Vol. Xxiv] ENTOMOLOGICAL NEWS. 69 



(1. Species in which the entire under surface is silvery white 

 or yellowish. 

 I. A small form having dorsal surface black; stripes on 



thorax irregular IVycomyia smithii Coq. 



II. The thorax is without marks or ornamentation. 



a. The segments of abdomen are narrowly banded at their 



bases. 



1. A small dark brown species; abdominal bands wider 



in middle than at sides except on 7th segment, which 

 usually has a narrow band, broad at sides, 



Acdes fusciis O. S. 



2. A moderate-sized brownish species, with the bands of 



abdomen of moderate width ..Culcx pipiens Linn. 



3. A somewhat darker, longer-legged species, with very 



narrow regular abdominal bands, 



Culex salinarius Coq. 



b. The segments of abdomen are narrowly banded at their 



apices only. 



I. A small, slight, blackish species. .Culex territans Wlk. 



c. The abdomen has no bands or only the merest indica- 



tions of them. 



1. A uniformly dark brown species of moderate size, 



Culex melanurus Coq. 



2. Species having thorax yellowish brown, somewhat 



polished, with a thin bluish gray frosting, 



Anopheles barberi Coq. 



TABLE TO DETERMINE THE LARVAE. 

 Antennae arising from the sides of head not pendant i 



1. No siphon or breathing tube on 8th abdominal segment, 



Anopheles. ... 2 

 A siphon or breathing tube on 8th abdominal segment 3 



2. Antennae yellowish; tracheal gills moderate in size. 



A. punctipennis, .1. quadrimaculatus 

 Antennae shorter, brownish; tracheal gills short -\. crucians 



3. Hair tufts on thorax and abdomen simple, sparse or absent... 4 

 Thorax and abdomen with star-shaped or stellate hair tufts. 



Uranotaenia sapphirina 



4. Abdomen with four tracheal gills at tip 5 



Abdomen with two tracheal gills only; a small whitish species 



with head rounded and thorax subquadrate, 



Wyeomyia smithii 



5. Antennae arise from sides of anterior part of head 6 



