14 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



Type locality. — Lafayette, Indiana. 



Type.— Cat. No. 23981, U.S.N.M. 



Host. — Larva of poplar leaf-miner. 



Described from a single specimen reared September 24, 1915, at 

 Lafayette, Indiana, in the Bureau of Entomology, under Cage 

 No. C1269''. 



2. ADELIUS FASCIIPENNIS (Rohwcr). 



A7ioinopterns fasciipennis Kohwer, Psyche, vol. 21, 31)14, p. SO. 



Type. — In the United States National Museum. 

 A rather large species, mostly ferruginous, with conspicuously 

 banded wings. 



Falls Church, Virginia. 



Host. — Ectoedemia phloeaphaya Busck. 



Known onl}^ from the type series. 



3. ADELIUS COLORADENSIS, new series. 



Differs from fasciipennis., to which it is most closely allied, in its 

 smaller size, nuich darker color, and in having the fuscous bands on 

 the wings but poorly defined. 



Male. — Length 1.3 mm. Face one and one half times as broad as 

 long, very minutely punctate; vertex quite evenly rounded, and to- 

 gether with the temples and cheeks, very weakly punctate and 

 mostly shining; antennae slender, nearly as long as the body, meso- 

 scutum uniformly covered with closely placed separate punctures; 

 scutellum small, flat, distinctly punctate ; both mesoscutum and scu- 

 tellum rather opaque; mesopleurae punctate and opaque anteriorly 

 and below the longitudinal depression, quite polished above it; pro- 

 podcum practically impunctate, strongly shining, the dorsal aspect 

 with two indistinct median and two weak lateral carinae, the two 

 former bounding a shallow polished median furrow ; a distinct trans- 

 verse carina separating the dorsal and posterior aspects of propo- 

 deum ; stigma broad ; the metacarpus exceedingly short, hardly one- 

 fourth as long as the stigina; radius very short; legs somewhat 

 thickened; the posterior coxae small, polished; spurs of posterior 

 tibiae very short; abdomen depressed, a little narrower than thorax, 

 smooth, subpolished; first segment about as long as the following 

 combined. Blackish; face, clypeus, mouthparts, testaceous; anten- 

 nae mostly brown; vertex and temples dark brown; stemmaticum 

 black ; thorax piceous to black ; tegulae pale ; wings hyaline, the an- 

 terior pair with two poorly defined pale fuscous transverse bands 

 near the middle; legs including all coxae brown; abdomen brown. 



Type locality. — Fort Collins, Colorado. 



Type.— C^t. No. 23982, U.S.N.M. 



Described from 1 specimen labeled " Ft. Collins, Col." and bear- 

 ing Ashmead's manuscript name, Acoelius coloradensis. 



