Twelfth Eeport of the State Entomologist 237 



In 187 1, when the potato beetle had for the first time invaded the 

 Dominion of Canada, and had not yet entered New York, Prof Riley 

 reported that this beetle was proving to be an efficient enemy of the new 

 pest in several of the western States; and that although it had pre- 

 viously been rare in the State of Missouri it had suddenly become 

 abundant and was actively engaged in destroying both the eggs and the 

 larvae of the potato beetle. 



This beetle has a distribution throughout the United States which is 

 almost co-extensive with that of the insect upon which it specially preys. 

 Unfortunately, although so abundant oftimes, and aided by nearly two 

 score of other species, it is not able to greatly reduce the number of the 

 greedy and insatiable Doryphora. 



Plagionotus speciosus (Say). 



The Sugar Maple Borer. 



(Ord. CoLEOPTERA : Fam. Cerambvctd/E.) 



Say : Long's 2nd Expedit , 1824, p. 292 (original description, as Clyiits) ; 

 the same reprinted in Amer. Entomology, iii, 1828, p. 118, PI. 

 53, fig. I ; Compl. Writ., Lee. edit., 1883, I, pp. 118, 193. 



Fitch : in Amer. Quart. Journ. Agricul.-Sci., t, 1845, p. 253, PI. 3, fig. 3 

 (brief account, as Clytus). 



Harris: Ins. Inj. Veg., J862, pp. 101-102 (brief account, as Clyius). 



Packard: Guide Study Ins., 1869, pp. 496-497 (mention, as' C7)7//j-) ; 

 Bull. 7 U. S. Entomolog. Comm., 1881, pp. J03-105, fig. 45 

 (general account, as Glycobius) ; in Amer. Nat., xviii, 1884, pp. 

 1151-1152 (oviposition, as Glycobius); 5th Rept. U. S. En- 

 tomolog. Comm., 1890, pp. 374-379, figs. 137-140) general 

 account, as Glycobius). 



Walsh-Riley : in Amer. Entomol., i, 1869, p. 146 (description, as 

 Arhopalus). 



CowDRY : in Canad. Entomol., ii, 1870, p. 38 (as Clyius, rare at Strat- 

 ford, Out.). 



Clementi : in Canad. Entomol, iv, 1872, p. 37 (as Clytus, at Peteiboro, 

 Ont.). 



Reed : in Rept. Entomolog. Soc. Ont. for 1872, 1873, pp. 35-36, fig. 26 

 (description and life-history, as Clytus). 



LeBaron : 4th Rept. Ins. 111., 1874, p. 154 (reference, as Clytus). 



Bethune : in Canad. Entomol, ix, 1877, p. 222, fig. 2 on Plate (brief 

 account, as CTj'/z/i-) ; the same in Ann. Rept. Entomolog. Soc. 

 Ort., 1877, p. 23, fig. 2 on Plate, 



Thomas: 6lh Rept. Ins. Ill, 1877, pp. 38,44, 83, 151, iii, iv (in northern 

 Illinois, as Clytus). 



Saunders : in Rept. Entomolog, Soc. Ont. for 1878, 1879, pp. 32-33 

 fig, 13 (brief account, as Clytus). 



