May i9'x 



PSYCHE. 



59 



lected at Auburn, Ala., in September 

 by myself. These three specimens are 

 unifoi'm in tlie above characters. I 

 timl no gradation towards them in my 

 entire series of robiistns, numbering 

 some ninety specimens, some of vvhicli 

 are from Alabama. 



Alacrop^h .■iiynmi/jeiis n. sp. — Female. 

 Length 4 nun. Near alubameiisis tlian 

 wliicli it is stouter. It differs as follows: 



Bright straw color throughout. Hairs on 

 el\tra black, \tv\ short and \'er_\' sparse, 

 almost wanting on median portion. A 

 brown cloud at tip of clavus and more or 

 less numerous small brown marks at apex 

 of corium. Last ventral segment as in 

 (iltihiuncjisis. 



Described from three females in the 

 Herbert H. Smith collection, taken at 

 Chapada, ]5razil, in October and No- 

 vcmlier. 



LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE . — XI. 



BY HARRISON G. DVAR, WA.SIIINGTON, D. C. 



Gypsochroa Inicsitaia Guen. 



Egg- Elliptical, a little flattened above 

 and below, one end larger than the other, 

 but full and well rounded; micropylar (large) 

 end not flattened. Smooth, finely shagreened, 

 the reticulations obsolete, just the faintest 

 trace perceptible in the shell. Not shining, 

 ocher yellow. Size 6 X.5S X.5. mm. Laid 

 singly on spider's webs or other delicate 

 thread on the leaves or branches of its food 

 plant. 



Stage I. Head round, bilobed, clypeus 

 moderate, rather flat before; very pale 

 brown, a narrow dark line on posterior 

 edge of cheeks ; ocelli and mouth dark; not 

 shining; width .4 mm. Body not very 

 slender, cylindrical, smooth, normal, dull 

 greenish, sordid dark and opaque, no defi- 

 nite lines, but numerous longitudinal fine 

 paler streaks, somewhat confused. Feet 

 pale; tubercles small, brown; setae black 

 with slightly swollen tips; no subprimaries ; 

 tubercle iii superstigmatal anterior, iv post 

 stigmatal, a trifle above the whitish tracheal 

 line, V well anterior, vii with separated hairs : 

 on thorax ia, iia, iv and vi visible. 



Stage II. Head rounded, flattened before, 

 held out flat, mouth projecting, antennae dis- 

 tinct; sordid brown, speckled with darker, a 

 faint, grayish V-sbaped shade bordering the 

 clypeus; width .7 mm. Body not wery slen- 

 der; legless segments elongated. Green, the 

 ends, joints 2 to 1; and 10 to 13 shaded with 

 brown, anteriorly darkly shaded especially 

 subdorsally, posteriorly lighter, faintly longi- 

 tudinally lined, but without distinct bands. 

 Feet pale; tubercles obsolete, setae fine short 

 and pale. Shields concolorous and obscure. 



Stage III. Head round, flattened before, 

 not bilobed and free from joint 2; whitish, 

 densely mottled with pale brown, more 

 sparsely aljout the clypeus; ocelli black; 

 width 1.2 mm. Body moderate, cylindrical, 

 uniform, translucent whitish green, green 

 from the food, with irregular longitudinal 

 rows of small white specks; at the extremi- 

 ties faintly tinged with brown and the 

 specks become dark. Tracheal line visible; 

 spiracles narrowly black rimmed; tubercles 

 small, white; setae very short, pale. 



Stage IP. Head rounded, very slightly 

 bilobed, whitish green, thickly mottled with 



