45 



Fig. 15. 



black above and bright coppery below ; some specimens 

 (males) having the front of the head and antennae bright 

 green, and the legs tinged with green and crimson. Each 

 elytron has three raised lines running lengthways, between 

 which are irregular crossHnes and punctures, and has two 

 impressed spots. The larva, Figure 15 a, mines shallow, 

 irregular, burrows under the bark in the same manner as 

 when boring in the apple-tree. 



No. 6. Anthaxia viridifroiis Gory. This handsome little 

 beetle was bred from hickory twigs by Dr. LeConte, and has 

 very frequently been found by me upon the trees in summer. 

 It is about two-tenths of an inch in length and one-tenth in 

 width. The colour is brown with a bronze lustre, and the 

 males have the front of the head of a vivid green, from which 

 the name of the species is derived. 

 No. 7. Anthaxia viridicornis, (Say) I have also found abundant on hickory. It is a 

 slightly larger species than the preceding, but closely resembles it, except that the 

 elytra are of a bluish-black colour. Found also very commonly on elm. 



No. 8. Agrilus egenus Grory was also bred by Dr. LeConte from hickory twigs, and 

 is abundant on that tree. It is a little smaller than the red-necked agrilus which bores 

 in the raspberry stems, and is of a uniform dull bronze colour. 



No. 9. Agrilus otiosus (Say), is very frequently found with the foregoing, and, being 

 almost of the same size and colour, is very difficult to distinguish from it. 



We next have a small beetle belonging to the Ptinidas, the members of which vary 

 greatly in shape, but are usually small. The larvae of many species are very destructive, 

 boring deeply into the wood of the trees infested. 



No. 10. Lyctus striatus (Mels.) is a slender reddish beetle about one-fifth of an inch 

 long. The head is prominent, not covered, as in many species, by the thorax, and the 

 antennae end in a round two-jointed club. The thorax is longer than wide, and the 

 elytra are striated. It is one of the species bred by Dr. LeConte, from hickory twigs. 



The extensive family of the Cerambycidae contains, however, the great majority of 

 our destructive borers, and to it belong no fewer than twenty- seven of the species men- 

 tioned in this paper. Its 

 members are generally 

 beetles of cylindrical form ; 

 lively and active in their 

 movements, and having long 

 slender antennae, whence 

 they are usually called 

 Longicorns. The larvae are 

 elongated, fleshy grubs of a 

 whitish or yellowish colour, 

 usually with the segments 

 distinct, and footless. — See 

 Fig. 16, a, which represents 

 the larva of Saperda Candida 

 Fab., a well-known species infesting the apple-tree ; b and c represent the pupa and per- 

 fect stages of the same insect. 



No. 11. Chion ductus (Drury), is a beetle about an inch in length and one-third of 

 an inch in width. The thorax is rounded, with a projecting spine on each side. The 

 general colour is brownish, but a greyish look is given to it by a covering of short hairs, 

 and it has an oblique yellowish band across each wing-cover before the middle. The 

 elytra are bispinose at the tip. The antennae are very long and slender ; those of the 

 male being twice as long as the body. The yellowish, elongated larva burrows when 

 young beneath the bark, and when larger sinks deeper and forms long galleries '* in the 

 direction of the fibres of the wood." (Harris.) 



(Fig. 16.) 



