INSECUTOR INSCITI^ MENSTRUUS 121 



blackish ; mid tarsi silvery white below on most of the second 

 and all of the third to fifth joints; front tarsi with a whitish 

 .reflection beneath ; hind tarsi dark. Wings faintly smoky, the 

 scales dark, rather broadly ligulate outwardly. 



Genitalia : Side pieces broadly conical, not longer than wide, 

 each bearing near the base a tuft of long, thick, pointed spines, 

 which extend beyond the end of the side-piece; clasp-filament 

 long, slender, simple, being only a little swollen outwardly and 

 with a few scattered set?e ; three short terminal spines. Basal 



1 structures reduced, invisible. Basal appendages with foliate 

 plates. 



Type, male, No. 21915, U. S. Nat. Mus. ; Lawa River, 

 Surinam, the larvse found in Bromeliaccce, March, 1917 (Mrs. 



[ J. Bonne- Wepster) . 



This species is provisionally placed in Wyeomyia. probably 

 requiring a new genus. It would fall in Sabethimis by the 



I monograph tables, but seems out of place there. The peculiar 

 genitalia, totally unlike those of any other Sabethid known to 

 me, suggest those of Uranotaenia. 



Culex (Culex) surinamensis, new species. 



Proboscis showing a broad pale band below in the female, 

 white-ringed in the male ; occiput with brown scales, the eyes 

 margined with white ; mesonotum with narrow curved dark 

 golden brown scales ; abdomen black, with broad basal seg- 

 mental white bands in both sexes ; venter with black apical 

 bands. Legs black, the femora pale below, the tibiae white- 

 lined on the under side nearly to apex; tarsi with moderate 

 white rings at both ends of the joints, the last joint like the 

 others. 



Types, No. 31912, U. S. Nat. Mus.; Marowyne and Lawa 

 Rivers, Surinam, bred from larvae in a rock pool and in a 

 water barrel, March, 1917 (Mrs. J. Bonne-Wepster). 



The adult has the coloration of coronator D. & K. and 

 ousqua Dyar. The definition is by the male genitalia, which 

 are as in coronator, except that the outer tooth of the second 

 uncal plate is small and rounded, like a little thumb, instead of 



