EXTERNAL ANATOMY OF INSECTS. 377 



f Neura Analis (the Anal Nervure). The principal 

 nervure nearest the interior or posterior margin, 

 with which it includes a space often subtriangular, 

 traversed in most Diptera and many Hymenoptera 

 by another nervure; and in many Tegmina and 

 Hemelytra by several a . In these kinds of upper- 

 wing it is in many cases accompanied by a fold ; and 

 the part between it and the interior margin seems 

 often capable of separate motion. 

 g Neura Axillari s (the Axillary Nervure). The short 

 nervure, where there is only one, intervening be- 

 tween the anal nervure and the interior margin : 

 replaced in some Muscidte by a spurious ner- 

 vure 5 . 



h Neur^e SpuRiiE (the Spurious Nervures). Very ob- 

 solete nervures, sometimes found in addition to 

 those usually occurring; as in Syrphus . 



E Stigma (the Stigma). A corneous spot or plate, sup- 

 posed to contain fluid, in the anterior margin of the 

 upper wings; often produced by the conflux of the 

 costal and postcostal nervures d . 



F Parastigma (the Parastigma). A corneous spot be- 

 tween the costal and postcostal nervures, distinct 

 from the Stigma observable in the Libellulina. 



G Lobuli (Lobuli). One or more rounded portions of 

 the base of the wing, separated from the rest by fis- 

 sures peculiar to the Muscidce, and the under-wings 

 of some Hymenoptera e . 



f Tegulte (the Tegidce). Small corneous concavo-con- 



a Plate X. Fig. 5 — 15. n\ b Ibid. o\ 



c Ibid. Fig. 14. p: d Ibid. Fig. 11. m '". 



e Ibid. Fig. 14,15. ri" . 



