198 Journal New York Entomological Society. [ Voi. xv. 



C. Gorgas of the Isthmian Canal Commission and through the courtesy 

 of the Department of Agriculture especially to investigate the mosqui- 

 toes of that region. We are especially indebted to Dr. Herman Can- 

 field of the Department of Sanitation of the Canal Zone, through 

 whose initiative and interest the present investigation has resulted. A 

 full list of the species collected will be made by Mr. Busck. Only 

 the new ones are referred to here. 



Anopheles gorgasi, new species. 



Palpi as long as the proboscis, mostly black scaled, the terminal and penultimate 

 joints light scaled except at the bases and apices ; mesothorax gray, with fine brown 

 scales, a black spot in front of the scutellum, a pair of sublateral black spots medially ; 

 wings with the veins scaled in black and white, two very large black patches on the 

 costa and a smaller one towards the base and a smaller one at the apex as in A. albi- 

 vianus Wied. The rest of the wing is too much denuded to describe. Abdomen 

 with groups of outstanding scales laterally at the apices of the segments, the dorsum 

 clothed with yellow scales on a dark ground, the lateral tufts black. Legs mostly 

 black-scaled, hind legs with the apical half of the second, the third, and the base of 

 the fourth joints white scaled, the remainder of the fourth and basal half of the fifth 

 segments black, the third joint with a large black patch on the under side which 

 reaches from near the base to beyond the middle. I^ength, 3.5 mm. 



One female, in poor condition. La Boca, Canal Zone, Panama 

 (A. H. Jennings, collector). 



Type. — No. 10863, U. S. National Museum. 



Named, at the suggestion of Mr. August Busck, in honor of Dr. 

 W. C. Gorgas, Assistant Surgeon-General, U. S. Army, Chief Sani- 

 tary Officer of the Isthmian Canal Commission. 



Anopheles malefactor, new species. 



9 • — Palpi long, clothed with brown scales and black outstanding ones, which 

 are grouped more or less in tufts, heaviest on the basal portion, a slight sprinkling of 

 lighter scales among the brown ones, particularly at the bases of the dark tufts ; occi- 

 put black scaled, the eyes margined with white above and where they join is a tuft of 

 white hairs ; mesonotum gray with reddish and bluish tinge and small dark freckles 

 tending to form longitudinal rows, sparsely distributed narrow yellowish scales, a 

 black spot at the base extending over the middle of the scutellum and two small sub- 

 lateral black spots medially, all three of these show a lighter margin ; abdomen 

 slender, gray, with lateral tufts of outstanding black scales at the apices of the seg- 

 ments ; legs with the femora and tibise black freckled with white, on the hind tibiae 

 yellow scales predominate ; tarsi black, ringed with yellowish white ; on the hind legs 

 the first tarsal joint is dark at the base, light at the apex and has six white rings of 

 different lengths, second joint narrowly white at base, broadly so at apex, with a 

 moderately broad white ring near the middle and another narrower one between it 

 and the base, third and fourth joints white ringed at base and apex with a broad cen- 

 tral white ring, apical segment entirely whitish scaled ; wing spotted, black and white, 



