AQUATIC INSECTS IX NEW YORK STATE ■ 389 



Picalbi, E. (1899) Venti specie di Zanzare. Soc. Ent Italiana Bui. 



(1806) Rev. slstematica d. fam. delle Culcidae Europee. Soc. Ent. 



Ital. Bui. 



This contains an extensive bibliography. 

 Giles, G. M. (1900) Gnats, or Jlosquitoes; a compilation of the descrip- 

 tions of the mosquitoes of the world. 

 Howard, L. 0. (1900) V. S. Dep't Agric. Cir. 40, ser.2 

 ■ (1900) U. S. Dep't Agric. Div. Ent. Bui. 2.5, n. s. 



(1901) Mosquitoes. McClure, Phillips & Co. 



This gives the most complete account we have of the biology o£ mosquitos. 

 Meinert, F. (1886) De eucephale Myggelarver. in Vidensli. Selsk. Skr., 6. 



Eaeklie, naturvidensk. og math. Afd. 3.4. 

 Contains about 60 quarto pages and two plates on' the biology and structure of the 

 CulicicJae. 

 Nuttall & Shipley (1901) Structure and Biology of Anopheles. Jour, of 



Hygiene, 1:75. 

 Osten Sacken, C. R. (1868) Am. Ent. Soc. Trans. 2:47, and Western Dip- 



tera, p.l91 (1877) 

 Smith, J. B. (1902) Ent. News. 13:268 and 299. 



(1902) N. Y. Ent. Soc. Jour. 10:10. 



Theobald, F. V. (1901) Monograph of the Culioidae. 2v. 



With atlas of 37 colored and 5 photographic plates. 

 "Weissmann, A. (1866) Die Metamorphose der Corethra pluml- 

 c o r nl s . 



Also papers in the reports of the various state experiment stations, by Lugger, 

 Osborn, Herrick, and others. 



The mosquitos are small to medium sized flies, characterized 

 by the projecting proboscis (sometimes lobed) and by the plu- 

 mose antennae of the male. The head is small, round; eyes 

 reniform, and ocelli are wanting. The antennae are threadlike, 

 composed of 15 joints, counting the disklike base; the first 

 joint is thick, the following joints small, round and beset with 

 whorls of hairs, forming in the male a long, dense plumosity; 

 the last two joints in the male are slender and bare, or nearly 

 so. The thorax is ovate, arched, but not projecting over the 

 head, without transverse suture, scutellum narrow; metanotum 

 arched. Abdomen long and narrow, somewhat flattened, com- 

 posed of eight segments; male genitalia prominent, ovipositor 

 short, legs long and slender, the coxae not elongatedi; the tarsi 

 long. Wings long and narrow, with numerous veins; the hind 

 margin fringed, the costal vein extending all around the wing, 

 and iii all known Aiuerican forms the veins are covered with 

 scales. Venation as in the figures. 



The larvae are known as " wrigglers." The head is fully 

 differentiated and usually has eyes; the mouth is usually thickly 



