530 REPORT UNITED STATES GEOLOGICAL SURVEY. 



twenty and the last twenty-eight years after the trunk was cut down. 

 These facts are stated more fully in the History of the County of Berk- 

 shire, published at Pittsfleld in 1829, p. 39. This, I believe, is the longest 

 period of an insect remaining alive in timber of which we have any 

 record, and it is desirable to ascertain, if possible, what insect this was. 

 John J. Putnam, esq., of White Creek, Jf. Y., was a young man residing 

 at his father's when these remarkable incidents occurred. On showing 

 to him specimens of all the larger long-horned beetles of this vicinity, 

 he points to CeraspJiorus halteatus as being the same insect, according to 

 the best of his recollection, but is not certain but it might have been the 

 Callidimn agresteP 



"This testimony, in connection with what President Fitch, of Williams 

 College, says of the insect in the notice above referred to — ' Its color 

 dark glistening brown, with tints of yellow' — releases us from all doubts 

 upon this subject, as the agreste is of a uniform brown, whilst the bal- 

 teattis commonly presents traces, more or less distinct, of an oblique 

 yellowish spot or band near the middle of the wing-covers." 



Larva : Body soft, white, long, nearly cylindrical, being but slightly 

 flattened, entirely footless, all the abdominal segments of the same 

 width, except the minute small one. From the first abdominal (or fourth 

 from the head), the body increases in width, being widest on the pro- 

 thoracic segment (or the one next to the head). This segment is trans- 

 versely oblong, being as wide in iront as behind; it is a little more than 

 twice as wide as long. The head is large and square, not narrowing in 

 front, but tis wide anteriorly as posteriorly. When the head is forcibly 

 pulled out it is found to be as long as broad ; anterior one-fourth of 

 head deep mahogany red, becoming blackish on the edge. Clypeus 

 very short and broad, about four times as broad as long. Labrum rather 

 wide, not much contracted at base, rounded in front, with very stout 

 bristles on the margin. Mandibles gouge-like, the end oblique, hollowed 

 out, with the outer edge produced into a point. Antennse very minute, 

 three jointed, the second and third joints about as long as the basal. 

 The maxillae form a basal joint throwing off a three-jointed palpus, and 

 an inner lobe armed with stiff* bristles reaching to the end of the second 

 joint of the palpus. The two-jointed labial palpi reach to as far as the 

 middle of the brush-like lobe of the maxillsB; the second joint is about 

 as long, but half as wide as the basal. The middle of each segment^ 

 especially the third to the seventh above and below, with a transverse 

 callous spot. The upper side of the first abdominal segment has a very 

 narrow oblong square area impressed upon it. The callous spot is best 

 marked on the fifth segment, consisting of an area about one-third as 

 long as broad, with a square shallow sinus posteriorly, and with the sides 

 projected inwards; it consists of two series of callous spots, the outer 

 forming the limits of the area as above described, and the inner series 

 forming a simple transverse narrow lanceolate oval spot. The callous 

 spot on the under side has a sinus in front, but slightly rounded be- 

 hind. The one on the seventh segment (below) is but little more than 

 one- half as wide, with a broad sinus on the hind edge, and with the 

 sides directed obliquely inwards. Terminal segment very small, half 

 as wide, and one-fourth as long as penultimate segment. JS^ine spiracles, 

 first on front edge of second thoracic (mesothoracic) segment. 



Length when lully grown, 1^ inches. This larva may be known from 

 that of Rhagivm lineatmn, by its much longer, more cylindrical body, 

 and differs at once, by the long square head, that of Bhagium rounding 

 in front, by the wider clypeus, and proportionately wider and shorter 

 labrum. The palpi and antennce do not differ much. The callous spots i 



