CYRTID^ 



449 



Synonyviy. — The term CyrtidcB was defended by Osten Sacken (Cat. N. Amer. 

 Dipt., ed. ii., p. 239) against Acroceridce and Henojndoe ; the name Henopidce, which 

 was adojited by Erichson, is clearly inadmissible as the genus Henops had previously 

 been described under the name of Ogcodes. The genus Cyrtus is older than Acrocera 

 and its meaning is applicable to the whole family, while the word Acrocera is absolutely 

 contradictory to most of the genera and was probably given to indicate its contrast 

 with them. The term Cyrtidcn was used by Newman in 1841, and he had used 

 Cyrtites as early as 1835 (Entom. Mag., ii., 389). A few species of Bomhylidoi 

 (such as Glabelhda) have at times been mistakenly placed in the Cyrtidoe, but the 

 discovery of the importance of the character afforded by the enormous thoracal 

 squamae has relegated them to their proper place. 



Types of venation of BinTiSH Cyrtid^. 

 b 2 ' , 



Fig. 257. — Oncodes gibbosus. 



1* I 



f3- g'^ 



Fig. 258. — Acrocera globulus. 



All the veins (except the small cross-vein) and cells are distinct in the type-wing 

 of Lasia (fig. 259 A), but many are obsolete in the type-wing of Oncodes (fig. 257), and 

 the venation is still more imperfect in Philopota (fig. 260 E) and Acrocera (fig. 258). 



Longitudinal (or long) veins. 

 a Costa {or costal vein), 

 h Mediastinal {or auxiliary) vein, 

 c Subcostal {or Ist longitudinal) vein. 



d Radial {or 2)id longitudinal) vein, not present in the type-wings given above. 

 e Cubital {or 3rd longitudinal) vein. 



/ 



^■^ T ower branch i °^ ^^® cubital fork, not visible in the type-wings given above. 



Discal {or Ath longitudinal) vein. 



f 1 Upper branch of the discal vein, very faint in Oncodes. 



P Second discal veinlet, faint in Oncodes. 



P Third discal veinlet. 

 Postical {or 5th lojigitudinal) vein. 



I^Eo^^trhjof^'P^ti-'fo* 



2f 



