NO. ir,S7. THE THORAX OF INI^ECTt^—i<\()D<lRAt<lH. 575 



Gonapophi/sc^i (Oon.) — The cbitinoiis procossos of tho oi^-htli iiiul 

 ninth abdominal sterna Avliich form the ovipositor or .sting. Two 

 arise from the eighth segment and four from the ninth. Gonapo- 

 phijses Huxley (1878). 



GuJa (Gif). — The throat region, specifically a plate forming the 

 posterior part of the floor of the head in Neuroptera and Coleoptera, 

 bridging the space between tlu' gena> and supporting the labiiun. 

 Probably derived from the sternum of the microthorax. JikjuTudi 

 and giila Kirby and Spence (ISiiCi). Piece hadlaire Straus-Diirck- 

 heim (1828), Lacordaire (1884). Gida Newport (1830). 



Tlalfer {Til). — The balancer-like representative of the wing in the 

 metathorax of Diptera. It is wing like in pupa? of Tipulidae (173, 

 AY.,). Ilalter Fabricius (1778). 



Head (11). — Formed of the first five or six embryonic metameres 

 consolidated, with the fused appendages of the next or microthoracic 

 segment attached and forming the labium. 



Intevsegmentdl memhrane (Mh). — The membranous area betw^een 

 two segments. "Where phragma? are present the membrane extends 

 from the dorsal edge of the posterior lamella of the preceding 

 phragma to the dorsal edge of the anterior lamella of the following 

 phragma. 



Jur/um (Jif). — The lobe at the base of the fore wing in the lower 

 Lepidoptera serving to lock the wings together during flight. The 

 juguni is strengthened by the third anal vein (202) and is, hence, not 

 homologous with the alula of Diptera and Coleoptera. Pterygimn 

 Kirby and kSpence (1826). 



KatopJeure {Peps) . — See Preeqnstermim. 



Lateral notal emargination {Em). — A deep notch on the lateral 

 edges of the meso- and metanota between the notal Aving processes. 



Media {M). — The fourth principal vein of the wing. 



Median notal groove {G). — The longitudinal median groove of the 

 metanotum in Euplexoptera and Coleoptera. Gouticre mediene 

 Straus-Diirckheim ( 1828) . 



Median plates of the wing hase {in). — The variable plates in the 

 median region of the base of the wing, associated with the bases of 

 the median and cubital veins. Retro-median Amans (1885). Ver- 

 mittelungsplatte and vordere Analgelenhplatte Voss (1905). 



Median segment {PP). — The "segment mediaire " of Latreille 

 (1821), or the first abdominal segment in Ilymenoptera, which is 

 transferred to the thorax and solidly fused with it. It always bears 

 the first abdominal spiracles. Segment mediaire Latreille (1821). 

 Propodeon Xewman (1833). 



Mesothorax {Mes). — The second thoracic segment. Segment alaire 

 anteneur Chabrier (1820). Mesothorax Audouin (1824). First seg- 

 ment of aPitrinieus Kirby and Spence (1820). Prothorax Straus- 

 Diirckheim (1828). 



