NO. IfiST. 77//-; THORAX OF ISf^ECTt^—l^yODaiiA^^. 571 



12. The Greek termination on is replaced in all cases, for the sake 

 (if uniformity, by the Latin endin*;" kiii. Tlius, c/H/ncrtnii instcnid of 

 cplnie/'on, clytrnni instead of elytron. 



AhdonniKil steriHi (/-S'-A'>S'). — Tlie ventral })hdes of the abdominal 

 segments. The eighth and ninth carry the gona])0])hyses — the pieces 

 of the OA'ipositor or sting. 



Ahdont'nutl terga {IT-XT). — The dorsal plates of the abdominal 

 segments. In Hymenoptera the first is fused with the metathorax, 

 and is called the median segment or '' segment mediaire " of Latreille. 



Accessory coxal iilates {Cxa). — Small sclerites sometimes ocem"- 

 ring in the membrane at the base of the coxa, especially between the 

 coxa and the trochantin. GoiniMiyientary coxal j)lafe Crampton 

 (1909). 



Accessory trocltanttnal plate {T/ui). — A small sclerite sometimes 

 at the coxal end of the trochantin, but more closely associated with 

 the trochantin than with the coxa. 



Alula (Al). — The membranous lobe or lobes at the base of the 

 wings of Diptera and the elytra of some Coleoptera, consisting of an 

 expansion of the posterior part of the axillary membrane. Alula 

 Kirby and Spence (182G). AnaUappcnYoss (1905). 



Anal fold (AF) . — The line of folding between the anal area and the 

 preceding pnvt of the wing. The vena dividens, when present, is 

 developed as a secondarj^ vein in this fold. In Orthoptera the fold 

 is nearly always behind, the first anal vein, or starts behind it at the 

 base of the wing. 



Anal veins {A or lA, 2 A, etc.). — All the wing veins caudad of the 

 cubitus or fifth primary vein. 



Anterior noted ridge {ANR). — The anterior ventral marginal or 

 siibmarginal ridge of any notum, simple in immature forms, carrying 

 a variously developed prephragma in most adults, and often forming 

 a submarginal line {anr) on the dorsal surface of the notum. 



Anterior natal wing process {AA^P). — The anterior lateral process 

 of the notum hinging with the wing by the first axillary sclerite of 

 the wing base. Apopliyse humerale Chabrier (1820). Axillifere 

 Straus-Diirckheim (1828). Tergelhehel Voss (1905). Precondilo 

 Berlese (190G). 



Anterior phragma (Aph). — See Prephragma. 



Apodeme. — Xny internal chitinous projection of the body wall 

 whether a ridge, an arm, or a pedunculated disc or cup. 



Auditory organ of locust {Au). — The tympanum on the side of 

 the first abdominal segment in Acridiida^. 



Axillaries {1, 2, 3, 4i ^Ax, 3Ax, 3Ax, JfAx; indicated also by 

 transverse shading for the first and fourth, ohlique for the second, 

 and longitudinal for the third). The three, or sometimes four, small 

 sclerites at the base of the wing articulating it to the body. (See 



