BEETLES FEEDING ON THE OAK. 221 



417. Hypothenemus dissimilis Zimm. Boring, with the succeediug spe- 



cies, which may be the other sex, in oak twigs. (J. B. Smith, 

 Ent., Amer., March, 1890, 54.) 



418. Hypothenemus erectus Lee. 



419. Dicerca asperata Lap. and Gory. (Chitteuden,Eut. Amer., v, 218.) 



420. Prionus {1) sp. Received January 20, 1881, from H. H. Eusby, 



a coleopterous larva found boring in a stick of oak at Silver 

 City, N. Mex. The larva is evidently that of a species of Prionus. 

 (Riley's unpublished notes.) 



421. Prionus californicus (?). Received January 14, 1881, from Mrs. A- 



E. Bush, San Jose, Cal., the larva of some Longicorn found in 

 " white oak," which in all probability is that of the above in- 

 sect. Two others were received from the same person and locality 

 in April. Not bred. (Riley's unpublished notes.) 



422. Pityophthorns minutissimus Zimm. February 7, 1882. This insect 



was found at this date in large numbers, both in the imago and 

 larva state, under the bark of a dry piece of oak wood. Their 

 mines, as a rule, run parallel with the wood ; rarely transversely. 

 (Riley's unpublished notes.) 



423. Lachnosterna quercina Knoch. Beetle devours the leaves of vari- 



ous trees at night. This beetle entirely denuded the pin and post 

 oaks on W. C. Flagg's place at Alton, this year. (Riley's unpub- 

 lished notes.) 



424. Fidia sp. June 25, found many Fidia beetles on oak and hickory 



eating large holes in their leaves. (Ltiley's unpublished notes.) 



425. Cryptocephalus notata, Fabr. Feediug on oak, sassafras and elm. 



(Riley's unpublished notes.) 



426. Coscinoptera dominicana Fabr. June 11, 1873, Riley records the 



beetles as found in copulation on young oak. The larva feeds, 

 however, on dry leaves, and he has published a full account of 

 the species. (6th Rep. Ins., Mo., pp. 127-132.) 



427. Gentronopus calcaratus Fabr. " Inhabits black oak stumps. It 



remains in pupa two weeks." (Horn.) 



428. Gentronopus anthracinus Knoch. May be taken in company with 



the preceding species. (Horn.) 



429. Acanthoderes ^gihhus Say. Bores in dead twigs of oak. (Sehwarz.) 



430. Tragidion fulvipenne Say. Bores in oak. (Riley.) The mode of 



egg-laying is described by Popenoe in Insect Life, ii, 192. 



431. Arhopalus fulminans Fabr. Red oak. (Fitch & Hadge, also 



Riley.*) See chestnut insects. 



432. Ataxia crypta Say. Found by myself under the bark of the oak 



at Chattanooga, Tenn. (Identified by Dr. Horn.) 



'Numerous larvte of this insect were fouud January 10, 1882, Washington, D. C, 

 boring in dry red-oak wood. All the younger larvj© were working under the bark, 

 the fulJy grown specimens, however, gnawed a channel into the solid wood for the 

 purpose of pupation. By the 7th of February pupje were found ; the beetles com- 

 menced issuing the 13th of March. (Unpublislied notes.) 



