5° 



EXPLANATION OF TERMS 



Fecundation: the making fertile; as an egg by a spermatozoon. 



Feeler: commonly applied to antenna?; q. v. 



Feelers: tactile organs: the term is usually applied to the antennx but some- 

 times to the palpi, as mouth-feelers. 



Feet: the legs or organs of locomotion; one pair attached to each thoracic 

 segment ; composed of coxa, trochanter, femur, tibia and tarsus only ; plural 

 of foot : q. v. 



Female: designated by " $," the astronomical sign for Venus: that sex in which 

 the ova are developed. 



Femina: the female, or belonging to that sex. 



Femorate -us: with abnormal or unusually developed femora or thighs. 



Femoro-tibial: pertaining to both femur and tibia or to the articulation be- 

 tween them. 



Femur -ora: the thigh: usually the stoutest segment of the leg, articulated 

 to the body through trochanter and coxa and bearing the tibia at its distal 

 end : in Coccidcr and quite commonly, the femur and trochanter are con- 

 sidered as one, for measuring purposes. 



Fenestra: a window; a transparent glassy spot or mark; a pellucid mark in a 

 vein : a small, pale, membranous area at the base of the antennae in roaches. 



Fenestrate: with transparent or window-like naked spots as in the wings of 

 some Lepidoptera. 



Fenestrate membrane: of the compound eye is at the base of the ommatidia, 

 at their junction with the optic nerve ; see retina. 



Ferreous -eus: the metallic gray of polished iron. 



Ferrugineous -ous, -eus, -osus: rusty red-brown [Dragon's blood, but brighter]. 



Ferrugino-testaceous: a rusty yellow brown; a mixture of rusty red with dull 

 yellow brown. 



Fertilization: takes place when a spermatozoon enters through the micro- 

 pyle of an ovum and unites with the cell nucleus : loosely applied like copu- 

 lation or to its completion. 



Festivus: variegated with bright colors. 



Festooned: arranged in loops as if hung from nails. 



Fibre: a thread-like structure of any tissue. 



Fibrilla: rod or sliver-like nerve elements, often grouped like a bundle of 

 short threads. 



Fibrin: a proteid compound making up a large part of the muscular tissue: 

 also found in blood and other body liquids. 



Fibrinogen: a proteid substance of the blood and other body fluids, concerned 

 in the production of fibrin. 



Fibroin: a chemical compound found in silk, cobwebs and the like. 



Fifth longitudinal vein: Diptera (Will.); = media 3 (Comst.). 



Filament: a thread: a long slender process of equal diameter throughout: an 

 elongated appendage. 



Filariasis: a disease caused by the presence of minute worms or Filaria. 

 transmitted by mosquitoes. 



Filate: Diptera; antennae that an- simple, without lateral hair or dilation: 

 thread-like. 



