196 



PSYCHE [Oct.— Dec. 



Sfaq-e fV. Me id roLiiided, tlittened, especially towards the moulh, apex rather full, 

 held flat; clear green, a brown black stripe from ocelli ; antennae and jaws black; width 1.3 

 mm. Body moderate, smooth, clear green ; a dorsal series of brown black segmentary spots 

 obsoletely connected by a shade; a trace of a white subdorsal line especially posteriorly; 

 substigmalal band brown black, segmentarily widened, covering the foot of joint 10 and a 

 line on that of 13. Thoracic feet green. A median ventral whitish line segmentarily wid- 

 ened. Tubercles invisible ; setae short dark. 



St(io-e V. Head rounded, slightly bilobed, held obliquely flat; translucent green, not 

 shining; clypeal sutures narrowly deepened ; pale green; antennae and a stripe on side red 

 brown ; width z mm. Body moderate, cylindrical, normal ; no shields ; smooth, tubercles 

 obsolete, setae minute, dark. Green; a diffuse white subdorsal stripe, faint on joints 2 and 

 13 ; a white addorsal patch centrally on the segments, divided by a black dash and surrounded 

 except anteriorly by blackish powdering on joints 5 to 9, faint, however, on 5 and 9. A series 

 of subventral brown black patches, obsoletely connected by a faint vinous shade, forming a 

 line on the thorax and staining darkly the foot of joint 10 and the anterior side of the foot 

 of 13. Subventral tubercles black marked; traces of lateral and stigmatal whitish lines, 

 faint and obscure. 



Larvae from Kaslo, British Columbia. They feed on willow. 



LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE. — XLIX. 



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



Deilinia pidveraria Hulst. One of Hulst's types before me from Rossland, 

 British Columbia, agrees well with my Kaslo specimens, from which this life history 

 was made out. 



Egg- Laid very slightly adherent, detached at a touch. Rather full and rounded, flatten- 

 ing showing only as a less diameter, depression only at extreme end of egg but there marked, 

 truncation marked, distinctly obliciue. Over 20 longitudinal ribs, 9 visible on the broad side, 

 sharp and high from a flat surface, narrow, compressed, slightly waved, ending at the edge 

 of the truncation where they project like spines seen in profile view. Cross-striae low, 

 distinct lines forming quadrangular cell areas and vertical lines on the ribs. The central 

 pair of ribs join near the antemicropylar end. A line half way to the micropyle on the 

 truncated end forms a row of cuneiform cells; micropyle reticulate. Color pale yellow, 

 turning red. Size .8 X -4 X -3 mm. 



Stage I. Head small, bilobed, pale luteous, shining, eye black, mouth brown. Body 

 slender, motion rapidly looping and vibrant; translucent whitish; a straight, rather broad 

 purple brown dorsal band the whole length and a similar lateral one. No shields ; tubercles 

 minute, dark; setae small, obscure. Later green in color but the bands unchanged. 



Stage II. Head pale creamy whitish, a mottled black band on the side behind the e>es; 

 antennae black ; a few dots at vertex ; setae black, stiff ; width .6 mm. Body moderate, nor- 

 mal, slender, green, smooth, no shields, setae stilt, black. A tlorsal blackish band present. 



