34 



P. ROBiNiAE Peck. (PI. VI, figs. 9 and lo.) 



Cossus robiniae Peck, Mass. Agri. Rep. & Jour., V, p. 67, PI. (1818) ; Harris, 

 Cat. Ins. Mass., p. 72 (1825); Walker, Cat. Lep., Brit. Mus., p. 1514 

 (1856) ; Fitch, 5th Rep. Nox. Ins., N. Y., p. 4 (1859) ; Morris, Syn. Lep. 

 N. Am., p. 124 (1864). 



Xylcutes robiniae Harris, Ins. Inj. to Veg., 2nd Ed., 316 (1852) ; id, 3rd Ed., p. 

 413, fig. 205 (1862); Packard, Proc. Ent. Soc, Phil., Ill, p. 388 (1864). 



Xystus robiniae Grote, Am. Phil. Soc, p. 263 (1874) ; Packard, Bull. No. 7, U. S. 

 Ent. Comm., p. 7 (1881). 



Prionoxystus robiniae Grote, New Check List, 63 (1882); Bailey, Bull. Dept. 

 Agr. Ent. 3, p. 54 (1883) ; Kirby, Cat. Lep. Het., I, p. 867 {1892) ; Neu- 

 moegen & Dyar, Jour. N. Y. Ent. Soc, II, p. 163 (1894); Holland, 

 Moth Book, p. 378, PI. XLI, 10 and 11 (1903) ; WoUey-Dod, Can. Ent., 

 XXXVIII, p. 266 (1906). 



Cossus crepera Harris, Cat. Ins. Mass., p. 72 (1835); Lintner, Rep. N. Y. State 

 Mus., Ill, 246 (= robiniae $) (1878). 



Xyleutes crepera Packard, Proc. Ent. Soc, Phil., Ill, p. 388 (1864). 



Cossus plagiaius Walker, Cat. Lep. Het. Brit. Mus., 7, 1515 (1856); D'Urban, 

 Can. Nat. & Geol., p. 247 (= McMurtrici Peale, in err.) (i860) ; Lint- 

 ner, Rep. N. Y. State Mus. XXX, p. 245 (spec indet.) (1878); Ed- 

 wards, Ent. News, II, p. 72 (^ 9 robiniae) (1891). 



Xyleutes plagiatus Packard, Proc Ent. Soc, Phil., Ill, p. 390 (= Mac Murtrici, 

 Peale., in err.) (1864). 



Xystus plagiatus Grote, Am. Phil, Soc, p. 263 (= Mac Murtrei, Boisd., in err.) 

 (1874). 



Cossus zabolicus Strecker. Lep. Rhop. Het., Sup. I, 5 (1898); Dyar, Bull. 52 

 U. S. Nat. Mus., p. 362. (= robiniae 9) (1902). 



We have given only the more important references to this com- 

 mon and well-known species, and have omitted the numerous accounts 

 in state reports, etc. A further description we consider superfluous, 

 and would refer to the plate in Holland's Moth Book for an excellent 

 figi:re of this species. There are two aberrant forms which we consider 

 sufficiently distinct to warrant the names given them. 



(a) AB. 9 RETicuLATus. (PI. VII, fig. i). Lintner, Rep. N. Y. State Mus., 

 XXX, p. 242 (Texas) (1878). 



(?) Xyleutes querciperda Packard (non Fitch 1859) Proc. Ent. Soc, Phil., Ill, 

 389 (1864). 



This form diflfers froin the typical 9 in that it lacks the dark 

 patches and confluent spots ; the primaries are more transparent, espe- 

 cially in outer third, and the reticulations fainter; the secondaries are 

 nearly unifofm smoky brown with very faint traces of reticulations. 



