USED IN ENTOMOLOGY. 51 



/Filator: the silk spinning structure of caterpillars. 



/File: the diagonal ridged vein near the base of the tegmina in crickets. 

 / used in stridulating: in general any structure wherever situated that serves 



the same purpose. 

 Filicornia: insects with thread-like antennae; e. g., in Coleoptera, the Carabida:. 

 Filiform: thread-like: slender and of equal diameter. 

 Filippi's glands: a pair of secondary glands, opening into the silk glands of 



caterpillars near their anterior end. 

 Fillet: a transverse, raised structure between the antennae in Lepidoptera. 

 Filose: ending in a thread-like process. 



Fimbria: thick, ciliated hair at the termination of any part: fringes. 

 Fimbriate: a margin or process when set with a fringe of hair closely placed. 

 Finger: of maxilla, is the digitus, q. v. 

 First clypeus: see post clypeus. 

 First inner apical nervure: in Hymenoptera (Xort.) ; is cubitus i, from media 



4. to first anal (Comst.). 

 First lateral suture: Odonata; starts from beneath base of front wing be- 

 hind humeral suture and meets it behind second coxa. 

 First longitudinal vein: in Diptera; = radius i (Comst.). 

 First submarginal cross-nervure: Hymenoptera; part of the media and the 



radio-medial cross vein (Comst.). 

 Fissate: divided or split: with fissures or cracks. 

 Fissile -is: cleft or divided; as the wings in plume-moths: also used for 



lamellate. 

 Fissiparous: applied to that form of asexual generation in which the parent 



divides ; each part becoming a new individual. 

 Fissure: a crevice: a narrow longitudinal opening: a slit. 

 Fissus: cleft: longitudinally divided nearly to base. 

 Fistula: a slender tube: specifically applied to the channel formed by the union 



of the two parts of proboscis in Lepidoptera. 

 Fistular: like a slender, cylindrical tube. 

 Flabellate: with long flat processes folding like a fan. 

 Flabelliform: fan-shaped. 

 Flabellum: a fan: a leafed structure: the transparent lobe at the end of the 



glossa in bees : also used as =: flagellum ; q. v. 

 Flabs: the lobes at the tip of the dipterous mouth; := labella ; q. v. 

 Flaccid: feeble: limber: lax. 

 Flagelliform: whip-like; applied to a process. 

 Flagellum: that part of the antenna beyond the pedicel: a whip or whip-like 



process : the tail-like process of a spermatozoon. 

 Flammate -eus: flaming or fiery red [vermilion intensified]. 

 Flange: a projecting rim or edge. 

 Flank: the sides of the thorax: the pleura. 

 Flaring: widening out like the mouth of a trumpet. 

 Flavescent: somewhat yellow. 

 Flavid: yellowed: sulphur yellow. 

 Flavo-testaceous: light vellow-brown : almost luteous. 



