154 FIRST ANNUAL REPORT OF 



paler in colon of smaller size and with less contrast between the up- 

 per and lower wings. We have here an excellent illustration of what 

 Mr. Walsh has called Phytophagic variation,! for the Snowberry 

 and Hickory feeding worms were evidently of but one species, and 

 the difference in the moths was caused in my estimation by the differ- 

 ence in food. Mr. Grote, it is true, describes the small form as the 

 male and the large form as the female, but the difference is not sex- 

 ual, as the two sexes occur alike in both forms. 



Torthix Rilevana. Gro te— Larva— Length, Hickory feeding, 0.60-0.80; Snowberry feeding, 

 0.40-0.50. Largest on segment 2, tapering thence gradually to anus. Ground color dull yellow. 

 Covered with large, distinct, black, sealing-wax-like, slightly elevated spots, each giving rise to 

 5ne bristles. These spots are thus arranged on each segment : 2 each side of dorsum the pos- 

 terior ones widest apart ; 1 at sides in the middle of the segment, containing the stigmata in its lower 

 hindmargin ; 1 smaller and narrower just below this, on a somewhat elevated longitudinal ridge, and 

 1 round one below this ridge on the posterior part of the segment. Segments 2 and 3 have but 

 one pot each side of dorsum. Two distinct wrinkles on all the segments, more on 2 and 3. Head, 

 cervical shield and caudal plate black. Venter dirty yellow with black marks ; legs ditto. 



Chrysalis — Honey-yellow, robust in the middle, and with two transverse rows of minute teeth 

 across the back of each segment. 



Perfect Insect — From Hickory — Average expanse 1 inch, length of body, 0.35. Deep ochreous. 

 Fore wings evenly washed with purplish, leaving the fringes and costal edge dark ochreous. The 

 marking? take the shape of dark velvety brown rounded maculations, generally of small size and 

 faintly shaded with ochreous on the edges. Three of these subterminally at the base of the wing, 

 subeqiial, situated interspaceally between the nervures. At a little within the middle of the costa 

 are two fused maculations, the most prominent. Before and beyond these, some faint costal marks. 

 At the extremity of the discal cell, above median nervure, is the first of a series of maculations, 

 normally four in number but not constant, usually uneven in size. A subterminal series of spots 

 is inaugurated on costa by a large, compound shaded maculation. Below this, over the median 

 nervules, sweeps an outwardly rounded series of small approximate dots. Two dots on costa, within 

 and at the apex, and a faint terminal series of minute streaks is shortly discontinued. Hind wings 

 of a lustrous bright deep ochreous ; pale along the costal margin and darker shaded along internal 

 margin. Beneath, as are the hind wings above ; both wings immaculate, fore wings the darker. 

 Body and appendages concolorous, bright deep" ochreous. Antenme simple. Numerous bred 

 specimens. 



From Snowberry — var. symphoricarpi — Much paler, the fore wings not being as dark as the 

 bind wings of the above. The upper surface of fore wings not washed with purplish but merely 

 of a darker ochreous than the hind wing. The maculations entirely similar but ferruginous, paler 

 and the slighter costal marks obsolete. Legs at base and under thoracic surface almost whitish 

 Average expanse, 0.62; length of body, 0.30. Described from numerous specimens. Under sur. 

 faces exactly alike in both varieties. 



THE SEED-CORN MAGGOT, Anthomyia zeas—~&. Sp.— PI. 2, Fig. 24. 



(Diptera Muscidss.) 

 DESTROYING THE SEED AETER IT IS PLANTED. 



About the 20th of last June I received the following letter from 

 A. S. Fuller, of Ridgewood, New Jersey: 



"Dear Sir: I send you, by mail, a small box containing kernels 

 of sprouted corn, upon which you will find small white worms. Some 

 of the corn fields in this vicinity are being ruined by this pest. These 

 worms attack the corn before it comes up. What are they ?" 



| See his paper in Proc. Phil. Ent. Soc, Vol. V, p. 194-216. 



