PINE BORERS 677 



thorax are three polished, blaclf elevated lines ; on each wing-cover are two small 

 square impressed spots, a long elevated smooth black line near the outer, and another 

 near the inner margin, with several short lines of the same kind between them; 

 under side of the body sparingly covered with short, whitish down. Length 0.8 to 

 1.10 inch.* (Harris.) 



3. Chalcophora, probably C. virginiensia. 

 (Larva, PI. xvi, tig. 1.) 



I bave little doubt but that the following description is that of the 

 larva of the foregoing species, and that at any rate it is a true Chalcop- 

 hora. 



Compared with Loew's figure of the larva of Chalcophora (Eut. Zeit- 

 ung, Stettin, 2ter Jahrgang, 1841, Tab. I, figs. 1-8) our species differs 

 mainly in the larger chitinous prothoracic disk, though the V-shaped 

 mark is the same. In the shape of the body, in the form of the meso- 

 thoracic and metathoracic segments, and the end of the abdomen, our 

 larva appears to be a Chalcophora. The first abdominal ring is longer 

 and narrower than in Loew's figure. The labrum is peculiar in this 

 genus, on account of the lateral lobes ; in this respect it resembles the 

 figure of Loew ; while the antennae, maxillae, and labium are nearly as 

 he figures them. Under these circumstances we think there is no rea- 

 sonable doubt but that this larva is a Chalcophora, and probably, from 

 its large size, C. virginica, which, according to Harris, bores in the pine. 



The two specimens described were taken from under the bark of the 

 pitch pine. May 26, Providence, R. I. 



Larva. — Compared with Dicerca the head is much larger and better developed, 

 while the prothorax is of the same size, and the abdomen is fully as thick, but rather 

 longer. Prothorax and the V-shaped mark one half narrower than in Chrysobothris 

 femorata, and with no markings around the apex, as in Dicerca. The prothoracic 

 disk has very large, coarse, transverse, raised linear chitinous points, which are more 

 or less confluent, forming irregular transverse wavy ridges. The disk on the under 

 side has similar markings, and a single narrow deeply impressed median line, which 

 extends from the front to the hinder edge. 



No roughened area on the succeeding segments, but on the mesothoracic are two 

 remote converging curved lines, and on the metathoracic segment are similar lines, 

 which extend nearer the front edge ; the curved lines inclose a subtrapezoidal space. 



* Chalcophora virginiensis is stated by Fitch to be always an inch or more in length, 

 but I have measured a great many specimens and find that few exceed an inch in 

 length, the rest varying from seven-eighths of an inch up to the maximum of slightly 

 over an inch. This species is duller in color than the preceding species, and the 

 raised lines on the elytra are less sbarply defined. It can be further distinguished 

 by two impressed spots on each elytron interrupting the second line. This species 

 has been found by me almost invariably crawling, or at rest, upon the sunny side of 

 the trunk or limbs, instead of among tbe leaf clusters. Its color tones so well with 

 the bark of young trees that it is not easily seen, until this habit of frequenting the 

 sunny side of the tree is known, when it can be more readily found. We have 

 already noticed that lib erta closely resembles the young cones aud thus have in these 

 beetles two very good instances of protective coloring and habits. C. virginieiisis 

 is not so abundant as C. liberta, but is by no means rare and is not unfrequently 

 found about the city on the sidewalks or crawling on houses or fences. — W. Hague 

 Harrington in Trans. Ottawa E'ield Naturalist's Club, No. 2. 



