48 



NEW YORK STATE MUSEUM 



Ortbotbetes arctostriatus Hall. 

 Siropbeodonta concava Hall 



S. demissa Conrad 



S. inequistriata Conrad 



Fliolidostrophia nacrea Hall. . . . 

 Leptostropliia perplana Conrad 

 Clionetes coronatus Conrad.... 

 C. deflectus Hall 

 Productella navicella Hall 

 P. spinulicosta Hall 



Spirifer angustus Hall 



S. divaricatus Hall 



S. fiinbriatus Conrad 



S. andaculus Conrad 



S. mucrouatus Conrad 

 S. consobrinus d'Orbigny 

 Ambocoelia uinbonata Conrad. . 



Nucleospira concinna Hall 



Trematospira birsuta Hall 



Meristella baskinsi Hall 



Atrypa reticularis Linne 

 Camarotoecbia dotis Hall 



C, borsfordi Hall 



C. prolifica Hall 

 C. sappbo Hall 



Pentamerella pavilionensis Hall 

 Cryptonella planirostris Hall 

 C. reetirostris Hall 



c 

 cc 



Crinoids 



Platycrinus eboraceus Hall r 



Megistocrinus Ontario Hall r 



Corals 



Zapbrentis balli Edwards & 

 Haime c 



Z. simplex Hall 



Cystipbyllum varians Hall 



C. conifollis Hall 



C. americanum Edwards & 

 Haime cc 



Cyatbopbyllum robustum Hall. . . c 



C. nanum Hall 



G. conatum Hall c 



Amplexus bamiltoniae Hall 

 Heliophylhim balli Edwards d 



Haime cc 



H. balli var. irregulare Hall c 



H. balli var. reflexuui Hall 



11. obconicum Hall 



H. confluens Hall r 



Favosites placenta Rominger . . . . cc 

 F. arbiiscuhis Hall 



F. argus Hall c 



Alveolites goldfnssi Billings c 



Pleurodictyum stylopora Eaton 

 Striatopora limbata Eaton c 



Canandaigua shales proper 



The beds above the " basal limestones ? ' as thev were originally 

 termed by the writer, carry a less profuse fauna. The species 

 assembled in the following list are from more numerous outcrops 

 than the foregoing but, save at the very top of the formation just 

 beneath the Tichenor limestone, they are seldom if ever as abund- 

 ant in any single locality. There are some noteworthy differ- 

 ences in the composition of the faunas of these two parts of the 

 Oanandaigua beds, which are below singled out in special lists. 

 The fossils herein are : 



Cru8tace ans 

 Phacops rana Green 

 Dalmanites bootbi Green 

 Proetus macrocepbalus Hall 

 Ostracodes of the genera 

 Beyrichia, Entomis, Primitia 



Bollia in the lower sbales. cc 

 Estberia pulex Clarke r 



Worms 

 Spirorbis angulatus Hall 

 Cephalopods 

 Ortboceras exile Hall 



O. nuntium Hall c 



O. crotalns //(/// r 



Gyroceras liratum //'/// 

 Tornoceras uniangulare Conrad. . r 

 Bactrites l(Mmicinctus Hall 



