Pomona Cui.r.KCK .Toihn m, (>i- KNToMni.oiiv 831 



"1. 'I'lic pleura' ill .1. inm ricniin :\vc iiiiiroldrdiis orlircoiis; in A. senilis they 

 art' rcililisli-lu'Dwii aliovi' an<l Ix'low, iimrc ochreous in tliu middle. 



2. The marginal cross-vein is inismt in A. americana, absent in ^1. senilis. 



3. The genitalia are different in tlie two species but as we have only one 



male, T do not want to dissn-t it. without which I .■annot proprrly make 

 out tile structure."' 



Adelphomyia cayuga sp. n. 



Large sjieeies (length. 9. ■") nnn. ) ; radial eross-vein indistinct: cell .Ml 

 absent. 



9 . length T) mm.; wing .").l mm. 



Kostrum. palpi and antenme light Imjwii. Front, vertex and (jccipiit 

 brown. 



Thoracic pra'scutum unilorm light brown without apparent dorsal stripes; 

 scutum, seutelluni and postnatum lighter-colored yellow. I'leiira' light 

 brownish-yellow, brighter colored on the metapleura; ami on the posterior 

 portions of the inesojileura?. Legs rathiM- uniform light brown throughout. 

 Wings rather uniformly sulfused with dark, memlirane distinctly darker 

 colored than in americana or Diinula ; veins light brown. Venation (Figure 260, 

 Bi — Sel rather long, about live times as long as Sc2 ; R2+3 in a line with R2; 

 cross-vein ;• not evident: basal deflection of R4-|-5 in a line with cross-vein 

 r-iit; cell .All absent, i. v.. .Ml and M2 fus.ed to the wing-margin. A .short 

 pubescence in the apical p(]rtions of the wing, tips of cells Kl, Ii2. R3, R5, .M2 

 and I\I3 being included. 



Abdominal terguni and sternum uuifornd.v brown. 



Ilolotype 5 (balsam slide i. Vanishing lirook, Ithaca, N. Y. : Aug. 16, 

 1912. (Alexander, coll.) 



Type in author's collection. 



