~>o 



44. Lriorhynchus mtsacostalis. Middle Portage, eastward. 



45. Cyriina hamiltoncnsu. Middle Portage and Chemung, 



eastward, and Hamilton shales 



46. Productclla spcciosa. Middle Portage and Chemung. 

 47-S. Proditctella truncata " " " lower beds. 



49. Stropheodonta mucronata. Middle Portage, eastward. 



50. Ckonctes scifula. Portage and Chemung, locally very 



abundant. 



51. Crypionrtla eudoia. Middle, east Portage, rare in Che- 



mung. 

 52-3. Schizophoria impressa (both valves, interior casts). Mid- 

 dle, east Portage and e. and w. Chemung. 



54. Atrypa reticularis. East Portage and east Cnenuing. Very 



abundant in Hamilton beds below. 



55. Lingula complanata. Middle Portage shale. 



56. Crania hamiltonice (showing muscular scars). Middle eaist 



Portage and below. 



57. The same; showing traces of Stropheodonta mucronata 



through the shell. 



58. Lingula punctata. Middle east Portage (and Chemung?). 



Explanation ok Plato VIII. 

 (Portage fossils of various classes.) 



Fier. 



?v 



59. Conularia congregata. Middle, east Portage. APteropod. 



Regarded by some as a Cephalopod, 



60. Stictopora meeki. Portage. A Bryozoan. 



61. Cladoclionus &p. Lower Portage sandstone. A coralline 



form. 



62. Plumalina pinmaria. Middle to lower Portage, eastward. 



A Hydrozoau. Sometimes regarded as a fern. 



63. Phacops rana. Lower and middle Portage, eastward, rarely 



in Chemung. Abundant in Hamilton beds. A Trilobate. 



