ON THE LIFE-HISTORY OF FILARIA IMMITIS. 257 
Fig. 1. 
ie r2ie Voc fs 
A, thorax; B, head; C,clypeus; D, skin; E, eye; F, filaria; H, labella; 
J,antenna; L, labium or proboscis; N, neck; O, occiput; P, palpi; 
S,*stylets. 
