21 Bic 



Base. — That portion whereby it is affixed to the 

 body ; the root or bottom upon which an organ 

 stands. 



Basiconic sensillae. — Upright conical club-like 

 sense-hairs which are immovable at the base, 

 while the chitinous investment is very thin. 

 (Berlese.) (L. basis, conicus, and from sensus, 

 the sense.) 



Basilaire. — Straus' term for the Jugulum. (L. 

 basilaris, from basis.) 



Basilar membrane. — A thin fenestrate membrane 

 separating the cones and rods from the optic 

 tract, (From Base, and L. memhrana.) 



Basis. — The base, the whole lower part of the theca, 

 from the mouth to as far as the labella. (L.) 



" Battledore Scales." — A term given to one of the 

 numerous varieties of spinules. (M.E. batyl- 

 doure, Provincial batedor. [I he corruption to 

 battledore was due to confusion with battle, vb. 

 to fight] and M.E. scale.) 



Belly. — (A.S. bcehj, baiicj, a bulge, a belly.) See 

 Venter. 



Bi-. — Latin prefix, signifying two, or twofold. 



Biarticulate. — Having two joints. (L. hi, and 

 artus, a joint.) 



Bicarinate. — Having two longitudinal elevated 



lines. (L. bi, and carina, a keel.) 

 Bicaudate. — Possessing two tails or processes. The 



term is generally applied to the wings of Lepi- 



doptera when so formed. (L. hi, and cauda, 



a tail.) 



