ANNETTE F. BRAUN. 303 



and reaches a little beyond the costal streak beyond it; the second costal streak 

 is small and points slightly outwards; the third is nearly perpendicular; the 

 fourth points slightly inwards from a little before the apex ; these three are all 

 dark margined on their inner edge; opposite to these are the second and third 

 dorsal streaks; the second is triangular, wider at the base and dark margined 

 internally, its black dusting communicating with a patch of similar blackish 

 scales at its apex, extending to the second costal streak above it; the third dorsal 

 streak is short, pointing inwards and. dark margined on both sides, its outer mar- 

 gin being continuous with a dark line at the base of the cilia, which encircles the 

 tip of the wing, reaching to the exterior costal streak ; within this line, but sep- 

 arate from it, is an elongate apical spot of somewhat disconnected blackish 

 scales, the cilia pale grayish. 



"Hindwings and cilia pale grayish. Abdomen dark gray above, anal tuft 

 somewhat paler. Hind tarsi white, tipped with grayish and two grayish saffron 

 spots above. Expanse 9 mm.' 1 



" The larva feeds in mines on the underside of Alnus incana 

 toward the end of June in Colusia County, Cal., the perfect insects 

 emerged in July, 1871. Seven specimens were bred, and the species 

 was also met with on the wing at Burney Creek (near Pit River), 

 Shasta County, Cal." 



The above is Lord Walsingham's description. 



The mines also occur upon the upperside of the leaf. I have bred 

 a large series of specimens on a species of Alnus from Alameda 

 County, Cal., where the mines are very common on the upperside 

 of the leaf, but appear very rarely on the lower side. Some speci- 

 mens have the basal streak faintly margined above, especially 

 toward the apex. 



Litliocolletis populiella Chambers. 



Plate XXII, Fig. 11. 

 Lithocolletis populiella Chambers, Bull. Geol. Surv. Terr., iv, 101, 1878. Dyar, 



Bull. 52, U. S. Nat. Mus., 1902, No. 6331. 



"Palpi, head, tnft, antennse, under surface of the thorax, legs, and abdomen 

 pure snowy white; upper surface of abdomen and forewiugs pale golden ; there 

 are three white longitudinal streaks on the thorax (one median, and continuous 

 with a dorso-basal white streak on the wings, the other two passing over the 

 tegulse, and continuous with a median basal white streak on the wings) ; there 

 is also a costo-basal white streak on the foi'ewings, and these three basal wing 

 streaks are of about equal length, and less than one-fourth of the length of the 

 wings. Immediately behind the dorso-basal streak, and scarcely distinct from it 

 (probably sometimes confluent with it), is the first dorsal streak, which ap- 

 proaches a square form, and is dark margined before and above. Almost oppo- 

 site to this dorsal streak, bu^ a little behind it, is the first costal streak ; it is 

 oblique, not pointed, and is dark margined before. The second costal and second 



TRANS. AM. KNT. SOC.. XXXIV. OCTOBER, 1908. 



