70 



NEW YORK STATE MUSEUM 



Genundewa limestone, 6, 26-27; 



thickness, 26, 27; fossils, 58-59. 

 Gephyroceras sp. ?, 59, 60. 



genundewa, 59. 

 Gilbertsocrinus spinigerus, 52. 

 Gomphoceras absens, 42. 



eximiuin, 42. 



mitriforme> 46. 

 Goniophora acuta, 49, 50, 51. 



hamiltonensis, 54. 

 Gorhani shales, 23, 25. 

 Grabau, cited, 22. 

 Grammysia arcuata, 49, 50, 51, 54. 



bisulcata, 51, 54. 



constricta mut. pygmaea, 57. 



elliptica, 63. 



subarcuata, 63. 

 Grimes sandstone, 6, 34-35; thick- 

 ness, 34; fossils, 63. 

 Gypsum quarries, 7. 

 Gyroceras, 50. 



cyclops, 42. 



laciniosum, 42. 



liratum, 48, 51, 54. 



matheri, 42. 



trivolve, 42. 



undulatum, 42. 



Hall, James, cited, 15, 20, 24, 30, 31. 



Halliella retifera, 52. 



Hamilton beds, 6. 



Hamilton group, term, 17. 



Hartnagel, cited, 9. 



Hatch shale and flags, 6, 33-34; 



thickness, 33; fossils, 62-63. 

 Hederella canadensis, 46. 



cirrhosa, 46. 

 Heliophyllum, 55. 



annulatum, 44. 



cancellatum, 44. 



confluens, 48. 



exiguum, 44. 



halli, 48, 53. 

 var. irregulare, 48. 

 var. reflexum, 48. 



obconicum, 48. 

 Hemitrypa cribosa, 53. 

 Highpoint sandstone, 37-38; thick- 

 ness, 37; fossils, 64. 



Hipparionyx proximus, 41. 

 Homalonotus dekayi, 45, 50, 51, 52, 



54 t 56. 

 Honeoyea desmata, 63. 



erinacea, 61. 



major, 61. 



simplex, 59. 



styliophila, 59. 

 Hydnoceras legatum, 64. 



tuberosum, 36, 64. 



variabile, 36, 64. 

 Hydriodictya cylix, 64. 

 Hyolithus aclis, 49, 51, 52, 54. 



ceratophilus, 42. 



ligea, 42. 



neapolis, 61. 

 Hypothyris, 56. 



cuboides, 25, 56. 



pugnus, 64. 

 Hysteracanthus, 36. 

 Hystricrinus depressus, 65. 



Isochilina ? fabacea, 52. 



lineata, 52. 

 Isotrypa sp. und., 53. 

 Ithaca beds, 6. 



King, cited, 56. 

 Kirkbya parallela, 52. 



Lamellibranchs, 43, 45, 47, 49, 51, 53, 



54, 57, 61. 

 Leda rostellata mut. pygmaea. 57. 

 Leperditia, 40. 



alta, 9, 11, 40. 



cayuga, 42. 



scalaris, 11, 40. 

 Lepidodendron, 34, 58, 63. 



gaspianum, 59, 62. 



primaevum, 59, 62. 

 Leptaena rhomboidalis, 43. 

 Leptocoelia acutiplicata, 43. 

 Leptodesma robustum, 63. 

 Leptodomus multiplex, 62. 

 Leptostrophia mucronata, 35, 63. 



perplana, 43, 46, 48, 49, 50, 51, 53. 

 var. nervosa, 64. 



varistriata, 9. 



