FSYCHE. 



THE MOUTHPARTS OF THE NEMATOCEROUS DIPTERA, IV. 



BY VERNON L. KELLOGG, STANFORD UNIVERSITY, CALIFORNIA. 



CULICIDAE. 



Coirthra sp. The mouthpaits are 

 of the short, usual Nematocerous 

 type. The labrum-epipharymx (fig. 8 A, 

 /. ep.) is strongly conve.x above, well 

 chitinized, and pointed. Mandibles are 

 wanting. The maxillae (fig. 8 A, mx) 



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tiie outer ones, the paraglossae, being 

 more strongly chitinized than the inner 

 median one, the fused glossae. The 

 hypopharynx (fig. 8 A, hyp') is narrow 

 and tapering, and finely fringed at 

 apex. 



I have examined also the mouthparts 

 of pupae of Coreikra, but the pupae 



Fig. 8, A. Mouthparts of Culex sp. : /. ep., labrum-epipharvnx, 

 >«(/., mandible, nix., maxilla, mx.L, maxillar lobe, mx.p., maxillar 

 palpus, //. labium gl. glossa, /^. paraglossa, /lyp-, liypopharynx ; B, 

 Mouthparts of Corethra sp., same lettering. 



have long 4-segmented palpi rising from were too nearly mature to present any 



a palpifer, and a short, delicate, very instructive differences in mouthparts 



rudimentary lobe. The labium (fig. 8 conditions. 



A, //) has an elongate rectangular basal Ciile.x sp. The well-known mouth- 



sclerite and three short terminal lobes, parts of Culex are markedly dift'erent 



