804 PROCEEDINGS OF THE NATIONAL MUSEUM. 



Brown spots around the spiracles and above tubercle vi. A few whit- 

 ish mealy dots on the sides; feet, green. 

 The larvte Avere fed on birch. 



APATELA MANSUETA Smith. 



One specimen, July 21. I g-reatly regret that the life history of 

 this pretty species was missed. Mr, Cockle captured a female speci- 

 men, now in his collection, but unfortunately killed it before noting 

 its identity. 



APATELA DISTANS Grote, var. DOLOROSA Dyar. 



Three specimens, June 16, 10, 25. 1 have another from Rossland, 

 June 3, 1899 (W. K. Johnson), The specimens are darker than east- 

 ern distmis, both in the tone of the gray ground and the amount of 

 black shadings. The larvte seem to vary more in color than eastern 

 Iarv5i3, but this may be because I have a larger series of the western 

 form. The red subventral shade, so conspicuous in eastern distans, 

 is lacking in all my specimens. 



£"(/(/. — Flat, circular, low domed, laid singly or in groups partly 

 overlapping. Ribs, about 60 around the margin, diminishing by 

 alternation toward the vertex, distinct, linely waved, almost beaded; 

 diameter, 1.1 mm.; height, 0.3 mm. 



Stage I. — Head shining black, mouth brown. Body whitish, joints 2 

 to 10 clear vinous dorsalh^, 11 weak, white, 12 and 13 brown. Warts 

 large, ))lackish; i many haired, ii to v single, vi absent; leg shields 

 faintly infuscated l)earing a hair; on thorax tubercles ia and ib joined 

 at base, iib small, separate, no subprimaries. Feet pale. Hairs 

 blackish, spinulose, cervical shield infuscated. Later onl}^ joints 5, 

 8, 9, and 12 are vinous red, the other segments fading to white; the 

 red brown marks are sharply edged and there are slight angular ones 

 on the white segments. 



Stage II. — Head bilobed, angular, shining black; width 0.6 mm. 

 Body robust, the dorsum serrate b}^ the projecting tubercles; sordid 

 white on the sides and on joints 10, 11, and 13. Dorsal warts broadly 

 dark vinous, joints 5, 8-9, and 12 marked with the same color. Hairs 

 black, rather bristly. Later a continued dark dorsal stripe and sub- 

 ventral mottlings; area a})out tubercle iii of joints 3— t, 6-7, 10-11 

 white. The larva tapers behind; joint 12 is prominent dorsall}'. 



Stage HI. — Head bilobed, apices sharp, median suture depressed; 

 shining black; width O.S mm. Body robust, joints .5 and 12 a little 

 elevated; warts large, black, hair thick and l)ristly, black with a few 

 pale ones intermixed. The body is mostly dark, lighter between the 

 warts on joints 6, 7, and 11. Feet all dark. 



Stage lY. — Head rounded quadrate, flattened ])efore, shining black; 

 width 1.5 mm. Body black except subdorsally on joints 6-7 and 10-11 

 where it is diluted yellowish. Warts round, black, elevated; hair 



