200 PSYCHE [Oct.— Dec. 



LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE.— LII. 



BY HARRISON G. DYAR, WASHINGTON, D. C. 



Deilinia rectifascia Hulst. I have Hulst's unique type, a female. A second 

 female from the same place (Easton, Washington : Koebele) was named Cymato- 

 pJiora rectifascia by Dr. Hulst. A third female from Oregon (Koebele) was, how- 

 ever, named Deilinia falcataria ; but this is, I think, erroneous. A male from 

 Rossland, B. C, does not show a fovea below on the fore wings while it does on 

 the hind wings and it would therefore seem that the species, while a good one, 

 should be placed in Deilinia rather than in Cymatophora. Hulst had no male in 

 writing his original description, which would render his generic reference uncertain. 



Eg-gi. Laid weakly attached, some falling loose. Elliptical, wedge shaped in side view, 

 tiattenings not marked; truncation distinct, rounded. A series of low ribs running to the 

 truncated rim, about lo visible on the broad side, joined by fine cross-striae, forming elongate 

 rectangular cells, the whole ill defined and dim, not very sharply raised yet considerably so ; 

 all minutely frosted shagreened ; truncation convex, reticular. Color pale yellow, turning 

 red. Size .8 X -5 -4 mm. 



Stage I. Head rounded, pale luteous, a darker shade over vertex, eye black, mouth 

 brown. Body slender, pale whitish, a dark red dorsal and lateral stripe on joints 2 to 13. 

 Tubercles and setae minute; feet pale; no shields. 



Sfage II. Head slightly- bilobed, oblique; whitish, a brown shade over vertex and a 

 band below ocelli; width .55 mm. Body moderate, yellowish white; broad dorsal and sub- 

 ventral dark brown bands, even, straight, reaching the ends, but not staining the feet. 

 Tubercles minute, black; setae short, fine; feet pale ; no shields. 



Stage III. Head rounded, clypeus and sutures slightly depressed; pale yellowish, 

 brown shaded and mottled over the lobes; antennae, jaws, and a band behind eyes dark; 

 ocelli black; width .8 mm. Body moderate, green from the food; dorsal band broad, black- 

 ish brown, diluted with greenish,- showing small intersegmental black dashes and edged bv a 

 faint, pale, subdorsal line. Subventral band present, broken into shaded patches, or obso- 

 lete. Tubercles invisible ; setae short, black ; feet pale ; a double stigmatal obscure pale line. 



Stage IV. Head as before ; width 1.15 mm. Body green ; a faint yellowish subdorsal 

 line; a series of small brown dorsal intersegmental spots, confluent on the thorax, approxi- 

 mate by contraction on joints 12-13; ^ white adventral line. Feet pale; setae black. 



Stage V. Head round, scarcely bilobed, lobes full ; green on face, vertex i-ed brown, a 

 pale yellow band on lobe above, running to ocelli, with brown again below it, antennae long, 

 light red; width 1.6 mm. Body moderate, uniform, anal feet spread triangularly; segments 

 slightly folded annulate. Light green, opaque, a series of dorsal intersegmental patches of 

 red brown mixed with yellowish, on thorax and joints 10-13 forming a nearly continuous 

 band. Foot of joint 10 brown ; of 13 brown behind. Thoracic feet green ; tubercles 

 small, dark, in pale rings; setae dark ; venter white subpruniose. 



Larvae from Kaslo, British Columbia, feeding on Ceanothus. 



