218 PROCEEDINGS OF THE. NATIONAL MUSEUM. vol. xxxin. 



Maxillary 'palpi obsolete. 



Labial palpi moderate, curved, slightly ascending; terminal joint 

 much shorter than median. 



Ilaustellmn naked. 



Ocelli absent. 



Head and tliorax smooth. 



Forewings tapering, acute. 



Neuration 12 veins; 2, 3, and 4 separate, discoidal subobsolete 

 l>etween 4 and 5; 5 out of radius before <S, apparently connate with 

 (6 + 7 + 8) ; 6 and 7 stalked, inclosing the apex, 8 out of stalk of (6 + 7) ; 

 tornal branch of media traceable between 3 and 4, rest of media sub- 

 obsolete; 1*^ strongly furcate, 1' strongly developed outw^ardly. Hind- 

 wings -o, tapering, acute, margins not sinuate; cilia 2^. 



Neuration 8 veins; cubitus strong, as also 2 and 3; media weak, its 

 upper fork subobsolete, but becoming distinct as vein 5; discoidal 

 obsolete; radius strong, 6 and 7 stalked; 8 strong. 



Ahdomen moderate, wide at tlie base. 



Legs hind tibia? hairy above and l)eneath. 



This genus belongs to the group of ElacMsta Treitschke, from 

 which it differs entirely in its larval habits and in having all the 

 veins present in both wings. In ElacMsta vein 6 of the forewings 

 arises from the stalk of (7+8), while in C^oelopa4a veins 6 and 7 are 

 stalked, vein 8 arising from their stem. 



COELOPCETA GLUTINOSI, new species. 



Antennse fawn-whitish, barred on the upper side with fuscous. 



Palpi whitish. 



Head and thorax whitish, sprinkled with fawn. 



Forewings fawn-whitish, profusely sprinkled and shaded through- 

 out with fawn-ocherous, or fawn-brown, a few fuscous scales at the 

 extreme base of the costa, and at the base of the costal and apical 

 cilia in some specimens ; cilia fawn-ocherous, sprinkled on their basal 

 half with fawn-brown. 



Alar expanse. — 12-13 nun. 



Hindwings tawny gray; cilia rather paler, grayish fuscous. 



Ahdomen gray; anal tuft fawn-wdiitish. 



Legs whitish; hind tarsal joints barred with fuscous. 



Ty2^e.—Ma\e, No. 90511; female, No. 90512 in Mus. Walsingham; 

 paratypes, male and female, No. 10350, U.S.N.M. (11 specimens.) 



Habitat. — California, Mendocino County, Coal Creek Canon (Pot- 

 ter's Valley), June 14, 1871; larvse in galls on Eriodycteon glutinosum, 

 June 14, issued middle of June to middle of July, 1871: Lake County, 

 Scott's Valley (5 miles north of Clear Lake), June 17-19, 1871: Lower 

 Lake, June 22-23, 1871: Colusa County, Phip's Place, June 26, 



