AMERICAN ENTOMOLOGY. 136 



Eruca, the state of Lepidopterous insects succeeding the egg ; 

 caterpillar : larva. 



Escutcheon, the scutel. 



Essential character, a peculiar trait, distinguishing the genus or 

 species from all others. 



Exaratus, sulcated. 



Exarticulate, having no distinct joints. 



Excatulate, or ecaudate, (wings) destitute of tail-like processes. 



Excurved, curved outwards. 



Explanate, spread out ; flat. 



Exscutellate, having no scutel. 



Exserted, protruded ; opposed to inclosed ; (aculeus) projecting, 

 not concealed within the body. 



Extended, (wings) not lying one upon the other. 



Exterior edge, or anterior edge, of the wings ; it extends from 

 the hose to the apex. 



Exterior margin, (wing) the anterior margin from the base to the 

 apex. 



Exterior palpi, the maxillary palpi. 



Exuvia, the cast-off skin, the rejected covering. See vernantia. 



Eyes, organs of sight, composed of very numerous hexagonal 

 lenses ; all insects have two eyes besides the stemmata. 



F. 



Face, or facies, the anterior and superior portion of the head ; 

 including vertex, stemmata, eyes, front, and nasus. 



Falcate, shaped like a sickle ; convexly curved before and con- 

 cave behind. 



Farctus, filled full. 



Fascia, a tranvcrse band or broad line ; a fascia is said to be 

 common, when it passes over both the superior and inferior 

 wings, as in many species of Lepidoptera, or when it passes 

 across the two elytra in Coleoptera. See striga. 



Fasciated, banded. 



Fascicle, a bundle. 



Fasciculate, bundled ; clustered as in a bundle ; tufted. 



Fastigiate, flat-topped ; of an equal height. 



Fatiscent, spontaneously mouldering and falling to] pieces in the 

 air. 



