108 BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 



VOLUME XXI, CONTAINI]!fG PAPERS 1140-1178. 



Smithsonian Institution. I United States National Museum. I 



Proceedings | of the | United States National Museum. | | 



Volume XXI. | | Published under the direction of the Smith- 

 sonian Institution. | | Washington: | Government Printing 



Office. I 1899. 



8vo., pp. xiii, 1-983, 89 pis., 106 flgs. 



P. lliO. Contributions toward a monograph of the lepidopterous fam- 

 ily Noctuidse of boreal North America. A revision of the spe- 

 cies of Aeronycta Ochsenheimer, and of certain allied genera. 

 B}" John B. Smith and Harrison G. Dyar. 



pp. 1-194, 22 pis. 



P. 114:1. Descriptions of the species of Cycadeoidea, or fossil cycadean 

 trunks, thus far determined from the lower cretaceous rim 

 of the Black Hills. By Lester F. Ward. 



pp. 195-229. 



P. 114:2. On some new parasitic insects of the subfamily Encyrtinse. 

 By L. O. Howard. 



pp. 231-248. 



P. 1143. On the coleopterous insects of Galapagos Islands. By Mar- 

 tin L. Linell. 



pp. 249-268. 



P. 1144. The birds of the Kuril Islands. By Leonhard Stejneger. 



pp. 269-296. 



P. 1145. Description of a species of Actaeon from the quaternary 

 bluffs at Spanish Bight, San Diego, California. By Robert 

 E. C. Stearns. 



pp. 297-299, 1 flg. 



P. 1146. Report on a collection of Japanese diptera, presented to the 

 U. S. National Museum by the Imperial University of 

 Tokyo. By D. W . Coquillett. 



pp. 301-340. 



P. 1147. Notes on the mammals of the Catskill Mountains, New York, 

 with general remarks on the fauna and flora of the region. 

 By Edgar A. Mearns. 



pp. 341-360, 6 flgs. 



P. 1148. Topaz crystals in the mineral collection of the U. S. National 

 Museum. By Arthur S. Eakle. 



pp. 361-369, 22 flgs. 



P. 1149. Notes on Oythcrea {Tivela) crassatelloides Conrad, with 

 descriptions of many varieties. By Robert E. C. Stearns. 



pp. 371-378, 3 pis. 



P. 1150. On the occurrence of Amphiuma, the so-called Congo snake, 

 in Virginia. By Hugh M. Smith. 



pp. 379-380. 



