MOSQUITOES 



409 



saliva is introduced into the wound through the lumen of the hypopharynx, 



while the blood is sucked up by the mosquito in the groove of the labium. 



The three thoracic segments are soldered together. The central one 



md. 

 h. 



mx. 



FIG. 264. Mouth-parts of Anopheles claviger* (after Grass!) ; h., hypopharynx 

 md., mandible ; mx., maxilla : u.L, upper lip ; l.L, lower lip ; p.. palpi. 



Ar. 



hy. 



(a) 



md. 



FIG. 265. Anopheles maculipennis (after Nuttall and Shipley). Transverse section 

 through the proboscis of a female (a) and a male (b) ; hy., hypopharynx, with duct of 

 the salivary gland; m., muscles; md., mandibles; mx., maxillae; /., labium; /./., 

 labrum. 



carries the membranous wings on the sides of the dorsal surface ; the posterior 

 somite carries the small halteres (rudimentary posterior wings). There are 

 three pairs of long slender legs on the lower side. 



1 [This should read Anopheles maculipennis, Meig. ; there was no type of A. claviger. 

 F. V. T.] 



