Glossary of Special Terms. 123 



Fronto-orbital bristles, several bristles along the front next the eyes (Diptera) 



(PI. 13, fig. 304). 

 Furcula, the forked springing appendage below the end of the abdomen. (CoUem- 



bola). 

 Gena (-nae), the cheek. 

 Geniculate, abruptly bent, elbowed. 

 Genitalia, the external sexual organs. 

 Gibbous, puffed out; hunch-backed. 

 Glabrous, bald, smooth, free of hairs. 



Gonapophysis (-ses), the short conical egg-laying processes terminating the abdo- 

 men. 

 Graduated crossveins, an oblique row of crossveins forming steps across the wing 



(Neuroptera). 

 Gravid, filled with eggs. 

 GMar siiture, a longitudinal impressed line on each side of the gula or middle piece 



of the throat. 

 Halter, a small knobbed appendage on each side of the thorax replacing the hind 



wings (Diptera). 

 Haustellate, mouth formed for sucking, the mandibles not fitted for chewing. 

 Hemelytron (-ra), the modified fore wings of Hemiptera. 

 Heteromerous, differing in the number of joints in the tarsi. 

 Holoptic, eyes of the male meeting above the antennae (Diptera). 

 Homonomous, similar in form, function or development. 

 Humeral angle, the inner front corner of the wing. 

 Hyaline, more orl ss transparent. 

 Hypopleural bristles, a more or less vertical row of bristles above the hind coxae 



(Diptera). 

 Hypopygium, the last ventral plate; or the inflexed genitalia. 

 Ingluvial, pertaining to the crop. 

 Interfrontal bristles, minute bristles on the central part of the front (Diptera) (PI. 



13, fig. 304). 

 Interstitial, occurring between two segments, e. g. the trochanter, linking the coxa 



and femur. 

 Intra-alar bristles, several bristles above the root of the wing next to the dorsocen- 



trals (Diptera). 

 Jigum, a lobe-like process at the base of the fore wings overlapping the hind wings 



(Lepidoptera) . 

 Labellum (-la), the expanded sensitive tip of the proboscis (Diptera). 

 Labium, the lower lip or second maxillae. 

 Labrum, the upper lip. 

 Lamella (-lae), a leaf-like plate. 

 Laminate, composed of leaf-like plates. 

 Lanceolate, tapering at each end, spear-shaped. 

 Larva (-vae), the earlier stages of an insect's life after hatching from the egg and 



before the pupal period. 

 Lateral, at or pertaining to the side of the body. 

 Ligula, the central part of the labium, borne by the mentum (Coleoptera) . 



