August, igoi] 



PSYCHE. 



239 



with various large ants, especially with 

 Formica exsectoide^, sitbscrkea^ etc., but 

 very often with termites also, particular- 

 ly in rotten trunks where they insert 

 themselves between the passages of their 

 victims. 



I cannot finish this short notice of the 

 habits of the North American ants that 

 I have observed thus far, without thank- 



ing most sincerely my good friends and 

 colleagues Dr. Ad. Meyer of Worcester, 

 Dr. Murphy of Morganton, and Dr. 

 Faisons of Faisons, to whose aid, hos- 

 pitality and inexhaustible kindness I 

 owe all that I have discovered. Now 

 I go to visit the able American myrme- 

 cologist Mr. Pergande at Washington 

 and thence return to Europe. 



LIFE HISTORIES OF NORTH AMERICAN GROMETRIDAE. — XXIV. 



BY HARRISON G. DVAR, WASHINGTON, P. C. 



Eoi$ induclata Guen. The moth from 

 which these eggs were obtained was in very 

 poor condition and the larvae died before 

 pupation, but I believe that the determination 

 is correct and that there are no more larval 

 stages. There is no previous description of 

 this larva. 



Egg. Long and nearly cylindrical, less in 

 cue diameter but not with anv flattened sur- 

 face; one end first a little bulging, then taper- 

 ing to a round blunt point, wedge shaped 

 from side view, the other end (micropylar) 

 roundedly truncate. About eighteen longi- 

 tudinal ribs, fluted at the joinings of the faiVit 

 regular cross-striae which form square cells. 

 Ribs diminishing by a few before the ends; 

 micropylar end coarsely irregularly reticu- 

 late. Pearly white, looking beaded from the 

 fluted ribs. Length .g, width .4 X .3 mm. 

 The next day turned pink, shading to red at 

 the truncate end. 



Stage I. Head rounded, free, slightly 

 bilobed, luteous, faintly mottled with brown ; 

 width .3 mm. Body slender, whitish, a rath- 

 er broad, even, brown-gray dorsal band, sep- 

 arated on joints 2 to 4 into four diffuse lines, 

 but soon merging into a single, broad dorsal 

 band to joint 13 ; a broad subventral band, 



the pair separate. Tubercles pale, nearly 

 obsolete; setae short, dusky with small en- 

 larged tips. Feet pale; segments finely, 

 about 20-annulate. Anal flap pale. Seg- 

 ments scarcely enlarged centrally, uniform, 

 smooth. After feeding turned greenish by 

 transparency. 



Stage II. Head round, scarcely bilobed, 

 free; whitish, a white stripe on the face of 

 each lobe, containing an isolated brown dot 

 opposite middle of clypeus; many brown dots 

 filling the median suture and apex of clypeus, 

 also on the outer side of the white band ; 

 labruni pale; ocelli and tips of antennae 

 brown-black; width .4 mm. Body moderate- 

 ly slender, smooth, normal, segments, numer- 

 ously (about 20) annulate, but not distinctly; 

 setae short, black, rather coarse. Dorsum 

 broadly dark brown, cut near its edge by a 

 linear, slightly flexuous, pale yellowish sub- 

 dorsal line, most distinctly at the ends and in 

 incisures; sides pale green; a broad subven- 

 tral band, colored like the dorsal one and 

 slightly intensified at tubercle vii on each 

 segment. \'enter pale green rather narrowly. 

 Cervical shield more reddish than the rest of 

 the dorsum. Feet all pale. 



Stagt III. Head rounded, not bilobed, 



