922 MOSQUITOES OF NORTH AMERICA 



Bubcylindrical, straight, about five times as long as wide ; pecten of few, small, 

 evenly spaced teeth, followed by a large tuft before middle ; pecten teeth short, 

 flat deeply serrate scales. Lateral comb of eighth segment a row of six scales on 

 posterior margin of a very large lateral plate ; single scales thorn-shaped, with a 

 slight lateral fringe of spinules. Anal segment much longer than wide, ringed 

 by the plate which has a row of spines along posterior edge ; dorsal tufts of three 

 hairs on each side; a small lateral tuft; ventral brush of few sparse branches, 

 confined to the small barred area ; anal gills short, about as long as the segment, 

 tapered. 



Theobald quotes Dr. Lutz as saying that he found the larvse associated with 

 the larvffi of Anopheles, which they much resemble. According to him the 

 females bite severely by day, but seem not especially inclined to do so. Mr. 

 Urich found the larvas in a small puddle in a drain covered with green algae. 

 He says that the larvae at first sight reminded him of Anopheles argyritarsis. 

 They were colored green, no doubt from feeding on the algse. The Eev. Dr. 

 Aiken found the larvae in a pool, associated with Uranotcenia pulcherrima and 

 Uranotcenia rowlandii. Mr. Busck found the larvge in a pool of a clear, cold, 

 mountain brook. He says the larvae look curiously like an Anopheles larva, 

 but are furnished with a long tube. Mr. Jennings found the larvae in a swampy 

 pond with sedgy edges and tufts of grass. Mr. Knab took them in a water-hole 

 between boulders in the stream-bed of the river San Antonio above the reach of 

 ordinary high water. The pool was full of algae. The larvae, when disturbed, 

 descended into the dense mass of algae and remained there a long time. The 

 pupae also remained below for a long time; in spite of their long breathing 

 trumpets they did not become entangled in the algae. They were associated 

 with larvge of Anopheles argyritarsis. 



Tropical America, exclusive of the Antilles. 



Cordoba, Mexico, February 5, 1908 (F. Knab) ; Panama City, Panama (A. 

 I. Kendall) ; Empire, Canal Zone, Panama, May 7, 1907 (A. Busck) ; Gatun, 

 Canal Zone, Panama, June 8, 1907 (A. Busck) ; Culebra, Canal Zone, Panama, 

 July 23, 1907 (A. Busck) ; Taboga Island, Panama (A. H. Jennings) ; Colon, 

 Panama (A. H. Jennings) ; East La Boca, Canal Zone, Panama, November 12, 

 1907 (A. H. Jennings) ; Forty Mile Camp, Pedro Miguel, Canal Zone, Panama, 

 November 20, 1907 (A. H. Jennings) ; Trinidad, West Indies (F. W. Urich) ; 

 Stanley Town, British Guiana, September 18, 1905 (E. D. Eowland) . Keported 

 also from Santos and the city of Sao Paulo ; Juiz de Fora and Oliveira, both in 

 the State of Minas Geraes; Manaos, State of Amazonas, Brazil (Peryassii) ; 

 Buenos Aires, Argentina (Brethes). 



Uranotcenia geometrica varies locally in the amount of white marking on the 

 hind tarsi. In the Mexican specimens there is only the extreme tip of the third 

 joint white ; three females from Mexico have a black spot on the fourth tarsal 

 joint towards its base. The color of the metallic scales varies in different speci- 

 mens from a brilliant violet blue to a greenish blue. 



URANOTiENIA CALOSOMATA Dyar & Knab. 



Uranotcenia calosomata Dyar & Knab, Journ. N. Y. Ent. Sec, xv, 200, 1907. 

 Uranotcenia calosomata Busck, Smiths. Misc. Colls., quart, iss., lii, 61, 1908. 

 Uranotcenia calosomata Theobald, Mon. Culic, v, 518, 1910. 



Original Description of Uranot^nia calosomata: 



Proboscis moderately long and slender, slightly enlarged apically; clypeus and 

 tori dull brown; occiput brown scaled with two oblique lines of white scales, which 

 converge upon the vertex and terminate in a white tuft; thorax deep brown, on the 



