132 BULLETIN 193, UNITED STATES NATIONAL MUSEUM 



Proc 

 No. 



2179. The variation exhibited by Thamnoph'xs ordinoides (Baird and Girard), a gar- 



ter snake inhabiting the San Francisco Peninsula. By Joseph C. Thompson. 

 Pp. 345-366. Mar. 7, 1917. 



2180. Trophodiscus, a new sea star from Kamchatka. By Waher K. Fisher. Pp. 



367-371, 3 pis. Mar. 7, 1917. 



2181. New Tertiary insects. By T. D. A. Cockerell. Pp. 373-384, 1 pi. Feb. 23, 1917. 



2182. New species of South Dakota Cretaceous crabs. By Mary J. Rathbun. Pp. 



385-391, 2 pis. Feb, 23, 1917. 



2183. Diagnoses of new species of marine bivalve mollusks from the northwest 



coast of America in the collection of the United States National Museum. 

 By William Healey Dall. Pp. 393-417. Dec. 27, 1916. 



2184. A new find of meteoric stones near Plainview, Hale County, Texas. By George 



P. Merrill. Pp. 419-422, 2 pis. Mar. 7, 1917. 



2185. Description of a new goby, Garmannta spongicola, from North Carolina. By 



Lewis Radcliffe. Pp. 423-425, 1 fig. Feb. 8, 1917. 



2186. A new species of polychaetous annelid from Panama, with notes on an 



Hawaiian form. By Aaron L. Treadwell. Pp. 427-430, 5 figs. Feb. 8, 1917. 



2187. Notice of a new Paleocene mammal, a possible relative of the titanotheres. By 



James Williams Gidley. Pp. 431-435, 1 fig., 1 pi. Feb. 23, 1917. 



2188. Mammals collected by Dr. W. L. Abbott on the chain of islands lying oflF the 



western coast of Sumatra, with descriptions of twenty-eight new species 

 and subspecies. By Marcus Ward Lyon, Jr. Pp. 437-462. Dec. 30, 1916. 



2189. New species of fossil beetles from Florissant, Colorado. By H. F. Wickham. 



Pp. 463-472, 3 pis. Feb. 23, 1917. 



2190. Rotatoria of Los Angeles, California, and vicinity, with descriptions of a new 



species. By Frank J. Myers. Pp. 473-478, 2 pis. Feb. 23, 1917. 



2191. On certain secondary sexual characters in the male ruddy duck, Erismatura 



jamaicensis (Gmelin). By Alexander Wetmore. Pp. 479-482, 1 fig. Feb. 

 8, 1917. 



2192. Notes on the life history and ecology of the dragonflies (Odonata) of central 



California and Nevada. By Clarence Hamilton Kennedy. Pp. 483-635, 404 

 figs. May 12, 1917. 



2193. Descriptions of new west American marine mollusks and notes on previously 



described forms. By Paul Bartsch. Pp. 637-681, 6 pis. May 29, 1917. 



Volume 53 



Proceedings of the United States National Museum, vol. 53. Pp. i-xi (title page, 

 advertisement, table of contents, and list of illustrations) ; Pp. 1-659 (Proceed- 

 ings papers 2194-2222) ; pp. 661-669 (index) ; 154 figs., 79 pis. 1917. 



2194. North American parasitic copepods belonging to the Lernaeidae with a revision 



of the entire family. By Charles Branch Wilson. Pp. 1-150, 4 figs., 21 pis. 

 June 13, 1917. 



2195. Descriptions of thirty-one new species of Hyraenoptera. By S. A. Rohwer. Pp. 



151-176, 1 fig. June S, 1917. 



2196. Some effects of environment and habit on captive lions. By N. Hollister. Pp. 



177-193, 2 figs., 4 pis. June 1, 1917. 



2197. Descriptions of some new parasitic Hymenoptera. By A. B. Gahan. Pp. 195- 



217. May 26, 1917. 



2198. Description of a new species of mastodon, Gomphotherium elegans, from the 



Pleistocene of Kansas. By Oliver P. Hay. Pp. 219-221, 1 pi. June 1, 1917. 



2199. Gomphus parvidens, a new species of dragonfly from Maryland. By Bertha P. 



Currie. Pp. 223-226, 2 pis. June 1, 1917. 



2200. A remarkable occurrence of calclte in silicified wood. By Edgar T. Wherry. 



Pp. 227-230, 3 pis. June 1, 1917. 



2201. An asymmetrical bird-louse found on ihree different species of troupials. By 



John Howard Paine. Pp. 231-232, 1 pi. June 1, 1917. 



