184 GRAMMAR OF ENTOMOLOGY. 



pupa unknown. Imago with antennae cylindric- 

 conic, acute, twelve-jointed ; ligula small, pubes- 

 cent, and bilobed ; maxillary feelers very short, 

 exarticulate. Inhabits flowers ; is sluggish in its 

 movements. Scatops. 



666. Musquitoes (Simulates). Larva aquatic ; 

 supposed to feed on vegetable substances ; elongate, 

 cylindrical, incrassated posteriorly, semi-trans- 

 parent. Pupa also aquatic, but quiescent ; ovate, 

 gibbous, brown-coloured, clearly exhibiting all 

 the parts of the future imago. Imago with an- 

 tennae eleven-jointed, very short ; maxillary 

 feelers elongate, incurved, composed of four dis- 

 tinct joints, the fourth very long and pointed ; 

 the labrum, mandibles, and maxillae sharp and 

 wedge-shaped ; the ligula fleshy and bilobed ; 

 ocelli none ; wings very wide, with stout costal 

 nervures, and scarcely any elsewhere ; meso- 

 thorax globose, very prominent ; body short and 

 small, colour black. Inhabits woods, feeding on 

 the blood of man and animals. Simulia. 



667. Gnats (Culicites). Larva elongate, car- 

 nivorous, active, aquatic. Pupa equally active, but 

 rather shorter, and the head and prothorax much 

 incrassated. Imago with fourteen-jointed antennae, 

 plumose in the males, hairy in the females ; 

 ligula slender and elongate, forming, together 

 with the mandibles, maxillae, tongue, and labrum, 

 a porrected blood-sucking apparatus ; the max- 

 illary feelers are long, divaricating, and clavate ; 



