642 MOSQUITOES OF NORTH AMERICA 



Tupper Lake, New York, August (H. G. Dyar) ; Double Beach, Connecticut, 

 July 21, 1904 (P. L. Butrick) ; Shenk's Ferry, Pennsylvania, October 21, 1901 

 (S. B. Weber) ; Plummer's Island, Maryland, June 5, 1903 ("W. V. Warner) ; 

 Great Palls, Maryland, August 9, 1903 (P. C. Pratt) ; Chain Bridge, District 

 of Columbia, August 17, 1914 (H. G. Dyar) ; Difficult Eun, Virginia, August 8, 

 1906 (Knab and Barber) ; Eichmond, Virginia, October 36, 1901 (B. G. Wil- 

 liams) ; Saxeville, Wisconsin, June 3, 4, 20-29, July 8-11, 1909 (B. K. MUler). 

 Eeported also from Maine (Smith). 



AEDES EPACTIUS Dyar & Knab. 



Aedes atropalpus Dyar & Knab (In part), Journ. N. Y. Ent. Soc, xiv, 192, 1906. 

 Aedes epactius IDyar & Knab, Proc. U. S. Nat. Mus., xxxv, 53, 1908. 

 Aedes epaticus Theobald, Mon. Culic, v, 620, 1910. 



Obiginal Desceiption or Aedes epactius: 



Female. — ^Proboscis long and slender, black; palpi entirely black-scaled; vertex of 

 the head anteriorly with broad whitish scales, posteriorly with darker scales; 

 thorax deep brown-scaled, with slight bronzy luster and with whitish markings; 

 these markings consist of two very broad outcurved bands on the anterior half of 

 the mesonotum, which become approximated and narrowed at the middle, and run 

 parallel with each other to the scutellum; the sides of the mesonotum and the hind 

 margin of the scutellum are whitish-scaled; pleura with patches of white scales; 

 abdomen black-scaled above, with rather narrow white basal bands, black and 

 white-banded beneath; the wing-veins are clothed with long and narrow dusky 

 scales; legs black, the knees white, involving both ends of the joints; the front legs 

 with base and apex of the first tarsal joint and the base of the second white-ringed; 

 middle legs with the base and apex of the first tarsal joint narrowly white-ringed, 

 base and apex of the second joint still more narrowly so, the base of the third joint 

 narrowly ringed; hind legs with the last tarsal joint entirely white, the remaining 

 ones broadly white-ringed at base and apex; front and middle tarsal claws toothed, 

 the hind ones simple. Length, 4 mm. 



In the male the palpi are long, but do not attain the apex of the proboscis by about 

 one-fourth its length, sparsely hairy, black-scaled without annulations; the head 

 is densely whitish-scaled; the mesothoracic markings are similar to those of the 

 female, but the white scaling is heavier; the antescutellar bare space is surrounded 

 by white scales, which are poorly Indicated in the female; abdomen black-scaled 

 above, with basal white bands, black and white-banded beneath. Length, 4 mm. 



Ten specimens from C6rdoba, Mexico, and Almoloya, In the State of Oaxaca, 

 Mexico, bred from larvas in holes or hollows in bowlders in stream beds. (F. Knab.) 



Type.— Csit. No. 11963, U. S. N. M. 



This species is closely related to Aedes atropalpus Coquillett, but differs in the 

 coloration of the thoracic markings. 



DESCEiPTioif OF Female, Mat.k, and Lakva op Aedes epactius: 



Female. — Proboscis rather long, slender, cylindrical, uniform, slightly 

 curved, labellse conically tapered; vestiture of black scales, setse very small, 

 curved, black. Palpi short and stout, less than one-fifth the length of the pro- 

 boscis, clothed with black, rough scales; bristles rather long, stout, black. 

 Antennae moderate, the basal joiats rather short, rugose, blackish, setose, second 

 joint longer and stouter than succeeding one, pale brown, hairs of the whorls 

 sparse, black; tori globose, with a cup-shaped apical excavation, brovm, a small 

 patch of pale scales on inner side. Clypeus blackish, prominent, nude, elliptical. 

 Eyes black. Occiput narrow, black, clothed with sordid white scales, a few nar- 

 row curved scales in the middle, the others very broad and flat, a large patch 

 of black ones laterally, some slender, upright, forked dark scales well back on the 

 nape. 



Prothoracic lobes moderate, remote, clothed with whitish scales and rather 

 short dark bristles. Mesonotum black, rather densely clothed with coarse, nar- 

 row, curved scales, a broad median stripe deep bronzy brown, the lateral scales 

 silvery white ; a short brown sublateral stripe on each side near the antescutellar 

 area. Scutellum trilobate, clothed with silvery-white scales, each lobe with a 



