4 EXPLANATION OF TERMS 



Afternose : a triangular piece below antennae and above clypeus : see post- 

 clypeus. 



Agamic -ous: reproducing without union with a male. 



Agamogenesis: reproduction without fertilization by a male: see partheno- 

 genesis ; gamogenesis. 



Agglomerate: heaped or massed together. 



Agglutinate: stuck or glued together; welded into one mass. 



Aggregated: crowded together as closely as possible. 



Agnathous: without jaws; specifically applied to those Neuropteroid series 

 in which the mouth structures are obsolescent. 



Aileron: the scale covering the base of primaries in some insects; see 

 tegulse; in Diplcra'=- alula and squama, q. v. 



Air-sacs or vesicles: pouch-like expansions of tracheal tubes in heavy in- 

 sects, capable of inflation and supposed to lessen specific gravity. 



Air-tube: a respiratory siphon. 



Ala -SB: a wing or wings. 



Alar appendage: see alulet. 



Alar frenum: a small ligament crossing the supra-alar groove toward the 

 root of the wing : Hymenoptera. 



Alary: relating to the wings: applied also to the wing muscles of heart. 



Alate-us: winged; with lobes similar to wings in appearance though not 

 necessarily in function. 



Albi, albus: white. 



Albicans: formed or made of white. 



Albidus: white with dusky tinge. 



Albinic: of the character of an albino. 



Albinism: that condition in which there is an absence of color or a whitening 

 in a form usually colored. 



Albino: a colorless individual of a species that is normally colored. 



Albumen: the white of egg or the substances in the tissues which have the 

 same characteristics. 



Albumin: the characteristic substance forming the white of egg. 



Albuminoid: like or of the character of albumen. 



Alimentary canal: the digestive tract as a whole; begins at the mouth and 

 extends through the body to the anus. 



Alitrunk: that part of the thorax to which the wings are attached : in many 

 Hymenoptera, includes the 1st abdominal segment. 



Alizarine: a transparent, orange red [alizar crimson]. 



Alleghanian faunal area: is that part of the transition zone comprising the 

 greater part of New England, s. e. Ontario, New York, Pennsylvania, 

 Michigan, Wisconsin, Minnesota, eastern N. Dakota, n. e. S. Dakota, and 

 the Alleghanies from Pennsylvania to Georgia. 



Alligate -us: fastened or suspended by a thread; like the chrysalis of Papilio, 

 etc. 



Alliogenesis: when the development includes an alternation of generations 

 (q. v.), as in Cynipids. 



Alluring glands: glandular structures diffusing an odor supposed to be at- 

 tractive to the opposite sex. 



