August, 1902] 



PSYCHE. 



383 



green, slightly infuscated on anterior border 

 of the segments; ranged appendages black ; 

 tubercles of second thoracic and eighth ab- 

 dominal segments fuscous; a piceous latero- 

 dorsal blister on first thoracic segment. 

 Length 3 mm. Mature cuteipillar: Head 

 yellow with piceous arched bands. Body 

 transversely banded with more or less inter- 

 locking bands of white, black, and lemon yel- 

 low ; spiracles piceous; filaments black. 

 Length 45 mm. Feeds on various species of 

 Asclepias but especially A. cornn/i and has 

 been found also on Acerates and even on 

 Apoc^'num. C/irysnlis : Delicate pea green, 

 tubercles gilt, but those of third abdominal 

 segment set in a tricolored band, shining 

 piceous in front, gilt behind and nacreous 

 between, the last two dividing the tubercles. 

 Length 27 mm. — The entire United Stales 

 and southern Canada from Atlantic to Pa- 

 cilrc, but believed to winter in the more south- 

 ern portions and annually to migrate north, 

 breeding beyond as well as within its natural 

 region, returning south in the autumn in 

 swarms. At least double brooded in tlie 



south. Wintering as a butterfly, on the 

 wing all summer. 



Tasitia Moore. 



Butterfly: Palpi moderately slender,- 

 tiiinly clothed with hairs and scales ; club 

 of antennae less than twice as stout as 

 stem. Discoidal cell relatively short, in 

 the fore wings hardly more than one half, 

 in the hind wings less than three fifths 

 the lengtii of the wing ; fore wings less 

 produced, being less than twice as long as 

 broad, the cell no longer above than 

 below ; androconial pouch of hind wings 

 larger than in Anosia. Egg: Unknown. 

 CatcrpiHar at birth : Unknown. Mature 

 caterpillar : With a pair of long fleshy fila- 

 ments on the second thoracic, second and 

 eighth abdominal segments, in all cases 

 much longer tiian the segments. 



LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE.— XXXIV. 



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



Deilinia quattraria Grote. 



Egg. Elliptical, the large end strongly, a 

 little obliquely truncate, the other flattened 

 depressed ; truncate end convex in the cen- 

 ter. Reticulations linear, narrow, slightly 

 raised, arranged in straight rows the length 

 of the egg or very slightly spiralled, alter- 

 nated, so that the parallel lines are waved ; 

 just at the edge of the truncation the reticu- 

 lations become small, sharp ridges. Trun- 

 cate end smooth, obscurely reticulate. Light 

 blue-green ; size .g x .55 x .4 mm. 



Stage I. Head rounded, reddish luteous, 

 the pointed mouth brown ; slightly bilobcd, 



free, nearly erect. Body moderate, normal, 

 uniform, smooth, whitish; a rather broad 

 purple brown dorsal stripe, roundedlv dif- 

 fuse at the ends and a similar subventral one 

 on joints 1 to 13, narrowly dilifuse at the 

 end.s, scgmentarily submaculate in darker. 

 P'eet whitish, normal ; tubercles and setae 

 obsolete. 



Stage II. Head rouiuieil, hilobed, witli 

 small shield-shaped clypeus, free, erect; 

 whitish, dotted mottled in purple gray, but 

 leaving a pale, erect streak on each lobe. 

 Body slender, rapidly vibrant before looping ; 

 whitish, op.ique ; dorsal stripe broad, purple 



