134 Dyar and Knob New Species of Mosquitoes. 



form small black patches at cell, on cross- veins and at bases of forked cells ; 

 abdomen black with narrow whitish basal segmental bands, whitish 

 scaled ventrally. Legs black, the femora pale at base and with a white 

 ring before tip ; tibiae with a line of white scales on each side ; hind tarsal 

 joints banded with white at base nearly to middle. 



1 cT, 4 9 , Stanford University, California, March, June 23, 1903 (Miss 

 MacCracken) ; Eureka, Cal., June 8 (H. S. Barber) ; San Francisco, Cal., 

 July 4, 1906 (Miss Ludlow). 



Type Cat. No. 9961, U. S. Nat. Mus. 



Culiseta dugesi sp. nov. 



Proboscis black with a few white scales ; thorax with two brown stripes, 

 the vestiture yellowish over black. Wings with brown stains in the mem 

 brane where the scales form small black patches on cell, on cross-vein and 

 at bases of forked cells ; abdomen black with narrow white basal seg- 

 niental bands, whitish scaled ventrally. Legs black, sprinkled with whit 

 ish scales, the femora pale at base with a white ring before the tip; tibiae 

 with a line of white scales on each side ; hind tarsal joints banded with 

 white at base for less than one-fourth their length. 



5 9 , Guanajuato, Mexico, January 20, 1905 (A. Duges) ; Mexico City, 

 Mex., October 2(5, 1900 (S. Arara). 



Type. Cat. No. 9962, U. S. Nat. Mus. 



GENUS JANTHINOSOMA LYNCH-ARRIBALZAGA. 

 Janthinosoma vanhalli sp. nov. 



Hind legs with outstanding scales ; thorax golden yellow scaled above ; 

 no blue spot on the last two abdominal segments below ; else as in J. sayi 

 Dyar & Knab. 



7 specimens, Paramaribo, Surinam (Dr. Van Hall, through U. S. Dept. 

 Agriculture). 



Type. Cat. No. 9967, U. S. Nat. Mus. 



Janthinosoma champerico sp. nov. 



Hind legs with raised scales ; last two joints of hind tarsi white ; ab 

 domen all yellow scaled below ; else as in J. lutz'd Theobald. 

 One specimen, Champerico, Guatemala (F. Knab). 

 Type. Cat. No. 9968, U. S. Nat. Mus. 



Janthinosoma coffin! sp. nov. 



Hind legs without raised scales ; tarsi without pale basal bands ; penul 

 timate joint of hind tarsi white, the last dark ; thorax all yellow scaled 

 above ; tips of mid and hind femora dusky. Agrees with the description 

 of /. varipes Coquillett, but a careful examination of the types of that 

 species shows there to be dark scales on the center of the thorax and that 

 it is a synonym of J. discrucians Walker, as identified by Coquillett. 



8 specimens, Nassau, Bahamas, B. W. I., June 22, 1903 (T. H. Coffin). 

 Type. Cat. No. 9969, U. S. Nat. Mus. 



