INSECUTOR INSCITIylv MF.NSTRUUS 173 



The genitalia come nearest to Ciilcx chrysonotum D. & K., 

 but differ in the arrangement of the filaments on the lobe of 

 the side-piece. 



We found the larva:; in rock-pools in the Surinam River, 

 Kabelstation, December, 1918. 



Cotype, No. 2270G, U. S. National Museum. 



Culex (Choeroporpa) albinensis, new species. 



Proboscis rather long. Palpi short in the female, long in 

 the male. Antennae moderate. Occiput clothed with flat 

 grayish scales and many erect forked scales ; a few narrow 

 curved scales between the eyes. Mesonotum dark brown with 

 bronzy brown narrow curved scales. Scutellum with similar 

 vestiture. Abdomen black-scaled dorsally, dark-scaled ven- 

 trally, laterally with basal, segmental silvery-white patches. 

 Wings hyaline, with broadly linear to narrowly elliptical 

 scales. Legs moderate, brown ; tarsi with brassy luster. 

 Length : Body, 2.5 mm. ; wing, 2.5 mm. 



Genitalia : Clasp-filament without horn-like tuft, side-piece 

 without a leaf, second uncal plate with a subbasal hook on 

 inner margin, the fork denticulate centrally with horn-like 

 limbs. 



Larva : Antennae large, spiculate, a tuft at outer third. 

 Body spicular. Air-tube six times as long as wide, tapering 

 on basal half, with a dark band at the middle. Pecten on 

 basal third, about sixteen teeth. Five pairs of ventral tufts. 

 Comb of the eighth segment several large spines in a patch. 



The genitalia come close to Culex educator D. & K. but 

 differ in the second uncal plate. 



We found the larvae in ground pools near Paramaribo. 



Cotype, No 22707, U. S. National Museum. 



Culex (Choeroporpa) coppenamensis, new species. 



Male. Proboscis moderate, swollen at tip. Palpi long. 

 Occiput clothed with broad, flat scales all over, many black 

 erect scales posteriorly and a group of white semi-erect scales 

 medianly and posteriorly. Mesonotum black, with bronzy 

 brown, narrow curved scales. Scutellum with similar vesti- 



