26 



Inju7'ioiis and Be7iejicial Insects. 



.20 inch in length. It is fastened by one side to the leaf, and 

 differs from that of the apple Bucculatrix in not being ribbed 

 longitudinally. A minute, lieautifully brilliant green ichneumon 

 (Chalcis) fly seems to attack in considerable numbers the chrys- 

 alids of this insect, as nearly half of those reared by me turned 

 out one of these parasites. It is a species of a genus allied to 

 Eulophus, having the antennae pectinated, the terminal joints 

 throwing off five long branches. It differs, however, from Eulo- 

 phus among other characters by having a short, thick body, a 

 small, conical abdomen, and short, thick antennse. Tlie fore 

 ■wings are broad, triangular. 



The Two-lined Telep/ior us. —(Plate 1, Fig. 7, beetle ; Fig. 8, 



larva. Fig. 12, a, 

 top view of head 

 and prothoracic 

 segment ; at^ an- 

 tennse ; 771(1, man- 

 dibles ; b, under 

 side showing mp 

 the maxillary pal- 

 pi ; Ip, labial pal- 

 pi ; /, first pair of 

 feet. The beetles 

 of this and other 

 species which belong to the family of fire-flies feed on the leaves 

 of forest deciduous trees, especially the birch. The larva?, how- 

 ever, devour snails and insects, and do no injury to vegetation. 

 The larva of this species was identified by Mr. P. S. Sprague, 

 who found it near Boston, under stones in spring, where it 

 changes to a pupa, and early in May becomes a beetle, when it 

 eats the newly expanded leaves of the birch. 



The body of the larva is rather long and slender, thickest in 

 the middle, where it is about twice as wide as the head, and 

 tapers slightly towards each end of tlie body, the terminal seg- 

 ment being a little less than half as thick as the middle segment. 

 Tlie segments of the body behind the head are unusually con- 

 vex, the sutures between them being very deep. The body is 

 covered with fine, dense hairs, giving it a peculiar velvety 

 appearance. Its general color is horn brown, the head being 



