INSECUTOR INSCITI^ MENSTRUUS 125 



swollen, tending to be spherical, excavate at base ; lobe divided, 

 the inner portion with two long distorted rods with spoon- 

 shaped tips, one inserted beyond the other ; outer portion bear- 

 ing four filamentous curved rods and a long-stemmed trans- 

 versely elliptical leaf-shaped appendage. Harpes comb-shaped 

 with nine teeth. Unci with the first plate narrowed and hook- 

 like but not very slender nor long ; second plate stout, concave, 

 bifid and widened at tip without accompanying hooks ; sub- 

 lateral plate broad, with a finger-shaped process on the outer 

 angle. Basal lobes long, reaching to middle of side-piece, the 

 setse forming a dense tuft at tip. 



Types, No. 21715, U. S. Nat. Mus. ; two males and a female, 

 Trinidad River, Panama, males, June 9, ini2, female, May 5, 

 1911. taken at light (A. Busck). 



Culex (Helcoporpa, new subgenus) menytes, new species. 



Head with narrow curved whitish scales over the nape and 

 vertex, broad white ones low on the sides ; many erect black 

 forked scales. Mesonotum brown, longitudinally lined with 

 darker brown, clothed with narrow curved bronzy brown 

 scales and brown bristles. Abdomen entirely black, bronzy 

 above, dull on the venter. Legs bronzy brown, the coxse and 

 the femora below pale. Wing scales dark brown, ovate, 

 spinose along costal edge. 



Male genitalia. Clasp filament attenuated at outer third, the 

 tip obliquely elliptically excavate, hollowed, a curved spine at 

 the tip ; dorsal margin minutely hirsute. Side-piece swollen, 

 about twice as long as wide, excavate at base ; lobe divided, 

 the inner part with one large sinuate filamentous appendage 

 and a small rod ; the other with an elliptical flattened append- 

 age with incised hooked tip, a fan-shaped leaf obliquely ter- 

 minated and two small setje. Harpes comb-shaped, the tips 

 recurved in the shape of a hook, about 12 teeth, somewhat 

 spreading and not closely set. Basal plate of the unci trig- 

 onate, not hooked ; second plate short, ill-defined ; third plate 

 with laterally projecting tooth ; sublateral plate not strongly 

 developed. Basal lobes conical, large but not long. 



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