SOME NEW AMERICAN MOSQUITOES 73 



ventral tufts of the head contain respectively six and four hairs. Some of 

 dorsally, though some scattered bristles are also present on the last ter- 

 gites ; hairs on eighth and ninth short, straight, and golden. 



Wings 2.75 mm., 2.5 the standard, 0.65 nun. broad; first marginal 

 cell tw^o-sevenths of wing, four times as long as its petiole, narrower, 

 longer, and nearer base than the second posterior one ; cross veins sepa- 

 rated by about twice the length of the posterior one. Scales broad on 

 outer parts of third vein and forks of second and fourth, with outstanding 

 narrower ones ; no broad scales on sixth ; color dark with bronzy luster, 

 base of wings light. Halteres light at the basal, black on the apical half. 



Legs entirely dark with coppery luster, shining somewhat lighter be- 

 neath ; hind femora largely whitish beneath, especially at base ; first and 

 second femora only a little lightened near base, but shining lighter along 

 the whole ventral line ; spiny dark bristles on femur and especially at 

 tibia ; raised scales at knees ; claws equal and simple ; femora I < II < III, 

 the first hind tarsal longer than its tibia. 



Male. — Proboscis 1.9 mm., brown, as if jointed beyond middle and 

 there and at tip a little swollen, entirely dark. Palpi short, about one- 

 sixth the length of proboscis (in side view). Antennae a little more than 

 one-half the length of proboscis, plumose, white and black ringed ; last 

 two joints with white pubescence. Thorax 1 mm., v^ngs 2.5 ; abdomen 

 hardly longer than standard ; greenish colors darker and more obvious, 

 vestiture rougher ; forks shorter ; femora more whitish beneath, claws 1:1, 

 1:1,0:0. 



That this species is not yet known from Panama is obvious from the 

 key in Howard, Dyar, and Knab, where among the Culex with very 

 short male palpi conservator only has no basal abdominal spots, but is 

 easily separated by its narrower wing-scales. The blunt tip of abdomen 

 and the absence of post-tibial scraper put our form into Culex H. D. & K. 



On the other hand, we find in Peryassu's paper Lutz's description of 

 Aedinus amazonensis, which apparently comes very near our form, if it 

 is a Culex at all, for the data in that paper do not allow us to deter- 

 mine its position. 



The main points of difference are : the greenish, not ochraceous, color 

 my species exhibits in side view ; the shorter palpi in the male (not on 

 sixth) and female ; the absence of black narrow curved scales from the 

 occiput ; the four long bristles, instead of three, on the lateral lobes of the 

 scutellum ; and the bronzy, not bluish, luster of the dorsum of the abdo- 



