[ami] outliers of the OTTAWA PALAEOZOIC BASIN 1S3 



of the Otttiwa Valley above L'Orignal. Other brachiopoda which are 

 eminently characteristic are these : — Jjiiujula Belli, Billings, Orthis (JTe- 

 bertell(i) borealis, Bill., 0. imperator, Bill. ; then Cyrtodonta breviuscula, 

 Bill., Modiolojysis parriiisrida, Bill., amongst the lamellibranchiata ; Col- 

 umnaria incerta, Billings, representing the corals ; whilst Bolboporites 

 Americanus, Billings, Blastoidocrinus carcharUt'dens. Bill., Palœocystites 

 tenuiradiatus, Hall, Malocystites MurcMsoni, Bill., and M. Barrandei, 

 Bill., characterize the echinoderms of this age. Bathyurus catidatus, 

 Bill., B. Angelini, Bill., IsochiUna Ottawa, Jones, Prioniodas radicans, 

 Hinde, and Serpulites, a species related to S. splendens, Billings, have 

 also been I'ecorded from the Uttawa Valley Chazy. 



The Bird's Eye and Black Eiyer Formation. 



The most interesting and best preserved fossils from the Bird's Eye 

 and Black River formation in the OttaAva Valley are those lecorded 

 from the limestones of Paquette's Eapids, the Bonnechère Eiver above 

 Eganville, and from the Petite Chaudière above Ottawa. PVom these 

 outliers Messrs. E. Billings and J. W. Salter obtained the large amount of 

 material, from which they described the species to be found in the Can. 

 Org. Rem., Dec. I., III. and IV.. and the Palœozoic Fossils, vol. I. 



Upwards of ninety species of fossils are recorded from the Black 

 Eiver formation of Paquette's Rapids alone. The following are among the 

 most characteristic : — Receptaculites occidentalis, Salter, Stromatocerium 

 rugosum. Hall, Tetradium fibratum, Saflfbrd, Calapcecia Canadensis, Bill., 

 Columnaria HalU, Nicholson. StrejHelasma profundum. Hall, Petraia 

 uperta, Billings, Porambonites Ottawaensis, Bill., Solenopora compacta, v. 

 Paqaettiana, nobis, Eichwaldia subtrlgonalis, Bill., Camarella Yolborthi, 

 Bill, C. Panderi, Bill., Dinobolus magnifieus, Bill., Modiolopsis Nais. Bill., 

 Otenodonta astartd'formis, Bill., C. gibberula, Salter, C. Logani, Salter, 

 Conocardium immaturum, Billings, Cyrtodonta spinifera, Bill., C. Leucothea^ 

 Bill,. Loxonema Murrayanum, Salter, Straparollina asperostriata. Bill., S. 

 Circe, Bill., S. Eurydice, B., Holopea Nereis, Billings, H. Pyrene, Billino-s 

 CyclonemaMallianum, Salter. Euneina cerithioides, Salter, E. strigillatum 

 Salter. Solenospira pagoda, Salter, Helicotoma plamdata, Salter, H. lar- 

 vata, Salter, Raphistoma lajncidum, Salter, B. apertum, Salter, Eotomaria 

 Bryope, Bill., Liospiira Vitruvia, Bill., Plethospira ? Arachne, Bill., Orno- 

 spira Alexandra, Bill., Lophospira helicteres, Salter, E. serrulata, Salter, 

 Chiton Canadensis, Bill., Alet Optoma Erato, Billings, Scenella superba, B., 

 Bellerophon Charon, B., Oxydiscus Argo, B., Maclurea Logani, Salter, Ac- 

 tinoceras Allumettense, Bill., Actinoceras Bigsbyi, Bronn. ,Orthoceras Ulinea- 

 tum. Hall, 0. laqueatum, Hall, 0. strigatum. Hall, 0. arcuoUratum, Hall, 0. 

 hastatum, Billings, 0. tenerum, Billings, Oncoceras constrictum. Hall, 

 Cyrtoceras Billingsi, Salter, C. falx, Billings, C. regulare. Bill., Cyrtocerina 



