90 Forty-second Annual Report on the 



160. Note on the Genus Palsoaster, with descriptions of some new 



species, and observations upon those previously described. 

 Ibid., pp. 282-303, 1 plate. 



161. Account of some new or little-known Species of Fossils from 



Rocks of the age of the Niagara Group (originally printed in 

 advance for the 18th Report in the New York State Cabinet, 

 1864). Ibid., pp. 305-401, 15 plates. 



162. * Observations on the Genus Streptorhynchus. Ibid., p. 241. 



163. * Observations on the Genus Strophodonta. Ibid., p. 241. 



164. * On the Genera Pentamerus and Stricklandinia; and their sup- 



posed relations with Rensselseria. Ibid., p. 273. 



165. * On the Genera Terebraluta, Centronella, Cryptonella, etc. Ibid., 



p. 279. 



166. * Descriptions of some new species of Crinoidea, and other fossils 



from the Lower Silurian strata, principally of the age of the 

 Hudson River Group. Ibid., p. 304. 



167. * Descriptions of Bryozoa and Corals from the Lower Helderberg 



Group of New York. Ibid., p. 304 (published in 26th Report, 

 1874). 



168. * Descriptions of Bryozoa, etc., from the Upper Helderberg and 



Hamilton Groups of New York. Ibid., p. 304 (published in 

 Trans. Alb. Inst., 1882). 



169. * Miscellaneous Notices. Ibid., p. 304. 



170. * On the Geological Relations of the Mastodon and Fossil Ele- 



phant. (See 21st Report on the State Cabinet of Natural 

 History, Albany, 1871.) Am. Assoc. Ad. Sci., 16th meeting, 

 Burlington, 1867; p. 161. Cambridge, 1868. 8vo. 



171. * On* the Geographical Distribution of the Sediments and of the 



Fossils in the Hamilton, Portage and Chemung Groups of 

 New York. Ibid., p. 161. 



172. * On the Value of the term Hudson River Group in Geological 



Nomenclature. (See also for printed notes Proceedings Nash- 

 ville meeting, Am. Assoc. Ad. Sci., 1877.) Ibid., p. 161. 



173. * On the Occurrence of Fossil Sponges in the Successive Groups 



of the Palaeozoic Series. Ibid., p. 161. 



174. Geological History of the North American Continent; a lecture 



delivered before the American Institute in New York; p. 24. 

 Albany, 1869. 8vo. 



175. * Preliminary Notice of the Lamellibranchiata of the Upper Hel- 



derberg, Hamilton and Chemung groups. Proc. A. A. Sci, 

 18th meeting, Salem, 1869; p. 282. Cambridge, 1870. 8vo, 



