150 BULLETIN 193. UNITED STATES NATIONAL MUSEUM 



Volume 68 



Proceedings of the United States National Museum, vol. 68. Pp. i-xvii (title page, 

 advertisement, table of contents, and list of illustrations) ; arts. 1-2S (Pro- 

 ceedings papers 2602-2626, paged separately). 1927. 



Proc 



No. 



2602. Tertiary insects from Argentina. By T. D. A. Cockerell. Art. 1, pp. 1-5, 



1 fig., 1 pi. Dec. 11, 1925. 



2603. Descriptions of new internal parasites. By Edward A. Chapin. Art. 2, 



pp. 1-4, 4 figs. Nov. 14, 1925. 



2604. Systematic notes on and descriptions of North American wasps of the sub- 



family Brachycistiinae. By J. R. Malloch. Art. 3, pp. 1-28, 4 ph. 

 Feb. 17, 1926. 



2605. Crane flies from the Maritime Province of Siberia. By Charles P. Alex- 



ander. Art. 4, pp. 1-21, 1 pi. Dec. 11, 1925. 



2606. Tertiary insects from Kudia River, Maritime Province, Siberia. By T. D. A. 



Cockerell, Art. 5, pp. 1-16, 5 figs., 2 pis. Dec. 11, 1925. 



2607. Some halictine bees from the Maritime Province of Siberia. By T. D. A. 



Cockerell. Art. 6, pp. 1-12. Dec. 23, 1925. 



2608. Buprestid beetles from the Maritime Province of Siberia. By VV. S. Fisher. 



Art. 7, pp. 1-8. Nov. 28, 1925. 



2609. Sawflies from the Maritime Province of Siberia. By S. A. Rohwer. Art. 8, 



pp. 1-12. Dec. 28, 1925. 



2610. North American species of two-winged flies belonging to the tribe Milto- 



grammini. By Harry W. Allen. Art. 9, pp. 1-106, 2 figs., 5 pis. May 27, 1926. 



2611. Field notes on jjall-inhabiting cynipid wasps with descriptions of new species. 



By Lewis H. Weld. Art. 10, pp. 1-131, 8 pis. May 27, 1926. 



2612. New fossil fresh-water mollusks from Florida. By William B. Marshall. 



Art. 11, pp. 1-4, 1 pi. Feb. 19, 1926. 



2613. A classification of the toothlike fossils, conodonts, with descriptions of 



American Devonian and Mississippian species. By E. O. Ulrich and Ray 

 S. Bassler. Art. 12, pp. 1-63, 5 figs., 11 pis. Mar. 13, 1926. 



2614. Parasitic nematodes from China. By Benjamin Schwartz. Art. 13, pp. 1-10, 



3 figs. Feb. 12, 1926. 



2615. Termites collected on the Mulford Biological Exploration to the Amazon 



Basin, 1921-1922. By Thomas E. Snyder. Art. 14, pp. 1-76, 3 figs., 3 pis. 

 Apr. 26, 1926. 



2616. A new nematode from the rat, and its life history. By Eloise B. Cram. Art. 



15, pp. 1-7, 2 pis. Feb. 19, 1926. 



2617. The Nearctic budworms of the lepidopterous genus Heliothis. By S. E. 



Crumb. Art. 16, pp. 1-8, 1 pi. Feb. 12, 1926. 



2618. The minerals of Obsidian Cliff, Yellowstone National Park, and their origin. 



By William F. Foshag. Art. 17, pp. 1-18, 5 figs., 4 pis. June 14, 1926. 



2619. Revision of the American leaf hoppers of the jassid genus Typhlocyba. By 



W. L. McAtee. Art. 18, pp. 1-47, 6 pis. June 10, 1926. 



2620. A revision of the American lice of the genus Pediculus, together with a 



consideration of the significance of their geographical and host distribution. 

 By H. E. Ewing. Art. 19, pp. 1-30, 8 figs., 3 pis. June 10, 1926. 



2621. A new genus and species of borborid flies from South America. By Mario 



Bezzi. Art. 20, pp. 1-6, 2 figs. May 13, 1926. 



2622. New genera and species of acalyptrate flies in the United States National 



Museum. By J. R. Malloch. Art. 21, pp. 1-35, 2 pis. May 29, 1926, 



2623. Descriptions of new West Indian longicorn beetles of the subfamily Lamiinae. 



By Warren S. Fisher. Art. 22, pp. 1-40. June 10, 1926. 



2624. North American two-winged flies of the genus Cylindromyia Meigen (Ocyptera 



of authors). By J. M. Aldrich. Art. 23, pp. 1-27, 1 pi. May 29, 1926. 



2625. A collection of Pleistocene vertebrates from southwestern Texas. By Oliver P. 



Hay. Art. 24, pp. 1-18, 2 figs., 8 pis. June 7, 1926. 



