116 BULLETIN 193, UNITED STATES NATIONAL MUSEUM 



Proc. 

 No. 



1811. Descriptions of a new genus and species of isopod crustacean of the family 



Idotheidae from the mouth of the Rio de la Plata, Argentina, South 

 America. By Harriet Richardson. Pp. 169-171, 5 figs. Apr. 10, 1911. 



1812. Descriptions of six new genera and thirty-one new species of ichneumon 



flies. By H. L. Viereck. Pp. 173-196. Apr. 17, 1911. 



1813. Final supplement of the catalogue of the published writings of Charles 



Abiathar White, 1897-1908. By Timothy W. Stanton. Pp. 197-199. Apr. 

 10, 1911. 



1814. Notes upon two rare flatfishes {Gymnachirus fasciatus Giinther and G. 



nudus Kaup). By W. C. Kendall. Pp. 201-203, 2 figs. Apr. 10, 1911. 



1815. Descriptions of tineoid moths (Microlepidoptera) from South America. By 



August Busck. Pp. 205-230, 2 pis. Apr. 13, 1911. 



1816. An electric ray and its young from the west coast of Florida. By Barton A. 



Bean and Alfred C. Weed. Pp. 231-232, 2 pis. Apr. 13, 1911. 



1817. A new trematode (Styphlodora bascaniensis) with a blind Laurer's canal. 



By Joseph Goldberger. Pp. 233-239, 3 figs. Apr. 11, 1911. 



1818. Bees in the collection of the United States National Museum. 2. By T. D. A. 



Cockerel!. Pp. 241-264. Apr. 11, 1911. 



1819. The Hoffman Philip Abyssinian ethnological collection. By Walter Hough. 



Pp. 265-276, 23 pis. May 18, 1911. 



1820. New species of shells from Bermuda. By William Healey Dall and Paul 



Bartsch. Pp. 277-288, 1 pi. May 8, 1911. 



1821. A revision of several genera of gymnospermous plants from the Potomac 



group in Maryland and Virginia. By Edward W. Berry. Pp. 289-318. 

 May 8, 1911. 



1822. [Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 



1907-10. — No. 9.] Descriptions of three new fishes of the family Chaetodon- 

 tidae from the Philippine Islands. By Hugh M. Smith and Lewis Rad- 

 cliffe. Pp. 319-326, 3 figs. Apr. 17, 1911. 



1823. The Recent and fossil mollusks of the genus Cerithiopsis from the west 



coast of America. By Paul Bartsch. Pp. 327-367, 6 pis. May 8, 1911. 



1824. Notes on the genus Lepomis. By Barton A. Bean and Alfred C. Weed. Pp. 



369-376, 9 pis. May 6, 1911. 



1825. Remarks on the long-tailed shrews of the eastern United States, with de- 



scription of a new species. By N. Hollister. Pp. 377-381. Apr. 17, 1911. 



1826. The Recent and fossil mollusks of the genus Bittium from the west coast 



of America. By Paul Bartsch. Pp. 383-414, 8 pis. May 12, 1911. 



1827. [Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 



1907-10. — No. 10.] New genera of starfishes from the Philippine Islands. 

 By Walter K. Fisher. Pp. 415-427. May 17, 1911. 



1828. Two amphibians, one of them new, from the Carboniferous of Illinois. By 



Roy L. Moodie. Pp. 429-433, 2 figs. May 8, 1911. 



1829. New mollusks of the genus Aclis from the North Atlantic. By Paul Bartsch. 



Pp. 435-438, 1 pi. May 18, 1911. 



1830. Descriptions of new Hymenoptera. 2. By J. C. Crawford. Pp. 439-449. 



May 12, 1911. 



1831. New tropical millipeds of the order Merocheta, with an example of kinetic 



evolution. By O. F. Cook. Pp. 451-473, 10 figs., 1 pi. May 31, 1911. 



1832. Descriptions of one new genus and eight new species of ichneumon-flies. 



By H. L. Viereck. Pp. 475-480. Apr. 17, 1911. 



1833. On the supposed origin of the moldavites and like sporadic glasses from 



various sources. By George P. Merrill. Pp. 481-486, 2 pis. May 31, 1911. 



1834. Notes on insects of the order Strepsiptera, with descriptions of new species. 



By W. Dwight Pierce. Pp. 487-511. May 17, 1911. 



1835. The relation of bornite and chalcocite in the copper ores of the Virgilina 



district of North Carolina and Virginia. By Francis Baker Laney. Pp. 

 513-524, 1 fig., 7 pis. 



