325 



Tischeria pruinosella Chamb. 



A single specimen of this insect is in my collection. It was received from Belfrage 

 from Texas. 



Tischeria pulvella Chamb. — Tischeria longe-ciliata F. & B. 



These species are only known to me from the descriptions. 



Tischeria heliopsiella Chamb. 



Tischeria heliopsiseUa Chamb. 

 n. syn. — T. nolekenii F. & B. 



This species is recorded by Chambers as bred from leaves of Heliopsis Icevis and 

 Ambrosia trifida in Kentucky [Cin. Qr. Jr. Sc, II, 113-4 (1875)]. I met with it also on 

 Mount Shasta, Siskiyou County, Cal., in August, 1871, at an elevation of about 

 6,000 feet, mining the leaves of a species of Ambrosia ; the mine occupying the whole 

 width of the narrow leaflet. The specimens were bred in the same month. Its gen- 

 eral aspect is that of a Bucculatrix. Two specimens received from Monsieur Ragonot, 

 collected by Boll in Texas, labeled " Tischeria nolekenii F. & B.," agreeing in all re- 

 spects with the description by Frey & Boll [Stett. Ent. Zeit., XXXVII, 220 (1876)] 

 have been compared with Chambers' description of heliopsiseUa, and also with a spec- 

 imen, kindly lent me by Miss Murtfeldt, which she received from Chambers, bearing 

 the label " Tischeria heliopsiseUa Chamb. Ky." I have no hesitation in regarding 

 nolekenii F. & B. as a synonym of heliopsiseUa Chamb. 



Tischeria ambrosiella Chamb. 



I have four specimens of this species bred from Ambrosia trifida by Miss Murtfeldt, 

 at Kirkwood, St. Louis, Mo. Chambers also records it as bred from Ambrosia arte- 

 misicefolia on Miss Murtfeldt's authority [Cin. Qr. Jr. Sc, II, 113 (1875)]. It is appar- . 

 ently a good species and distinct from heliopsiella. 



Tischeria ceanothi sp. n. 



Antennas, pale grayish-brown, strongly ciliated in the<?. 



Palpi, pale grayish-brown. 



Head, roughly clothed with pale grayish-brown scales tending to whitish in front; 



face whitish. 

 Fore-wings, grayish-brown, with a faint purplish tinge, in some specimens somewhat 



paler along the dorsal margin below the fold, a faint indication of a small darker 



spot about the anal angle; cilia pale grayish-brown. Under side rather shining 



grayish, slightly darker than the hind-wings. 

 Hind-wings, pale grayish ; cilia scarcely lighter. 



Abdomen, the same color as the hind-wings, anal tuft inclining to ochreous. 

 Legs, luteous; anterior pair darkened with fuscous and having the tarsal joints 



obscurely spotted. 

 Exp. al., 6 mm . 

 Habitat, California. 

 Type, $ 9 . Mus. Wlsm. 



The larva mines the upper side of the leaves of Ceanothus divaricatus Nutt., making 

 at first a narrow mine which gradually increases in width, but is apparently never 

 wider than about one-fifth of the leaf; several mines are to be found in a single leaf. 

 I have one before me which contains five. The larva changes to a pupa within the 

 mine. There is no indication whatever of its presence on the under side of the leaf. 

 I met with it at the head of the Noyo, Mendocino County, Cal., on the 8th-llth 



