^2 EXPLANATION OF TERMS 



Flavous-us: sulphur yellow [gamboge]. 



Flavo-vhens: green verging upon yellow [apple green + chrome yellow]. 



Flex: to bend: io curve back. 



Flexible: pliable; with elastic properties. 



Flexile -is: capable of being bent at an angle without breaking: flexible. 



Flexuous -ose: almost zig-zag, without acute angles but more acute at angles 



than undulating : differs from sinuate in being alternately bent and nearly 



straight. 

 Flexor: that which bends; applied to muscles. 

 Flocculus -i: a hairy or bristly appendage on the posterior coxa of some 



Hymenoptera. 

 Floccus: a tuft of wool or wool-like hair. 

 Flosculiferous: species that bear a flosculus. 

 Flosculus: a small, tubular lunulate anal organ with a central style, in certain 



Fulgorids. 

 Fluviatile: inhabiting the margins of running streams. 

 Fly-blows: eggs or young maggots of flesh flies: meat is fly-blown when 



such eggs or larvae have been deposited on it. 

 Flying-hairs: very long slender surface hairs set in punctures. 

 Foetid glands: glandular structures from which a foul smelling liquid may 



be ejected. 

 Foliaceous: leaf-like, or resembling a leaf. 

 Folioles: leaf-like processes from a margin or protuberance. 

 Follicle: =cocoon, q. v.: a cellular sac or tube, as of a gland or ovary. 

 Folliculate: enclosed in a case, cocoon or follicle. 

 Food reservoir: Lcpidoptera, a blind sac or diverticulum from the hind part 



of oesophagus lying in abdomen dorsal to the stomach. 

 Foot: the tarsus, q. v.; improperly used to = leg ; but in the plural form 



refers to legs rather than tarsi : see feet. 

 Foot-shield: in caterpillars, the chitinous plate on outer side of abdominal 



feet. 

 Foot-stalk: of the maxilla, is the stipes. 

 Foramen: an opening in the body wall for the passage of a vessel or nerve: 



any opening at an apex : the opening of a cocoon. 

 Foramen magnum; the opening on the posterior surface of the head to give 



passage to those structures that extend from head to thorax : = occipital 



foramen. 

 Foramina: small openings in the body wall: in Orthoptera; the auditory 



organs on the anterior tibiae. 

 Forceps: hook or pincer-like processes terminating the abdomen, like special- 

 ized appendages of ear-wigs : similar processes in the male, used as clasp- 

 ing organs in copulation. 

 Forcipate: bearing forceps or similar structures. 

 Forcipiform: having the form of forceps or pincers. 

 Fore: anterior. 

 Foregut: extends from the mouth to the end of gizzard; its epithelium 



being formed from the ectodermal invagination known as the stomodaeum. 



