora sp. 



16. Oonocaidium monroense Grabau manuscript ; less common than In the lower 



beds. 



17. Modiella 1 sp. 



Gastropoda : 



18. Hormotoma siibcarinata Grabau manuscript; abundantly represented. 



19. H. tricarinata Grabau manuscript ; a derivative of the preceding, with an addi- 



tional carina. 



20. Coelidium ? miniitum Hall ; doubtfully identified. 



21. Coelidium exteniiatum Hall ; ? doubtfully identified. 



22. Loxonema parxa Grabau manuscript ; a small species. 



23. Holopea suhconica Hall ; common in salt shaft. 



24. Polcumita cf. crenulata Clarke and Rued. ; of the type of the Guelph form. 



25. PleurotrocUus hicai hiatus Grabau manuscript, gen. et sp. ; type similar to the 



strongly spinose "Murchisonia" of the Upper Siluric of Gotland, of which 

 several are referred to this genus. 



26. Acanthonema holopiformis Grabau manuscript ; a short, close-coiled form with 



two nodose spirals ; common. 



27. A. Iiolopiformis var. ohsoleta .Grabau manuscript, with middle spiral non-nodose, 



obsolete. 



28. Acanthonema laxa Grabau manuscript; longer and more loosely coiled; common. 



29. Acanthonema newberryi (Meek) {Orthonenia newhen-yi Meek), described as oc- 



curring in the Devonic. 



30. Pleuronotus suiangiilatus Grabau manuscript; recalls strikingly the Devonic 



P. decewi. 



31. Euomphalus cf. fairchihli Clarke and Ruedemann ; rare in ss. 



32. Eotomaria aveyi Clarke and Ruedemann ; fairly abundant. 



33. Eotomaria galtensis (Bill.) ; characteristic and not uncommon. 



34. EttomphaJoptenis cf. Valeria (Bill.) ; a characteristic fragment from the ss. 



Cephalopods : 



35. Orthoceras (Protokionoceras) cf. triisititin ; several 

 characteristic features of this Siluric species. 



fragments showing the 



H. The fauna of the Bullhead or Akron dolomite of tcestern New York- 

 Tbis was origiually described by Grabau, but some revision is necessary.' 



Anthozoa : 



1. Cyathophyllum ( ?) hydrauUcum Simpson ; common. 



2. Favosites sp. 



Beachiopoda : 



3. Schuchertella interstriata (Hall) ; an abundant and characteristic form. 



4. Spirifer eriensis Grabau. 



5. Whitfieldeila sulcata (Vanuxem). 



6. Whitfieldella subsiilcata Grabau manuscript (Whitfieldella cf. levis (Whltf.) 



Grabau). 



7. Whitfieldella sp. {Whitfieldella cf. rotitmJata (Whit.) Grabau). 



8. A. rhynchonelloid. 



Gastropoda : 



9. Loxonema ? sp. 



10. Pleurotomaria ? sp. 



' The name Akron dolomite is derived from its exposure in the village of Akron, In 

 Erie county, New York. It is approximately equivalent to the Cobleskill of the East. 



