76 INSECUTOR INSClTLli M:eNSTRUUS 



R. W. Leiby from pupsa of Malacosoma americana (Expt. No. 

 50-1). 



Differs in coloration from description of Meigenia websteri 

 Towns., 1891, Can. Ent., XXIII, 306-7, only as follows: Third 

 antennal joint of female very largely reddish, that of male 

 wholly black. Scutellum quite blackish, with only faint indi- 

 cation of lighter on margin. Blackish hind margin of inter- 

 mediate abdominal segments very narrow. 



Holotype, Cat. No. 20308, U. S. Nat. Mus., male. 



A female specimen which I determine as websteri T. agrees 

 with description, except that third antennal joint is broadly 

 reddish basally, and appears to be congeneric. In fact, mala- 

 cosomcv may prove to be only a subspecies of zvebsteri. 



This form is very apt to be confused with Masicera pau- 

 ciseta Coq., 1897, Rev. Tach., 114, type of Masiceropsis T., 

 and perhaps only a subspecies of Phorocera promiscua Towns., 

 1891, Psyche, VI, 84-5. It differs from Masiceropsis by 

 broader front, longer antennje of female, no well-developed 

 macrochset« on first abdominal segment, apical crossvein ap- 

 proximated to hind border of wing, hind crossvein farther 

 from bend of fourth vein ; and anal segment without true 

 discals, but with only submarginal or subdiscal macrochaetse. 



Euzenilliopsis, new genus. 



Genotype, Buzcnilliopsis diatro'ce, new species. 



Differs from Busenillia as follows : Male without proclinate 

 f ronto-orbitals ; male front on posterior half about three- 

 fourths of one eye in width. No discal macrochastse on inter- 

 mediate abdominal segments in either sex. Apical cell very 

 narrowly open, almost closed. 



Euzenilliopsis diatraeas, new species. 



Length of body, 5 to 6 mm. ; of wing, 3.75 to 4 mm. Four 

 males and three females reared by Mr. U. C. Loftin in Cuba 

 from larvae of Diatraa saccharalis, 1915 ; and one male, Audu- 

 bon Park, Louisiana, issued January 25, 1916, from pupa 

 found in cane December 8, 1915. 



