On Certain Grass-Eating Insects. 



69 



long. The larvae failed to survive the winter, and, as this insect 

 is closely related to the Vagabond Crambus, the remainder of 

 its life history is probably very similar. 



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

 color before hatching. Form elliptical oval ; size .41 by .33 mm. The egg- 

 shell has twenty longitudinal ridges and numerous smaller transverse ridges. 

 PI. XII., Fig. 8. 



Larva, first stage. — Head diameter .225 mm. ; body diameter .175 mm. ; 

 length 1.2 mm. Head nearly black ; thoracic shield a dark reddish brown ; 

 body whitish translucent with many pale rufous spots on the dorsum of the 

 fifth to the twelfth segments inclusive. Scattered dark colored hairs occur 

 on the head and body. 



Late in the fall the head and thoracic shield are almost black, the pale 

 rufous spots have developed into dark brown tubercles, and the body has 

 become deep brown. 



9. The Vagabond Crambus. 



Crambus vuJgivagellns. 

 plates II., VI., XII., XIII., Fig. 9. 



This insect is a very ordinary appearing moth. The fore wings 

 are a dull yellowish color flecked with black and with black dots 

 on the outer margin at the tips of the veins. The labial palpi 

 are very long and are flecked with black. The rest of the insect 

 is of a more or less yellowish gray color. In spite of its com- 

 monplace appearance, this insect is very interesting economically. 



The adults fly about dusk during the latter part of August and 

 the first half of September. 



Trap Lantern Record. C\ vulgivagellus, 1889. 



The moths are attracted to light in large numbers, but mostly 

 males are taken. In shady places the moths fly more or less dur- 

 ing the day. This insect is very prolific ; one female laid three 



