Report of the State Entomologist. 233 



This species lias not yet, to my knowledge, shown itself as a museum 

 pest, feeding upon objects of natural history, bu.t it may become so 

 enrolled at any day, in the comjDany of two of its congeners — Ptinus 

 fur Linn., as recorded by Dr. Hagen,* and Ptinus quadrimaculatus 

 Melsh., from my own experience. Several examples of the latter were 

 discovered, dead, in the month of February, in a case of dragon-flies 

 which had been received the preceding summer from South Britain, 

 Conn. Two examples of the same had previously occurred in another 

 case of insects, in which they had evidently undergone their trans- 

 formations and committed some damage. 



Xylotrechus colonus (Fabr.). 

 (Ord. Coleoptera: Fam. Ceeambycid^.) 



Fabeicius : Syst. Ent., 1775, p. 91 ; Syst. EL, 1801, p. 345 (Glytus). 



Olivier: Ent., iv, 1795, genus 70, p. 31, t. 6, flg. 67 (as Gallidium). 



LeConte: in Journ. Acad. Nat. Sci. Phil., ser. 2, ii, 1850, pp. 28, 104 

 (as C. agrestis). 



Melsheimer: Cat. Coleop. U. S., 1853, p. 105 (as Glytus campestris). 



Peovancher: Pet. Faun. Ent. Can. — Coleop., 1877, p. 599 (description). 



Packard : Bull. 7, U. S. Ent. Comm.— For.-Sh. Trees, 1881, p. 27 (as Glytus, 

 pupa descr.), p. 114 (mention) ; 3d Eept. U. S. Ent. Oomm., 

 1883, p. 258 (description of larva), pi. xii, figs. 2, 2a, 3. 



Eilet : in Amer. Ent., iii, 1883, p. 239 (bred from oak). 



Henshaw: List Coleop. N. Amer., 1885, p. 99, No. 6179. 



Leng : in Ent. Amer., ii, 1887, p. 200 (European synonymy and references). 



The Beetle Described. 



The following description of the beetle is that given by I'abbe Pro- 

 vancher, loc. cit. It is stated to be a common species 

 in Canada: 



Brown, more or less deep. Front with two approach- 

 ing longitudinal carinas, a little more separated between 

 the antennai. Antennse reddish, lighter at the extrem- 

 ities. Prothorax with numerous frans verse strise, sub- 

 cylindrical, with a spot at each angle not very distinct. 

 Wing-covers with two broad transverse bands, the first 

 yellowish-white near the base, and the second, reddish- 

 white at the extremity; this last with a black spot in 

 the middle, and the first often with a point mounting 

 to the soutellum, near the suture, and inclosing j,^^ 33— Xylo- 

 another detached spot near the shoulder. Feet red- tb^ohus colo- 

 dish with white hairs; femora (thighs) strongly nus, enlarged, 

 clubbed. Length, 0.50 inch. (After Emmons.) 



* Proceedings of the Boston Society of Natural History, xx, 1878, p. 59. 



