240 



NEW YORK STATE MUSEUM 



Dalhousie beds, 7—52 ; Dr Ami responsible 

 for term, 10; illus., 16; shore section of, 



43- 



Dalhousie channel, 153, 154. 161. 

 Dalhousie fauna, 6, 9, 89-90, 127-28, 132- 



34; range and distribution, 13—15; Hel- 



derberg in its constitution, 17; affinity 



with Coblentzian, 17: description of 



species, 18-51. 

 Dalmanella cf. circularis, 61, 88, go. 

 explanation of plate, 208. 



concinna, 133, 151, 



drevermanni, 125, 128. 

 explanation of plate, 2 28. 



perelegans, 133, 145-46, 151. 



planoconvexa, 88, 133, 145, 151. 



quadrans, 133, 151. 



subcarinata, 133, 151. 

 Dalmanites, ij, 57. 



sp-, 65. 6 7, 89, 132, 147. 

 explanation of plate, igo. 



bisignatus, 66, 147. 



coxius, 156. 



dentatus, 66, 136, 140, 147. 

 zone, age of fauna, 136. 



dolbeli, 66. 



emarginatus, 138, 147. 

 explanation of plate, 230. 



lunatus, 156. 



cf. micrurus, 13, 18, 66, 96, 127. 

 explanation of plate, 168, 210. 



phacoptyx, 66, 147. 



pleuroptyx, 58, 61, 62, 63, 65, 66, 67, 89, 



132. t47- 



explanation of plate, igo. 

 ploratus, 63, 65, 66, 89. 



explanation of plate, igo. 

 (Synphoria) stemmatus, 1 \~. 

 var. ci hi vergens, 147. 

 Dana, cited, 161. 

 I lartori, N. H,. cited, T29. 

 Davidson, Thomas, cited, 44, 121. 

 Davis, W. M., cited, 130. 



Dawson, J. W., cited, 7-9, 57, 155. 

 Devoni< , early, in eastern New York, 129- 



62. 

 Devonic faunas, of Somerset, Piscataquis 



and Penobscot counties, Maine, 52-90 



of the Chapman Plantation, 91-128. 

 Diaphorostoma desmatum, 63, 65, 68, 89, 

 148. 



nearpassi, 148. 



pastillus, 140, 148. 



explanation of plate, 230. 



ventricosum, 62, 63, 65, 68, 89, 148. 

 Dictyonema cf. splendens, 15, 50, 153. 

 Diphyphvllum, 9. 

 Discina ampla, 126. 



grandis, 126. 

 Ditichia, 64. 



doto, see Nuculites (Ditichia) doto 



cf. elliptica, 78, 8g. 



explanation of plate, 198. 



mira, 78. 



securis, see Nuculana (Ditichia) securis. 

 Drevermann, F., assistance from, 93; 



work of, 115; acknowledgments to, 118; 



cited, 106, 108 ; mentioned, 123. 

 Duncan, cited, 50, 51. 

 Duncanella rudis, 134, 152. 



Eatonia medialis, 132, 150. 



peculiaris, 132, 150. 



singularis, 132, 150. 



sinuata, 150. 



whitfieldi, 150. 

 Edmondia? sp.. explanation of plate, 17S. 

 Edmunds Hill, 92, 94, 95, 96, 97, 98, 99, 



101, 102, 103, 104, 105, 107, 10S, in, 



112, 115, 118, iig, 120, 122, 123, 124, 



125, 126, 127-28. 

 Edriocrinus becraftensis, 152. 



sacculus, 152. 

 Ells, R. W., cited, 10. 

 Emerson, B. K., cited, 157. 

 Enterolasma strictum, 134, 152. 



