DEINOCERITES CANCER 203 



Abdomen shiny steely-grey, covered with dull brown scales, which show violet 

 reflections; the last two apical segments have numerous scattered ochraceous scales 

 as well; venter paler, covered with dull ochraceous scales. 



Wings with the veins clothed with rather short and moderately thick brown 

 scales, with convex extremities and also with some longer and thinner lateral ones, 

 but not nearly so thin as in Culex; first submarginal cell a little longer and narrower 

 than the second posterior cell, their bases about level, stem of the first submarginal 

 nearly half the length of the cell, that of the second posterior cell two-thirds the 

 length of the cell; posterior cross-vein rather more than its own length distant from 

 the mid cross-vein; the sub-costal reaches the border of the wing level with the base 

 of the first submarginal cell; halteres with pale ochraceous stem and fuscous knob. 



Legs with the coxae and trochanters pale ochraceous; fore and mid femora rather 

 thick, posterior femora thinner, brown above, pale ochraceous beneath, a row of 

 bristles on each side, fore, mid, and hind tibiae brown with a few bristles, metatarsi 

 and tarsi brown; ungues of fore and mid legs equal and simple, rather straight, the 

 mid rather shorter and more curved than the fore ungues (hind ones broken); 

 between the claws is a very distinct and large yellow empodium. 



Length. 4.5 mm. 



Hatitat. St. Lucia (Low, per Daniels). 



Oltservations. Described from a single $. It is very marked and differs in several 

 respects from any other Culex, especially in (i) the long antennae, (ii) the ungues, 

 and (iii) the swollen fore and mid femora. I have thus placed it in a separate genus, 

 which lies nearest to the Deinocerites from Jamaica, and from which differs in the 

 (a) structure of the antennae, the second to fourth joints being scaly and in the 

 joints gradually shortening to the apex, (b) in the structure of the ungues and in 

 the swollen fore and mid femora, which are of normal size in Deinocerites. 



A number of fresh specimens have been received since this description was 

 drawn up. 



Descbiption of Female, Male, and Laeva of Deinocebites cancer: 



Female. Proboscis rather long, scarcely thickened towards apex; labellgB 

 rather large, conical ; setae rather long, dense, those on the labellae more promi- 

 nently outstanding; vestiture of dark-brown scales. Palpi short, about one- 

 sixth as long as proboscis, brown scaled, with outstanding sets. Antennae long, 

 filiform, very slender, second joint about fourteen times as long as wide, the suc- 

 ceeding ones about six times as long as wide, subequal ; tori subspherical, with a 

 cup-shaped apical excavation, luteous brown, darker within; hairs of whorls 

 sparse, short, black. Clypeus elliptical, prominent, conical, brown, nude. Eyes 

 broadly contiguous above, black. Occiput clothed with narrow, curved golden- 

 brown scales, paler, broader and denser along margin of eyes, pale, broad and 

 flat on the cheeks; numerous erect, forked brown ones forming a dense mass 

 on the nape ; a row of bristles along margins of eyes. 



Prothoracic lobes elliptical, remote dorsally, clothed with black bristles. 

 Mesonotum clothed with narrow, curved golden-brown scales; a pair of bare 

 subdorsal stripes, rather narrow and close together ; setae abundant, long, coarse, 

 arranged in broad subdorsal and marginal rows, longest posteriorly. Scutellum 

 trilobate, clothed with golden-brown scales, each lobe with a group of coarse 

 black setas. Postnotum rather narrow, with median carina, elongate, brown, 

 smooth. Pleuras and coxae luteous brown, with a vertical patch of bronzy-brown 

 scales on the mesopleura and rows of rather coarse dark bristles. 



Abdomen subcylindrical, tapering slightly, blunt at apex, the cerci large, 

 subconical, each with a pair of flattened terminal filaments; last segment of 

 abdomen tubercularly roughened on lower surface, with long coarse setae ; vesti- 

 ture above of dull-brown scales with bronzy and blue luster, beneath dull yel- 

 lowish, submetallic ; setae numerous, those on hind margins of segments coarser ; 

 first segment with numerous pale hairs dorsally. 



Wings rather broad, hyaline; petiole of second marginal cell about one-half 

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

 vein distant rather more than its own length from anterior cross-vein ; scales of 



