4 EXPLANATION OF TERMS 



Afternose: a triangular piece below antenna; 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 Dipt era = alula and squama, q. v. 



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

 capable of inflation and supposed to lessen specific gravity. 



Air-tube: a respiratory siphon. 



Ala -Ee: a wing or wings. 



Alar appendage: see alulet. 



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

 of the wing: Hymoioptera. 



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 neces 

 sarily 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 ist 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, Michi- 

 gan, 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 Dpposite sex. 



