898 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvn. 



ventral line. Ventral tubercles white like the dorsal ones; set^e 

 coarse, white, not long; all feet green, the abdominal ones normal on 

 joints 10 and 13. 



Cocoon a net of ^^ellowish silk among- the leaves. Pupa green with 

 a white dorsal stripe. 



Food plant, currant {Rihes sanguineuvi). 



MESOLEUCA ALBOLINEATA Packard. 



Five specimens, June 3, (], 11, Jul}^ 21 (Bear Lake, Mr. Cockle), 

 August 6, and one from Mr. Cockle's collection, July 18, 1902. Eggs 

 from a captive female proved infertile. 



Egg. — Elliptical, rounded, one diameter less, scarcely any depres- 

 sion, truncation rounded; densely finely reticulate, the reticulations 

 elongate in the long diameter, hexagonal, normally alternating, rather 

 low, broad, and rounded, the surface all over slightly shagreened. 

 Pale 3^ellow; size, 0.8 by 0.6 by 0.5 mm. 



MESOLEUCA VASALIATA Guenee. 



Seven specimens. May 31, June 2, .5, 0, 7, 8. The larvw were bred 

 on thimbleberry. I will describe them in Life Histories of North 

 American Geometridw, LVIII. 



MESOLEUCA SIMULATA Hubner, var. OTISI, new variety. 



Eleven specimens, all females, September 8 (Glacier), (Field). 

 The specimens are stone gra}^ throughout without an}" of the brown 

 tint seen in examples from the Alps of Europe, but all the lines and 

 markings are exactly alike. The species has not been .hitherto 

 recorded in America. The American form is named for my son, Otis 

 P. Dyar, who assisted me in collecting the specimens. The form 

 resembles Hydriomene contractata Packard, as Mr. G. W. Ta3dor 

 pointed out to me, but it lacks the distinct thoracic tuft of that form 

 and is without its warm brown tint. 



Type.—Qmt. No. 710.5, U. S. National Museum. 



HYDRIOMENE SORDIDATA Fabricius. 



Two hundred and tiftj-nine specimens, July 15, 21, 21, 26, 27, 31, 

 August 11 (South Fork Creek), 12, 13, 17, September 9 (Field), San- 

 don (G. C. Robbins). Very variable in the markings, but constant 

 in color, all examples being shades of brown, greenish gray, and 

 black, none of the light forms appearing. All the specimens are 

 rather large. The larva was not obtained. Living females were 

 repeatedly confined in jars, but all refused to deposit eggs. 



