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INSECUTOR INSClTIyE MENSTRUUS 175 



bent tip, a large leaf longer even than the filament, with a few 

 shorter, flattened, hair-like appendages subapically, inner di- 

 vision with a filament on a stout pedicle and another filament 

 from the base of this pedicle. Harpes slender, the tip comb- 

 shaped. Clasp-filament broadened at apex, roughened out- 

 wardly, with snout-like termination. Second uncal plate with 

 a concave tip, one point sharp, the other point rounded and 

 not denticulate. 



Larva : Antennae large, spicular, a tuft at outer third. Upper 

 head-hairs in threes. Body very slightly spicular. Air-tube 

 ten times as long as wide, pecten on basal two-sevenths of 

 about sixteen teeth, only six ventral tufts left in our single 

 mount, suggesting the presence of five pairs. Comb of eighth 

 segment a large triangular patch. 



We have a male and a female bred from larvae in ground- 

 pools at Kabelstation, December, 1918, and May, 1919. 



The genitalia come near to those of Culex invocator Pazos 

 from Cuba, but differ in details of the structure of the outer 

 division of the lobe. 



Culex (Choeroporpa) maroniensis, new species. 



Male. Proboscis expanded apically. Palpi long. Occiput 

 covered with flat whitish scales and black upright forked scales 

 and a few narrow curved scales. Mesonotum with bronzy 

 brown scales. Abdomen black above, a row of indistinct 

 small, white, segmental, lateral, basal spots. Venter dark with 

 pale basal bands. Wings hyaline, scales ligulate to elliptical. 

 Legs bronzy brown. Claw formula: 1.1-1.1-0.0. Length: 

 Body, 2.5 mm. ; wing, 2 mm. 



Genitalia : Side-piece with a divided lobe on outer third ; 

 outer division with a number of filaments and setse, inner 

 division with a terminal rod and another one with hooked tip 

 at its base. Harpes slender, with comb-shaped tip, with large 

 number of teeth. Second uncal plate with a basal hook, apex 

 with rounded inner corner and a strongly chitinized outer 

 point ; the margin between denticulate and forming another 

 chitinized point in the center. 



