193 
DESCRIPTION OF ILLUSTRATIONS. 
Frontispiece . — Section of bee, showing internal organs. — brain; 
d-, ganglia ; compound eye ; oesophagus ; honey 
stomach ; //, stomach mouth ; 2, chyle stomach ; /&, small 
intestine; /, malpighian tubes ; w, large intestine ; ;z, rectal 
glands ; anal opening ; poison sac ; r, sting ; i", spiracle ; 
/, air sacs; 2/, lubricating gland. 
FIG. PAGE 
1. Comb, showing different forms of cells and develop- 
ment of brood. — A, egg, first day; B, egg, second day; 
C, egg, third day ; D, various stages of larvae ; E, old 
queen cell cut down ; F, queen cell just opened ; 
G, queen cell ; H, queen cell torn open at the side ; 
I, honey cells sealed over ; K, capped drone brood ; 
L, irregular and transition cells ; M, attachment cells ; 
N, worker brood (some of the cell cappings are being 
cut open by the emerging bees) 6 
2. Queen 8 
3. Drone 8 
4. Worker 9 
5. Hairs. — a, c, sensory hairs ; ff, feathery hairs ; split 
hair from tip of tongue ; T, /z, feathery hairs having lost 
their radii ; g, conoid hair 16 
6 . Head of bee. — <7, vertex ; cheek ; c, clypeus ; d, com- 
pound eye; f, ocellus; antenna; /, h, g, trophi ... 19 
7. Head of. A, worker; B, queen; c, drone 20 
8. Antenna. — scape; flagellum ... 21 
9. Mouth parts, —c, clypeus ; /», mandibles ; r, labrum ; 
epipharynx 22 
O 
