THE CANADIAN ENTOMOLOGIST. 159 



of body, 1. 1 74 mm.; width, .4 mm. Length of wing, 2.15 mm.; total wing 

 expansion, 4.60 mm. Length of antennal segments, I, .066; II, .047; 

 III, .44; IV, .34; V, .S3; VI, .09; spur, .622 mm.; total length, 

 1.935 mm. Length of nectaries, .242 mm. Cauda, .11 mm. 

 Eggs deposited on young twigs about base of buds. 

 (To be continued.) 



. NOTES ON SOME NORTH AMERICAN TINEINA. 



BY ANNETTE F. BRAUN, UNIVERSITY OF CINCINNATI. 



Argyj'esihia mmettella Busck. 



Argyresthia an7ietteUa Busck, Proc. U. S. Nat. Mus., XXXII, 12, 

 1907. 



The larvae of this species mine the leaves near the tips of the twigs of 

 the Juniper (Ju?iiperus commtmis L.). The leaf, except at its extreme 

 tip, is reduced to a mere shell, containing a few scattered grains of excre- 

 ment, as may be seen by holding the twig toward the light. In this man- 

 ner each larva excavates about four leaves, passing from one to another 

 through the stem. The mines are started in summer, and the larvae winter 

 within the mines, leaving them to pupate in May. The mined leaves 

 later become discoloured, and ultimately the entire end of the twig dies. 

 Where the miners are abundant, the numerous brownish dead ends of the 

 twigs give evidence of their presence. The cocoon, which is an open 

 meshwork of coarse silk, is attached to the upper side of a leaf near the 

 mine. The imagoes appear during the early part of June. 



Although the Juniper is widely distributed around Cincinnati, A. 

 annettella seems to occur only in three or four isolated spots, where I have 

 seen as many as 40 or 50 mines upon a single plant about five feet high. 



Lithocolletis tritiotella Braun. 



Lithocolletis trijiotella Braun, Ent. News, XIX, 99, 1908; Trans. 

 Am. Ent. Soc, XXXIV, 279, 1908. 



Since the original description of^ this species was published, I have 

 been successful in rearing four specimens from small tent mines on the 

 under side of leaves of Silver Maple (Acer saccharifwm L.), collected in 

 Clermont Co., Ohio. The mines are extremely small, about 8 mm. long, 

 and much wrinkled at maturity. The pupa is enclosed in a loose web of silk. 



The moths, while agreeing in all essential particulars with the types, 

 are somewhat larger, and have a third costal white streak, which is often 

 obscure and entirely unmargined. 



May, 1912 



