CULEX LEPRINCEI 397 



margin, and with an articulated terminal spine. Harpes with a short, thick 

 inner branch crowned with spines. Harpagones divided into several lamellae. 

 Basal appendages approximate at origin, divergent, long, rounded enlarged 

 apically, with many long setae. 



Larva, Stage IV (plate 113, fig. 378) . — Head transverse, widest through eyes, 

 convex at sides, a deep notch at insertion of antennae, front margin broadly 

 rounded, with a slight emargination between the short elypeal spines. Antennae 

 large, slightly curved, basal two-thirds thick and well spined, with a large tuft 

 from a notch ; two long seta shortly subapical, a moderate seta, a short one and a 

 digit at tip. Both pairs of dorsal head-tufts short, in threes ; ante-antennal tufts 

 multiple. Mental plate triangular, with a large central tooth and seven on each 

 side, last ones more remote, basal ones small. Mandible quadrangular; three 

 filaments before tip; an outer row of cilia from a collar; a row of transverse 

 rounded prominences well within outer margin, each bearing a row of short 

 hairs and a tuft of long ones ; dentition of two teeth with a group of spines below ; 

 a spine before, a long, smooth filament and row of feathered hairs within ; process 

 below obscurely furcate, with a longitudinal row of hairs and a tuft at tip; basal 

 angle sharp and slender, with a row of hairs within from stout bases ; a row of 

 long hairs at base. MaxiUa elongate, slender, divided by a suture ; inner half 

 with a row of long spines on a margin beyond middle and at base ; an irregular 

 row of spines within, a few at base ; a long articulated spine before tip ; a row of 

 long hairs at tip running down along the suture ; outer half with the two fila- 

 ments very near the base and a group of stout spines before. Palpus rudi- 

 mentary with four long digits irregularly distributed. Thorax rounded, wider 

 than long; abdomen moderate, anterior segments shorter; skin glabrous. Air- 

 tube slightly curved forward, curved on posterior aspect, four times as long as 

 wide ; peeten long, reaching over basal two-fifths ; single tooth long, serrate on 

 one side, base narrowly expanded and with serrations over it ; nine long tufts on 

 posterior margin, three of them within peeten ; a pair of long curved hooks, with 

 median branch, at tip. Lateral comb of eighth segment of about sixteen large 

 bar-like spines in a straight row; single spine sharply tapered, fringed with 

 very fine nearly invisible spinules. Anal segment longer than broad, ringed 

 by the plate ; dorsal tuft of two long hairs and a short one on each side ; ventral 

 brush well developed, confined to barred area. Anal gills very long, tapered to 

 a sharp point. 



The larvas live in ground-pools. Mr. Busck got them in a large open pool in 

 high woods. 



Island of Trinidad, West Indies. 



Arima, July 10, 1905 (A. Busck) ; Trinidad (P. W. TJrich). 



CULEX LEPRINCEI Dyar & Knab. 



Culex leprincei Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 202, 1907. 

 Culex leprincei Busck, Smiths. Misc. Colls., quart, iss., lii, 67, 1908. 

 Culex leprincei Theobald, Mon. Culic, v, 614, 1910. 



Original Desckiption oi' Cui,ex lepbincei: 



5. — Proboscis moderately long and slender, enlarged towards the apex, entirely 

 black scaled; palpi short, black scaled; occiput clothed with flat bronzy scales and 

 with black erect forked ones, without white ocular margin; mesonotum clothed with 

 deep bronzy brown scales with faint indications of two lighter longitudinal dorsal 

 lines; scutellum bronzy scaled; metanotum deep pitchy brown; abdomen broad, 

 flattened, truncate at tip, black scaled above with faint bronzy luster, the bases of 

 the segments with lateral white triangular spots, the marginal hairs light yellow, 

 beneath the segments are black with broad white basal bands; legs dark with bronzy 

 luster, the knees and tips of tibiae lighter colored, tarsi not ringed, claws simple; 

 wing scales brown. Length, 3.5 mm. 



