62 Bulletin 64. 



The habits of the larvae are thus described by M. H. Beck- 

 with :* ' ' This species does not penetrate the plant (corn) and 

 remain feeding upon the tender inner parts, but works upon the 

 outer portion just beneath the surface of the soil. Some plants 

 were nearly girdled, and the worms were frequently found im- 

 bedded in cavities where they had fed upon the plants. In some 

 instances as many as thirty worms were found in a single hill of 

 com. In many hills the plants had been entirely destroyed ; in 

 others they were small and had a 5'ellow, sicklj' appearance. 

 The greatest injury appeared to have been caused in that portion 

 of the field adjoining a small strip of timothy sod that remained 

 without plowing." In all probability^ this injury was caused 

 by the moths flying into the field from the adjoining grass and 

 dropping their eggs in the field. The eggs hatched and the larvae 

 had no other food, hence the injur}^ to the corn. 



Egg. — Creamy white when first laid, gradually turning to an orange rufous 

 color before hatching. Form elliptical-oval with the ends slightly truncate ; 

 size .39 by .3 mm. The egg-shell has eighteen longitudinal ribs and numer- 

 ous smaller transverse ridges. PI. XII., Fig. 2. 



Lay'va, first stage. — Head diameter .15 mm.; body diameter .125 mm.; 

 length .875 mm. Color a smutty translucent white with irregular reddish 

 spots on the middle line of the back ; head a pale amber color. Scattered 

 light colored hairs occur on the head and body. Five pairs of prolegs, occur 

 on the seventh to tenth inclusive, and thirteenth segments. f 



3. The Dried Crambus. 



Crambus interminellus . 



plates I., v., XII., XIII., Fig. 3. 



This insect is a rather large ashy graj'- moth with two irregular, 

 oblique black markings upon the fore wing. This species seems 

 to prefer low wet land. The moths fly mostly at or just after 

 dark ; they are attracted to light in large numbers but, as in most 

 species, the majoritj^ taken are males. | 



* Bulletin No. XIV, Delaware Agricultural Experiment Station. 



t This is true of all the species studied. 



' J H. Osborn records a predominance of females loaded with eggs. Insect 

 Life, Vol. VI, No. 2, p. 72. 



