169. Insects of norida. Va. Supplementary Notes on The Water 



Beetles. By W. S. Blatchley, 1919, Bulletin, XLI, Art. 4, pp. 

 305-322. 20c. 



170. A l^evised List of the Diptera of Jamaica. By C. W. Johnson, 1919, 



XLI, Art. 8, pp. 421-449. 30p. 



171. Report of the Bremida Collected by the Crocker Land Expedition, 



1913-1917. By Theodore H. Prison, 1919, Bulletin, XLI, Art. 9, 



pp. 451-459, PI. XXIV, 2 text figures. 20c. 



172. Mollusca of the Crocker Land Expedition to Northeast Greenland 



and Grinnell Land. By Frank Collins Baker, 1919, Bulletin, XLI, 



Art. 11, pp. 479-517, PLs. xxv-xxvii. 50c. 



173. Presh Water Mollusca from Colorado and Alberta. By Prank Collins 



Baker, 1919, Bulletin, XLI, Art. 13, pp. 527-539, 4 text fiRuros. 15c. 



174. Polycha^tous Annelids from Porto Rico, the Plorida Keys, and 



Bermuda. By Ruth A. Hoagland, 1919, Bulletin, XLI, Art. 16, pp. 

 571-591, Pis. xxix-xxxii. 40c. 



175. A New Species of Crab from Japan. By Mary J. Rathbun, 1919, 



BuUetin, XLI, Art. 17, p. 593, PI. xxxiii. 10c. 



176. Bryozoa of the Crocker Land Expedition. By Raymond C. Osburn, 



1919, Bulletin, XLI. Art. 19, pp. 603-624. 20c. 



177. Parasitic Copepods from the Congo Basin. By Charles Branch 



Wilson. 1920, Bulletin, XLIII, Art. 1, pp. 1-8. 2oc. 



178. Tipulidie Collected by the American Museum Congo Expedition. 



By Charles P. Alexander, Ph.D. 1920, BuUetin, XLIII, Art. 2, 



pp. 9-23. 25c. 



179. Neuroptera, Panorpata, and Trichoptera Collected by The American 



Museum Congo Expedition, with Lists of the Species Known 

 from the Belgian Congo. By Nathan Banks. 1920, Bulletin, 

 XLIII, Art. 3, pp. 21-33. , 15c. 



180. African Stone-flies and May-flies Collected by The American 



Maseum Congo Expedition. By James G. Needham, 1920, 

 Bulletin, XLIII, Art. 4, pp. 35-40, PI. v. 15c. 



181. Studies on the Biology of the Aquatic Hydrophilidae. By E. Avery 



Richmond, 1920, Bulletin, XLII, Art. 1, pp. 1-94, Pis. i-xyi. $1.00 



182. Isopods Collected by the American Museum Congo Expedition. By 



Willard G. Van Name, 1920, Bulletin, XLIII. Art. 5, pp. 41-108, 



126 Text Figures. _ 75c. 



183. Lepidoptera of the Congo, Being a Systematic List of the Butterflies 



and Moths Collected by The American Museum of Natural History 

 Congo Expedition, Together With Descriptions of Some Hitherto 

 Undescribed Species. By W. J. Holland, 1920, Bulletin, XLIII, 

 ^ Art. 6, pp. 109-369, 9 text figures, Pis. vi-xiy. $3.00 



184. New Species and Synonymy of American Cvnipida^ Bv Alfred C. 



Kinsey, 1920, Bulletin, XLII, Art. 5, m) 293-317, Pis. xx- 



XX VII. In Press. 



185. Life Histories of American Cynipida) By Alfred C. Kinsey, 1920, 



Bulletin, XLII, Art 6, pp. 319-357, Pis xxviii-xxxi. In Press. 



186. Phylogenv of CjTiipid Genera and Biological Characteristics. By 



Alfred 'C. Kinsey, 1920, Bulletin, XLII, Art. 7, pp. 357a-c, 358- 



402, PI. xxxii. In Press. 



187. Additions to the Ant Fauna of the West Indies and Central America. 



By William M. Mann, 1920, Bulletin, XLII, Art. 8, pp. 403- 



439, 10 test figures. . . I" Press. 



188. Notes on American Lepidoptera with Descriptions of New Varieties. 



By Frank E. Watson and Wm. P. Comstock, 1920, Bulletin, 



XLII, Art. 10, pp. 447-457. In Press. 



189. Some Ncotrpiocal Meliponid Bees. By T.- D. A. Cockerell, 1920, 



Bulletin, Art. 11, pp. 459-468. In Press. 



190. Report on the Ixjpidoptera of the .American Museum Exiiedition to 



Arizona, 1910. By Wm. S. Wright, 1920, Bulletin, XLII, Art. 14. 



pp 4^:^-4't(). In Pre.ss. 



