LEPIDOPTERA HETEROCERA 41 



Europe. 



Group 1 



Alae a'nticae litura ^ signatse. 



Triaena, Hubn. 

 Semaphora, Gukn. olim. 



Fore wings with a mark resembling the letter -if. 



1. ACRONYCTA TRIDENS. 



Carta ant cinerea ; abdomen albidum ; alee anticce striga tridentata 

 basali, litura -J/ discali lineisque duabus barbatis exterioribus 

 nigris ; postica cinereo-fuscce aut albidce. 



-, Roes, Ins. Bel. i. pi. 8. Engr. Pap. d'Eur. 287, 



a, e. A Ibin, Nat. Hist. Engl. Ins. pi. 86, f. . Harr. V. M. 



19. 

 Phalaena-Noctua tridens, Gmel. ed. Syst. Nat. i. 5,2553, 1130. 

 Noctua tridens, Wien. Verz. 67, I. Fabr. Mant. Ins. ii. 173, 254 ; 



Ent. Syst. iii. 2, 105, 314. Haw. Lep. Brit. 181. Sepp, Ins. 



ii. pi. 22. Esp. Schmett. iv. pi. 115, f. 5 — 8. Bork. Eur. 



Schmett. iv. 244, 107. 

 Noctua Psi, Hubn. Eur. Schmett. Noct. pi. 1, f. 5 ; Larv. Lep, iv. 



Noct. i. Bomb. B, b, f. 2, a. 

 Acronycta tridens, Treit. Schmett. Eur. v. 1,26,8. Dup. Hist. 



Nat. Lep. Fr. vi. 222, pi. 87, f. 2. Steph. HL Brit. Haust. iii. 



40, 6. Herr.-Schceff. Eur. Schmett. ii. 181, 11. Boisd. Ind. 



Meth. 94, 713. Guen. Noct. i. 43, 46. West. $• Humph. 



Brit. Moths, i. 198, pi. 42, f. 7, 18. 

 Triaena tridens, Hubn. Verz. Schmett. 201, 2031. Steph. Cat. Brit. 



Lep. 104, 2. 

 Acronyctia tridens, Meig. Handb. 149, 5 ; Syst. Besch. Eur. 



Schmett. iii. 70, 10, pi. 90, f. 10. 

 Semaphora tridens, Guen. Ess. Ann. Soc. Ent. Fr. vi. 235. 



a— n. England. From Mr. Stephens' collection. 



o—t. England. 



v—x. Europe. From M. Becker's collection. 



e 8 



