550 



THE ANIMAL PARASITES OF MAX 



The abdomen has no limbs, is composed of eight (rarely nine) distinct segments ; 

 the sexual and anal orifices are at the posterior end, the stigmata on the sides. The 

 intestinal canal (fig. 389) is composed of three principal divisions ; the anterior 

 part reaches as far as the front pair of legs, and consists of the oesophagus, which 



md. 

 h. 



mx. 



FlG. 387. Mouth parts of Anopheles claviger.^ h., hypo- 

 pharynx; md. y mandible; mx., maxilla; ./., upper lip; /./., 

 lower lip ; f. , palpi. (After Grassi.) 



md. 



r W \ \9 ^ 



iCJ 



= 



/ 



FlG. 388. Anopheles maculipennis : transverse section through the 

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

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

 /., labium ; /./., labrum. (After Nuttall and Shipley.) 



is provided with two small lateral diverticula. [At the commencement of the 

 (esophagus are one or more diverticula, which vary in size ; they contain air, food 



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

 F. V. T.] 



