( 211 ) 



ADDENDA. 



T T AVING had an opportunity, since the prece- 

 ding pages of this vokime were printed, of ex- 

 amining a large number of Hymenopterous insects, 

 and having likewise made some forther observations 

 upon the foregoing families, more particularly with 

 respect to the wings, that had before escaped me, 

 I shall subjoin them here, beginning with the latter. 



I must first observe in general, that the surface 

 of every superior wing may be looked upon as divi- 

 ded into three parts, which may be denominated 

 Alas Basis, Medium, et Apex. 



Basis. Alae portio thoraci proxima ex areolis 

 tribus elongatis constans, intermedia breviori, inter 

 alae nervos divergentes inclusis(^). 



Medium. Alae portio intermedia, reticulata, are- 

 olas sex vel septem, figura et magnitudine varias, 

 et anastomosin includens(r). 



jipex. Alae portio extima, dilatata, oblique trun- 

 cata, in angulum obtusum cum margine tenuiore, 

 f, basis areola infima, subtus concurrens {s -, in are- 

 olas tres subaequales, mediantibus venis duabus rec- 

 tis, saepius distincta; superficie undulato-crispante, 

 plerisque punctulata(^). 



{q) Tab. 3. ^*. b. fig. 5. d. (?) Ibid, g, 



(^)Ibia.-. (Olbid./. 



p 2 The 



