SIMULIIDAE OF AFRICA 



177 



325 



326 



327 



328 



329 



330 



331 



Figs. 325-331. Simulium (Dexomyia) atlanticum sp. n., characters of the larva. 325, head 

 in dorsal view, showing remarkable thickened rays of cephalic fan, pigmentation and shape 

 of cephalic apotome. 326, hypostomium. 327, side view of head capsule and its pig- 

 mentation. 328, ventral view of head capsule showing pigmentation and shape of post- 

 genal cleft. 329, maxilla. 330, mandible. 331, shape of apical mandibular teeth. 



