CULEX STENOLEPIS 249 



WiBgs moderate, hyaline ; petiole of second marginal cell less than one-fourth 

 as long as its cell, that of second posterior cell shorter than its cell ; basal cross- 

 vein more than its own length distant from anterior cross-vein; scales brown, 

 those on costa darker with a bronzy luster, the outstanding ones moderately 

 dense, ovate, denser apically. 



Legs moderate, the femora whitish beneath nearly to tip ; knees broadly silvery 

 white ; tibiae and tarsi brown with a bluish reflection ; hind tarsi white-ringed at 

 both ends of joints, the rings broad, last joint entirely silvery white; front and 

 mid tarsi unhanded. Claw formula, 0.0-0.0-0.0. 



Length : Body about 3 mm. ; wing 3 mm. 



The larvae live probably normally in water in tree-holes. Mr. Jennings bred 

 a specimen from pools in rocks along the course of a stream in a forest. The 

 pools contained dead leaves, flower-petals, etc. Many larvae of Anopheles eiseni 

 were associated, and also an undescribed species of Oulex of which only a single 

 male was bred. 



Panama and Nicaragua. 



Caldera Island, Porto Bello Bay, Panama, larvae in rock-pools along the 

 stream supplying the reservoir. May 29, 1908 (A. H. Jennings) ; Bluefields, 

 Nicaragua (P. W. Thornton) ; Panama ( ). 



We have only a single breeding record for Culex iceniopus, and that from a 

 rock-pool, but infer it to be a tree-hole inhabiting form from ttie fact that it was 

 associated with Anopheles eiseni. It may, of course, be not confined to such 

 locations. 



CULEX STENOLEPIS Dyar & Enab. 



Oulex stenolepis Dyar £ Knab, Proc. TJ. S. Nat. Mus., xxxv, 60, 1908. 

 Culex stenolepus Theobald, Mon. Culic, v, 616, 1910. 



OBIOIN^AI, DESCBIPTIOIf OP CUM;X BTEI70I.EFIS : 



Female. — Proboscis rather long and slender, black-scaled, labellse pale-scaled; 

 palpi entirely black-scaled; occiput clothed with pale brownish scales, with brassy 

 luster, the margin of the eyes narrowly white-scaled, broadened into a patch at the 

 ^ sides, numerous erect forked scales particularly basally; mesonotum deep brown- 

 scaled, with bronzy luster and mottled with patches of brassy scales; these scales are 

 most conspicuous along the margins and form two oblique subdorsal bars; anteriorly 

 they form a dorsal patch and are also abundant around the antescutellar bare space 

 and the bases of the wings; scutellum covered with brassy scales; abdomen de- 

 pressed, truncate at the tip, dull black-scaled above, -with narrow white basal seg- 

 mental bands; beneath the basal bands occupy about half of each segment; wings 

 with the veins clothed with brownish long and very narrow scales; legs black; femora 

 white-scaled beneath except the apical portion; knees white-scaled; tibise with their 

 apices pale-scaled, a line of pale scales along their inner surfaces; tarsi of all the 

 legs white-ringed at base and apex of each joint, the front legs very narrowly so, on 

 the hind legs very broadly; last tarsal joint of the hind legs entirely white-scaled; 

 claws simple. Length, 3.5 mm. 



Male. — Proboscis long, rather slender, black-scaled, with a white ring around the 

 middle, the labellae pale-scaled; palpi long, exceeding the proboscis, slender, clothed 

 with black scales, narrowly annulated with white, the apical half covered with long 

 black hairs; head and thorax marked as in the female; abdomen deep black-scaled 

 above, without luster, the basal segmental white bands much broader than in the 

 female; legs marked as in the female. Length, 4 mm. 



Forty-seven specimens, C6rdoba, Mexico, bred from larvae in water between the 

 leaves of bromeliaceous plants (F. Knab). 



Type.— Cat. No. 11970, U. S. N. M. 



Description op Female, Male, and Laeva of Culex stenolepis: 



Female. — Proboscis moderate, uniform, labellae conically tapered; vestiture 

 black, with a brownish luster on median portion ; setae small, curved, black, those 

 on labellae more prominently outstanding. Palpi short, rather prominent, one- 

 fourth as long as proboscis, clothed with roughened black scales and rather 

 bristly setae. Antennae with the joints subequal, rugose, pilose, black, the second 



