March, wo.) PSYCHE. 177 



mens, before the Entomological society orifice in mounted specimens under 

 of Washington. 'I'he size of the genital cover-glass is i mm. in diameter. 



Measurements of the antennal segments cf the three full grown females, the length of 

 which were 54 mm. 5 broad and 4 high. The measurements in the tables are in micromilli- 

 meters. 



Segments. i 2 34567891011 



136 120 16 56 52 64 64 80 80 80 180 



136 I20 16 68 53 68 76 76 80 So 180 



130 120 136 60 52 68 76 80 80 80 160 



120 120 136 64 48 64 76 80 80 80 180 



120 120 136 52 40 72 56 80 80 72 168 



120 120 I20 60 48 64 64 68 76 68 168 



Measurements of the antennal segments of the younger forms. 5 4 mm. long, 3 broad, 

 24 high, 10 and i: segmented. 



Segments. 



LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE. — XX. 



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



Heliomata cycladata G\\.. other end; raised, coarsely beaded with 

 Egg. Laid singly on the edge of a leaf nearly contiguous clear granules, a little 

 or in a hole or on end on the petiole. Flat- waved and also slightly flexuous in course, 

 tened cylindrical, rounded, one diameter dis- joined by thick, curved cross-striae, a little 

 tinctly shorter, ends flattened, the basal one irregulai and not always quite parallel, one 

 the most so, but rounded. Eight ribs pro- to each bead. At the base the sculpture 

 jecting at the rim of the micropylar area becomes confused into rounded pit like retic- 

 increasing to a few more by interpolation at ulations of which confusion the short inter- 

 about two-thirds the distance toward the polated ribs seem a part. Coarse lumpy 



