INSECUTOR INSCITI.Tv MENSTRUUS 129 



Harpagones nearly half as long as the side-piece, the apical 

 filament long, slenderly sickle-shaped or a little expanded in 

 the middle. Harpes concave with revolute margins. Unci 

 conical. Basal appendages short and stout, with four setae on 

 the tip and one at the side. Clasp filament simple with long 

 terminal spine. 



Types, male and female, No. 21916, U. S. Nat. Mus. Also 

 52 other specimens, Guayaquil, Ecuador (F. Campos R.). 



Allied to A. scapularis Rondani, but the male genitalia with- 

 out a retrose spine on the filament of the harpago. 



Named in honor of the collector, Prof. F. Campos Riba- 

 deneira. 



Aedes (Taeniorhynchus?) thelcter, new species. 



Head and mesonotum with dense narrow curved golden 

 yellow scales. Abdomen black, with median segmental patches 

 of yellowish white scales, forming large triangular basal spots, 

 on the first segment almost reaching apex ; similarly colored 

 lateral patches, larger, leaving only a small space at apices of 

 segments black ; venter entirely pale yellowish scaled. Wing 

 scales black, narrow. Legs, femora pale below, tibiae brownish, 

 tarsi black. Claws toothed. 



Type, No. 21718, U. S. Nat. Mus., female, Brownsville, 

 Texas, August 29, 1916 (M. M. High). Thirty-two other 

 females are before me from the same collector, but all in poor 

 condition. If this species belongs in the subgenus Taenior- 

 hynchus, as surmised, the larvae may be found in rock-holes 

 along the river; but the species may belong in Ochlerotatus. 

 In the absence of a male, I do not feel certain. 



