THE CANADIAN ENTOMOT.OGIST 203 



5. It nia\' be added thai \n suniniarizinj; the genera and species to be 

 credited Id Wood, Mr. Gun thorp does not take into consideration those now 

 suppressed as synonyms. Similarly it should have been indicated that, the list 

 of species from the llnited States simply records them as given by Wood, no 

 indication being given of their present generic position or of those relegated to 

 synonymy. Thus, the generic names Cermatia, Opisthemega, and Strigamia 

 are no longer in use, having been antedated by other names; and the species 

 listed under Strigamia, Julus, Polydesmus, etc., are now known to represent 

 a \ariet>' of different genera and families. 



0. It is stated that Dr. Wood wrote several papers in the Insecta. This 

 seems to be erroneous, as there is no record of his ever having published any- 

 thing on insects proper. R. V. Chamberlin. 



WOOD-BORING BEETLES OF BLACK LOCUST. 



BY O. W. ROSEWALL, 

 Louisiana State University, Baton Rouge, La. 



From time to time it has been noticed that wood-boring insects were plenti- 

 ful in the dead or partly dead, young Black Locust trees {Rohinia pseudacacia) 

 in the University Arboretum. During the past year some of the infested wood 

 was placed in glass containers in the University Insectary, and the following 

 beetles were reared : 



Order Coleoptera — 



Family Bostrichidae — 



Sinoxylon basilare, Say. 

 Family Buprestidse — 



A grilus e genus Gory. - >, 



Family Cerambycidae — 



Ecyrus dasycerus Say. 



Liopus alpha Say. 



Lio pus fascicular is Harr. 



Liopus variegatiis Hald. 



Neoclytus eryihrocephalus Fab. 



Phyton pallidum Say. 



The above-named beetles emerged from about 15 feet of the wood, of 

 which none was over ^^ of an inch in diameter and most of it less than 1/2 inch 

 in diameter. Practically all the limbs had been removed from these small 

 trees, so the larvae had attacked the main part of the trees. 



The beetles emerged in numbers and dates as follows: 



Of S. basilare Say., 4 emerged respectively on the following dates, 

 March 23, April 6, May 1 and July 25; of .4. egenus Gory., 3 emerged respectively 

 on April 5, May 1 and July 1 ; of E. dasycerus Say., 10 emerged between the 

 dates April 21 and June 15; of L. alpha Say., 1 emerged on May 1 ; of L. fasci- 

 ciilaris Harr., 31 emerged between the dates April 12 and May 2; of L. variegatus 

 Hald., 1 emerged on April 2; of iV. eryihrocephalus Fab., 2 emerged respectively 

 on April 1 and May 13; of P. pallidum Say., 13 emerged between the dates of 

 April 16 and May 21. 



September, 1920 



