400 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



shield large, pale luteous, black rimmed posteriorly. Tubercles large, 

 colorless, a little elevated, normal, iv+v. Male glands large, dark 

 purple. Feet and setge pale, no marks. 



Abundant on the Cerocarpus imrv^follw^^ folding the leaves and liv- 

 ing within the houses so formed; pupa in a folded leaf. Some of the 

 bushes suffered severe]}^ from these larvw. The moths were common 

 flying over the dry foothills in July among the Cerocarpiis bushes at 

 Platte Canyon and Manitou; doubtless also throughout the range. 



CACOECIA ARGYROSPILA Walker. 



Larva. — Head pale luteous brown, a black line on sides and ocelli 

 black, jaws brown. Body green, cervical shield all green, transclu- 

 ent, tubercles pale, a little elevated, normal; no marks. 



Another larva had the head pale brown with a dai'ker line along the 

 side on ocelli and jaws. Cervical shield all transclucent green with a 

 trace of brown tint, unbordered. Body all green; first pair of tho- 

 racic feet lilack, the rest green. Dorsal vessel dark. 



Another larva had the head black, diluted with whitish irregularly 

 on the face; thoracic feet black ringed, those of joint 4 less strongly 

 so. Cervical shield black edged, luteous centrally, shading to whitish 

 transcluent in front. Body all green. 



Another larva had the head greenish testaceous, black below at 

 mouth but epistoma pale; width 1.5 nmi. Cervical shield translucent 

 greenish testaceous, shading to brown-black at the edges. Body trans- 

 lucent sordid green, slightly olivaceous dorsally, tubercles broadly 

 paler, elevated, rather large; segments coarsely 2-annulate dorsally; 

 male glands faintly yellow. Setse long, pale, normal; ia+ib, iia+iib, 

 iv+v. No anal plate. First two pairs of thoracic feet blackish 

 marked, the last pair brownish. 



I give these several descriptions to illustrate the variability of 

 this larva. It is especially unfortunate, as the larvae of several other 

 Tortricids are closely similar to this and hard enough to distinguish 

 anyway. The species occurred on oak, willow, ash, and box elder, 

 generally distributed but not locally very abundant. 



CACOECIA VIVIDANA Dyar. 



Larva. — Head slightly bilobed, flat, jet-black or partly diluted on 

 the face; cervical shield luteous except for dots at the borders. Body 

 slender, cylindrical, the feet short, segments irregularly 3-annulate. 

 Sordid transcluent green, a clearer dorsal and subdorsal line; tuber- 

 cles round, white, distinct, with coarse white sets; iv+v. Spiracles 

 black ringed; thoracic feet black with paler joints, abdominal ones 

 pale. Dorsum faintly olivaceous shaded. Male glands in joint 9 

 showing as an ochraceovis shade. 



"Webbing up the leaves of Biibus deliciosus in the Platte Canyon, 



