PALEONTOLOGY OF ONTARIO. 129 



52. Favosites hemispherica, Yandell & Shumard (C. & H.) 



53. " turbinata, Billings (C. & H.) 



54. " po^.ymorpha, Ooldfuss (C.) 



55. " reticulata, De Blainville (C.) 



56. " dubia, De Blainville (C.) 



57. " cervicornis, De Blainville (C.) 



58. " Chapmani, Nich. (C.) 



59. Alveolites labiosa, Billings (C.) 



60. " Eoemeri, Billings (C. & H.) 



61. " cryptodens, Billings (C.) 



62. " conferta, Nich. (C.) 



63. " (Coenites ?) distans, Nich. (C.) 



64. " ramulosa, Nich. (C.) 



65. " Billingsi, Nich. (C.) 



66. " Selwynii, Nich. (C.) 



67. " Goldfassi, Billings (H.) 



68. " Fischeri, Billings (C. & H.) 



69. " frondosa, Nich (H.) 



70. Striatopora Linneana, Billings (H.) 



71. Trachypora elegantula, Billings (H.) 



72. Chsetetes moniliformis, Nich. (H.) 



73. " Barrandi, Nich. (H.) 



74. " quadrangularis, Nich. (H.) 



75. Callopora incrassata, NicJi. (C. <fe H.) 



76. Fistulipora Canadensis, Billings (C. & H.) 



77. Michelinia convexa, D' Orbigny (C.) 



III. BRACHIOPODA. 



The number of Brachiopoda in the Devonian Rocks of Western 

 Ontario is very considerable, but good specimens are not obtainable 

 in many parts of the Corniferous Limestone, and our collection of 

 these fossils is not so complete as that of the Corals. On the other 

 hand, the Brachiopods of the Hamilton Formation, though very 

 rarely exhibiting the characters of the interior, usually occixr in a 

 state of beautiful preservation. Altogether, I have identified about 

 forty-three species of Brachiopoda from the Devonian formations of 

 Ontario ; and these are distributed amongst eighteen genera, viz : 

 Strophomena, Streptorhynchus, Orthis, Chonetes, Productella, Spirifera, 

 Gyrtina, Airy pa, Athyris, Leiorhynchus, Spirigera, Retzia, Amphi- 

 genia, Ccelospira, Centronella, Lingida, Pholidops, and Crania. A 

 few of the species (such as Strophomena rhoniboidalis, Spirifera 

 mucronata, and Atrypa reticularis) are well known European forms ; 

 and others are nearly allied to European species, if not absolutely 



