February 1900. J FSYCHE. 21 



LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE. — X. 



BY HARRISON G. DYAR, WASHINGTON D. C. 



Thetiria pullucidnria G. & R. A inotli line is seen, edging the brown above, 



was submitted to Dr. Hiilst hir determin- Ratlier slender, smooth. 



ation. Tlie lar\'a is previously undescribed. Stage III. Head whitisli brown, a 

 though the pupa has been described by Dr. bri^hier line on the face of eacli lobe, brown 

 Packard (5th rept. U. S. ent. comni., 777, as only narrowly in the sutures and on the pos- 

 seminiidaria). In the following there is a terior edge; width .8 mm. Body light sor- 

 small chance for error. The eggs and stage did green, faintly, finely lined with pale, the 

 I were obtained from a moth of ;S«//?/f;'a'«r/«, subdorsal line most distinct. Dorsal space 

 but the larvae would not feed. (They were crossed by dorsal and addorsal lines, tuber- 

 not given pine, as I did not know their cles i and ii not contrasted. Lateral band 

 food plant at the time.) The rest of the life double, consisting of a shade below the sub- 

 history is from larvae collected on pine, but dorsal line, a few dots, dark spiracles 

 not bred. However, I have a moth bred and a subventral line; venter obscurely 

 from pine by Dr. Packard, establishing the lined and with dark medio-venti al patches, 

 food plant. Feet pale; a heavy dark subdorsal spotting 



Egg Roundly elliptical, flattened above on thorax, 



and below, a little wedge shaped from side StagelV. Head round, bilobed, whitish, 



view, perfectly rounded; one end truncate, dotted thickly with pale brown on the upper 



the truncate part bulging in its center. Neat- half and a few dark brown dots at eyes and 



ly reticulate, the cell areas flattened. Pale apex of clypeus ; width i mm. Body pale 



green, somewhat grayish, shining. Size wood brown, almost whitish, finely longi- 



.8X-6X 5 mm. Laid singly in captivity. tudinally lined. Dorsal space with three 



Eggs found in nature were laid on a needle pale brown, and four whitish lines; a sub- 



ofthepineina row of two layers, seven in dorsal row of streaks with slight irregular 



the lower layer, three in the upper one. marks below and dark spiracles; a narrow 



Stage I. Head round, brown black, clvpe- subventral line. Ventral lined like the dor- 



us pale ; width about -35 mm. Body slen- sum, pale brown and whitish, and a medio- 



der, normal white, with five smoky, brown- ventral series of large dark brown spots, 



black, transverse bands on joints 5 to 9 and Feet pale. 



slight narrow ones on joints 2 to 4 ; feet pale. Slage V. (abnormal, interpolated) -Head 



Very similar to T. atlia$ia> ia, but the color 1.2 mm. Coloration as in the next stage, 



of the bands is not quite so dark and they are Stage V. (normal) Head rounded bilobed, 



a little broader and connected by a narrow full; pale greenish, the tubercles and sutures 



dark lateral line in that species. marked with brown; width 1.6 mm. Body 



Stage II. Head rounded, brown black, a smooth, uniform, pale green, a little whitish, 



little mottled with pale; width .55 mm. subdorsal line obscure, whitish ; dorsal space 



Body pale brown with longitudinal dark with faint pale brown linings, lateral region 



brown lines, distinct in a broad lateral band, somewhat more distinctly so, appearing 



leaving the dorsum broadly pale and the sub- darker, and giving the dorsum a flattened 



ventral fold distinctly so. Venter indistinct- look. Spiracles and tubercles iv dark. Ven- 



Ij lined. Tubercles i and ii slightly brown ter faintly marked, like the dorsum, all the 



marked ; feet all brown. A pale subdorsal markingsllight. Feet pale. 



