New Methods of Classification. 11 



" Culiseta. n. gen. — Petiole of anterior fork- cell of female 

 wing about one-half its length. Posterior cross- vein less than 

 its own length from mid cross-vein. Scales very large, lateral 

 ones slender, linear ; vein scales closely appressed, frequently 

 elongated. Male wing with petiole of first fork-cell one-half to 

 two-thirds the length of the cell, and the posterior cross- vein 

 about its own length from mid cross-vein. Basal clasp segment 

 of male genitalia triangular, apical segment slender, nearly 

 straight. Claspette represented by a conspicuous basal lobe with 

 one or more large chitinous spines. Harpagones recurved, with 

 several apical teeth. Larvae with pecten prolonged into setae, 

 and with stout, spined comb scales. Type, absobrinus, Felt ; 

 species, magnipennis. Felt,* and probably incidens, Thorn. f 



" Protoculex. n. gen. — Petiole of anterior fork-cell of female 

 wing about one-half the length of the cell. Posterior cross-vein 

 more than its own length from mid cross- vein. The long lateral 

 scales well separated from the appressed vein scales. Petiole of 

 anterior fork-cell of male about equal in length to that of the 

 cell. Terminal clasp segment of male genitalia slender, curved 

 with stout apical spine. Claspette represented by a conspicuous 

 basal spine-bearing lobe and a longer terminal one. Harpes 

 broadly dilated at base, slender apically ; harpagones with 

 recurved apical spine. Larva with medium air tube, comb 

 consisting of a few spine-like scales. Type, serratus, Theo." 



Dr. Harrison G. Dyar's grouping and formation of Genera by £ 

 genitalia (Proc. Ent. Soc. Wash. vii. No. 1. 1905) is given 

 below : — 



1. Harpes and harpagones absent or greatly reduced ; 



clasp segment strong and longer than the basal 



segment Anopheles 



Harpes or harpagones developed ; clasp segment 



usually shorter than the basal segment 2 



2. Terminal clasp without a terminal articulated 



spine, though often otherwise modified, 



branched or spinous 3 



Terminal clasp with an articulated spine which is 

 usually apical : clasp usually simple, seldom 

 modified 6 



* This is a synonym of consobrinus, Desvoidy. 

 t This is a typical Theobaldia. 



