590 MOSQUITOES OF NORTH AMERICA 



side, reticulate ; a rather large terminal articulate spine. Harpes flat, concave, 

 inner margin thickened and revolute, curved over at tip, denticulate, the apex 

 slightly cleft. Harpagones with a narrow ligulate base, apex triangularly 

 widened and bearing seven large smooth setae. Unci approximate, forming a 

 blunt-tipped cone, the margins strongly revolute and approximate medially. 



Larva, Stage IV (plate 115, fig. 392). Head transverse, rounded, widest 

 through eyes ; antennas moderate, stout, nearly uniform, spinose, a rather small 

 hair-tuft at middle; dorsal head-haii-s in multiple tufts. Lateral abdominal 

 hairs in sevens on first two segments, in twos on third to fifth segments, single 

 on sixth. Lateral comb of eighth segment of six scales on a weak chitinous 

 plate, each scale with spmules at angles and a long central spine. Air-tube in- 

 flated, fusiform, over three times as long as the basal diameter; pecten of four 

 or five well separated teeth, a small hair-tuft at outer third. Anal segment 

 longer than broad, ringed by a chitinous band ; dorsal tuft a long hair and a tuft 

 on each side; lateral tuft small; ventral brush well developed, running along 

 ventral line nearly to base. Anal gills long, slender, tapering. 



The larvae live in temporary ground-puddles. Mr. Knab found them in cattle 

 tracks in a marshy lane, in a rain-puddle in woods, in a large puddle in an old 

 Indian village, in a roadside pool, in a ditch of foul water, in a large puddle 

 which dried up very soon, in a muddy road, in a ditch by railroad tracks, and in 

 a puddle in a stream -bed. Although abundant, no specimens were taken at- 

 tempting to bite. 



Southern Mexico to Texas. 



Santa Lucrecia, State of Vera Cruz, Mexico, June 20, 1905 (F. Knab) ; 

 Hacienda La Oaxaquena, near Santa Lucrecia, Mexico, September, 1911 (F. 

 W. Urich) ; Eincon Antonio, Oaxaca, Mexico, June 24, 1905 (F. Knab) ; 

 Tehuantepec, Mexico, June 30, 1905 (F. Knab) ; Salina Cruz, Mexico, July 

 7, 1905 (F. Knab) ; Almoloya, Mexico, July 21, 1905 (F. Knab) ; Vera Cruz, 

 Mexico, August, 1902 (G. E. Beyer) ; Dallas, Texas, September 14, 1905, and 

 October 3, 1907 (W. E. Hinds, R. A. Cushman). 



PSOROPHORA COLUMBIA (Dyar & Knab). 



Gulex perturians Howard (not Walker), U. S. Dept. Agr., Div. Ent., Bull. 4, n. s., 



22, 1896. 

 Gulex perturbans Howard (in part, not Walker), U. S. Dept. Agr., Div. Ent., Bull. 25, 



n. s., 20, 30, 1900. 

 Gulex perturbans Coquillett (not Walker), U. S. Dept. Agr., Div. Ent., Circ. 40, 2 Ser., 



6, 1900. 

 Gulex perturbans Howard (not Walker), Mosquitoes, 238, 1901. 

 Gulex confinis Herrick (not Arribdlzaga), Miss. Agr. Exp. Stat., Bull. 74, 17, 1901. 

 Gulex confinis Dyar (not ArribS-lzaga), Journ. N. Y. Ent. Soc, ix, 179, 1901. 

 Gulex confinis Smith (not ArribSlzaga), Ent. News, xiii, 300, pi. xv, fig. 7, 1902. 

 Gulex confinis Dyar (not Arribaizaga), Proc. Ent. Soc. Wash., v, 51, 1902. 

 Gulex jamaicensis Dyar (not Theobald), Proc. Ent. Soc. Wash., v, 146, pi ii, fig. 9, 



1903. 

 Gulex jamaicensis Smith (not Theobald), N. J. Agr. Exp. Stat., Bull. 171, 37, 1904. 

 Grabhamia jamaicensis Herrick (not Theobald), Ent. News, xv, 81, 1904. 

 Gulex jamaicensis Felt (not Theobald) , Bull. 79, N. Y. State Mus., 298, 1904. 

 Gulex confinis Felt (in part, not Arribalzaga), Bull. 79, N. Y. State Mus., 302, 1904. 

 Gulex confinis Blanchard (in part, not Arribalzaga), Les Moustiques, 297, 1905. 

 Gulex jamaicensis Smith (not Theobald), N. J. Agr. Exp. Sta., Kept, Mosq., 186, 1905. 

 Grabhamia jamaicensis Felt (not Theobald), Bull. 97, N. Y. State Mus., 472, 1905. 

 Janthinosoma jamaicensis Dyar & Knab (in part), Journ. N. Y. Ent. Soc, xiv, 183, 



1906. 

 Grabhamia jamaicensis Coquillett (not Theobald), U. S. Dept. Agr., Bur. Ent., Tech. 



Ser. 11, 21, 1906. 

 Grabhamia jamaicensis Dyar (not Theobald), U. S. Dept. Agr., Bur, Ent., Circular 



72, 3, 1906. 

 Janthinosoma columbice Dyar & Knab, Proc, Biol. Soc. Wash., xix, 135, 1906. 



