» 



INSECUTOR INSCITI/E MKNSTRUUS 171 



Coloration 



General coloration gray, abdomen subcjiindrical, very little com- 

 pressed, wing-scales linear to narrowly ligulate. . . .tn/o/ia<a, n. sp. 



General coloration black, abdomen strongly compressed, wing- 

 scales ligulate to elliptical with a few linear scales inter- 

 mixed iridescens Lutz, secunda, n. sp. 



Alale gemtalia 



Arm of side-piece preceded by a patch of setae infoliata, n. sp. 



Without this structure urichii Coquillet 



The larvae live in tree-holes, like the other Carrollia species. 

 We have them from the interior, Dam, January, 1919. 



Culex (Culex) brevispinosus, new species. 



A typical Culex in general appearance, extremely similar to 

 Culex (Culex) coronator D. & K. and Culex {Culex) suri- 

 namensis Dyar. There are small triangular spines present on 

 the air-tube of the larva, placed near the tip as in coronator. 

 They are very much smaller, however, than in coronator and 

 the air-tube is much longer and narrower, and there is no 

 chance to confuse the two larvae. The male genitalia come also 

 very near to those of coronator, but the upper arm of the 

 second plate is capitate instead of bearing a long slender 

 sharply angled tooth as in coronator or a short thumb-shaped 

 tooth as in surinamensis. The adults do not have the faint 

 pale rings on the tarsi present in coronator and still more dis- 

 tinct in surinamensis. 



Cotype, No. 23704, U. S. National Museum. 



Culex (Choeroporpa) alcocci, new species. 



Proboscis very long, black. Palpi short in the female, long 

 in the male. Occiput densely clothed with yellowish brown 

 upright forked and narrow curved scales medianly, with flat 

 gray scales on the sides. Mesonotum shining yellowish-gray, 

 clothed with very long, narrow curved black scales with strong 

 golden-yellowish luster. Abdomen depressed, black above, 

 pale below, a few dull white scales on the sides of the segments 

 basally. Wings with elliptical scales. Legs bronzy brown, 

 femora pale beneath. Length : Body, 3 mm. ; wing, 2.5 mm. 



