BIRCH BORERS. 485 



3. Crastis latitarnits Norton. 

 Order Hymenoptera ; family Tenthredinid^, 



The following note is from Mrs. Dimmock's article on birch insects 

 Psyche, p. 286) : 



Croesus latHarsus Norton (Proc. Entom. Soc. Phil., 1862, i, p. 199). Norton (?. c.) 



describes the male of this species, and later (Trans. Amer. Entom. Soc, 1867, v. i, p. 



84) describes the female, and adds, "Bred by Mr. Walsh from larva} feeding on 



birch." 



4. Clytus ? larva. 



Xylotrechus colonus (Fabr.)?. 



Plate XII, Fig. 3, represents the mouth-parts of a Clytus nearly allied 

 to if not identical with Xylotrechus colomis. 



5. Cossus sp. 



The following note is from Mrs. Anna K. Dim mock (Psyche, iv. p. 



274): 



Lintner (Entom. Contrib., iv, 1878, p. 244-245) states that the larvie of a Cossus, 

 the pupal cases of which prove to be those of some as yet undescribed species, bore 

 in the wood of Betula populifolia. 



6. Chrysohothris Q-signata Say. 



The beetle and pupa of this Buprestid borer were 

 found in the yellow birch June 1, at Providence. 



The notes on the three following species are copied 

 from Mrs. Dimmock's Insects of the Birch : * 



7. Tylonotus bimaculatua Hald. 



Tylonotus bimaculatus Hald. (Trans. Amer. Philos. Soc, 1847, 

 V. 10, p. 38) is said by Packard (Bull. 7, U. S. Entom. Comm., pj^ i';i,^chrysoboth- 

 1881, p. 129) on authority of G. Hunt, to be found "under bark ris G-ngiiata. Smith 

 of white or paper birch, northern New York." 



* The following species do no injury to the tree, only living in or under the bark, 

 or in the wood of dead and decaying trees : 



Nyctohatea pensylvanica De Geer (M6m., 1775, v. 5, p. 52; pi. 13, fig. 10). Schaupp 

 (Bull. Brooklyn Entom. Soc, July 1881, v. 4, p. 23) writes of this species, "Pupie in 

 beech July 15|; in hemlock July 18; in birch July 21." 



Campylus denticornis Kirby (Fauna Boramer., 1837, pt. 4, p. 145). G. Dimmock 

 has reared this species from larviB found in partly decayed bark of Betula papyraceaj 

 on Mount Washington, New Hampshire. The imagos emerge from the pupae about 

 July 1, and are abundant during July in the White Mountains. 



Trogosita corticalis Melsh. (Proc. Acad. Nat. Sci. Phil., Oct. 1884, v. 2, p. 109), 

 Schaupp (Bull Brooklyn Entom. Soc, July 1881, v. 4, p. 23) writes of this species, 

 "Larvie in birch July 8, in beech August 14, in sugar maple July 19." 



Ceruchus piceus Weber (Observ. Entom., 1801, p. 84). The pupae are mentioned by 

 Fuchs (Bull. Brooklyn Entom. Soc, Dec. 1882, v. 5, p. 59) as being very common in 

 an old beech stump, and are briefly described. The larvae are mentioned by G. 

 Dimmock (Direct. Collect. Coleopt., 1872, p. 20) as living "in decayed chestnut and 

 willow." The larvae are very abundant in decayed and fallen wood of Betula alba 

 during autumn. Quite a large number of larvte taken in Milton, Massachusetts, No- 

 vember 10, 1883, fed through the winter and produced a single beetle. From these 



