70 



NEW YORK STATE MUSEUM 



Genundewa limestone, 6, 26-27; 



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

 Gepbyroceras sp. ?, 59, 60. 



genundewa, 59. 

 Gilbertsocrinus spinigerus, 52. 

 Gomphoceras absens, 42. 



eximium, 42. 



mitriformej 46. 

 Goniopbora acuta, 49, 50, 51. 



bamiltonensis, 54. 

 Gorbam sbales, 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. irregular e, 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^ 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 sjh tmd., 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, oJ 

 vm\ nervosa, 64. 



vari striata, 9. 



