NO. 1290. LARV.E OF MOTHS FROM COLORADO— DYAR. 393 



with the variation indicated. The ridges overhang the dorsal groove, 

 projecting as white riras, serrated by the projected pores, which appear 

 as little brown teeth. Ventral grooves more variable, not overhung 

 by the ridges. 



The eggs were ol)tained in July, but did uot hatch till the follow- 

 ing April. They are evidently scattered over the ground hy the 

 moths, where they lie all the autumn and winter. The dry climate 

 doubtless favors their preservation, while their peculiar ri})bed struc- 

 ture may serve as a safeguard against too much dryness. 



1 have described the larva previously.^ 



EPIPLATYMETRA COLORADARIA Grote and Robinson. 



Eggs. — Laid adherent; elliptical, one diameter considerably less, 

 rounded, rather squarely; both ends abruptly rounded, about alike, 

 not reall}^ truncate; center a little constricted and one end a little 

 depressed. About 14 low raised ridges, longitudinal, parallel, stop- 

 pijig at the rim at the micropylar end, reaching the other end confused 

 into reticulations. The}^ carry a double row of pores but obscure, 

 rounded; cross stri^ fine, obscure, parallel, not raised. Color pale 

 whitish green. Size 1.1 by 0.8 by 0.6 mm. The rim about the micro- 

 pylar flattening is more distinct than the ribs; the end is nearly 

 smooth, slightly radially reticulate near the rim. 



Stage I. — Head rounded, very slightly bilobed, olilique; very pale 

 brown, a little vertically streaked. Body moderate, normal, whitish, 

 a broad, straight, distinct, pale purple-brown band subdorsallv on 

 joints 2 to 13, not quite reaching the end, the pair separate, only 

 touching at the middle of joint 13, where they terminate. A similar 

 broad, pale-brown ventral band. Feet pale, ocelli black, sutures of 

 the moderate clypeus brown. 



The eggs were obtained from a female moth at Pine Grove, Colo- 

 rado, in the foothills at an altitude of 8,000 feet, but no suitable plant 

 could be found for the young larvae when they hatched. 



Family NOTODONTIDvE. 



ODONTOSIA ELEGANS Strecker. 



Egg. — Hemispherical, the base flat; opaquely white, not shining; 

 finely and densely cov^ered with small, white granulations, arranged 

 oV)scurely in vertical lines, a little denser about the vertex, which is 

 narrowly clear with a small central white space. Diameter 1.4 mm. 



Stage I. — Head bilobed, free, shining black, the sutures broadly 

 and lower parts of lobes diluted brown; width 0.65 mm. Body cylin- 

 drical, normal, anal feet elevated, segments subannulate. White, 

 shining, the quadrate cervical shield, anal plate, leg plates, thoracic 



lEntoni. News, V, 1895, p. 63. 



