LIMNOBIA. 293 



about five-sixths of the length, connected by a vcinlet at its tip with 

 the radial ; radial and cubital springing from a common petiole, which 

 they much exceed in length, and which proceeds from the subcostal at 

 a little before half the length of the wing, and forms an angle near its 

 base ; cubital connected near its base with the third externo-medial by 

 a veinlet which emits the first externo-medial ; the latter is connected 

 with the third externo-medial by a veinlet whose angle emits the second 

 externo-medial ; subanal connected with the third externo-medial by a 

 veinlet in a line with the inner end of the pentagonal discal areolet. 



SUBSECTION 1. 



First externo-medial vein emitted from near the fore end of the veinlet ; discal 

 areolet thrice longer than broad. 



23. xanthoptera, Meig. Zw. i. 141. 46 (1818); Mcq. ; Stain.; 

 Gimm. ; Schumm. ; Sta3g. ; Ross. (V.) ; Zett. Lutea, antennis apice 

 palpisque nigris, thorace vittis duabus discalibus maculisque duabus 

 lateralibus nigricantibus, alis luteis, venulis transversis cinereo-limbatis, 

 pedibus testaceis, fernoribus tarsisque apice fuscis. Long. 5-6 ; alar. 

 10-12 lin. 



Luteous. Palpi black. Antennas tawny, black towards the tips. 

 Thorax with two blackish stripes and a blackish spot on each side. 

 Wings luteous ; transverse veinlets clouded with grey. Halteres tes- 

 taceous, with brownish knobs. Legs testaceous ; tips of the femora 

 and of the tarsi brown. 



Not very common. (E.) 



SUBSECTION 2. 



First externo-medial vein emitted from the middle of the veinlet ; discal areolet 

 little more than twice longer than broad. 



24. maculata, L. F. 8.1736(1761); F.; Gmel.; Meig.; Schumm.; 

 Gimm. ; Zett. quadrinotata ? Meig. ; Gimm. ; Zett. Lutea, capite supra 

 fusco, palpis antennisque nigris, thorace vittis tribus nigris, alis sub- 

 cinereis nebulosis, maculis costalibus fuscis, abdomine fasciis abbreviatis 

 nigro-cinereis, pedibus fulvis, femoribus tibiisque apice tarsisque nigris. 

 Long. 5-6; alar. 10-12 lin. 



Luteous. Head brown above. Palpi and antennae black, the latter 

 tawny towards the base. Thorax black in front, and with four black 

 stripes, the outer pair short. Wings greyish, indistinctly mottled, and 

 with seven brown spots along the costa. Halteres testaceous, with 

 brown knobs. Abdomen with a transverse greyish-black spot on each 

 segment. Legs tawny, pubescent ; femora and tibiaB with black tips ; 

 tarsi black, except towards the base. 



Not rare. (E.) 



SECTION 13. 



Mediastinal vein ending at a little before two-thirds of the length of 

 the wing; subcostal ending at before five-sixths of the length, con- 



