1889.] LEPIDOPTERA OF JAPAN AND COREA. 475 



Rather larger and darker in colour than most of my specimens 

 from Europe. 



y okohama (Jonas and Fryer) ; Oiwake {Pryer) ; Gensan {Leech) ; 

 North China ; Europe. 



2. ACRONYCTA TRIDENS. 



Noctua tridens, Schiff. Wien. Verz. p. Q7 ; Esp. Schmett. iv. 

 pi. 115. figs. 5-8. 



Acronycta tridens, Treit. Schmett. v. 1, 2C ; Guen. Noct. i. 

 p. 43. 



Acronycta increta, Butl. Ann. & Mag. Nat. Hist. (5) i. p. 78 

 (1878) ; 111. Typ. Lep. Het. iii. pi. xliv. fig. 3 (1879). 



Several specimens coll. Pryer, labelled A. increta. I took examples 

 at Gensan. In his Catalogue of the Lepidoptera of Japan Pryer says 

 of the larva of this insect, " very like A. tridens, which also probably 

 occurs here." 



The largest example in ray series from Japan measures 50 millim. 

 in expanse. 



Yokohama {Pryer and Munley) ; Gensan {Leech) ; Europe. 



3. Acronycta psi. 



Fhal.-Nociua psi, Linn. x. p. 514. 



Noctua psi, Esp. Schmett. iv. pi. 115. figs. 1-4. 



Acronycta psi, Treit. Schmett. v. 1. 30; Guen. Noct. i. p. 43. 



Four examples taken by myself at Gensan in June, and Fushiki in 

 July. There were no specimens in Mr. Pryer's collection. 

 Gensan, Fushiki {Leech) ; Europe. 



4. Acronycta digna. 



Thalpophila digna, Butl. Trans. Ent. Soc, 1881, p. 176. 



Acronycta michael, Oberth. Etud. d'Ent. x. p. 18, pi. ii. fig, 13 

 (1884). 



Several specimens, coll. Pryer. 



I have received this species from my native collector, who took 

 three examples at Gensan in July. 



Except that the secondaries of some examples are tinged with yel- 

 low, this species has no character in common with Thalpophila cythe- 

 rea, the insect with which Mr. Butler compares his digna ; further 

 it does not agree with the characters of the genus Thalpophila, Hiibn., 

 as diagnosed by 'Walker (Cat. Lep. Het. ix. p. 214), especially as 

 regards the antennae, which in digna are simple in both sexes. 



Ranges from 40 millim. to 52 millim. in expanse. 



Yokohama, Oiwake {Pryer) ; Corea, Sidemi {Janhowslci). 



5. Acronycta herculea. 



Acronycta herculea, Feld. Reis. Nov. cix. fig. 2. 

 Acronycta luteicoma, Grote, var. elongata, Oberth. Etud d'Ent. 

 X. p. 20, pi. ii. fig. 3(1884,) 

 Four examples, coll. Pryer. 

 Yokohama, Oiwake {Pryer) ; Sidemi {JatikowsJci). 



32* 



