( "8 ) 



Boisilnval described aud figured a Palaeavctic 9 of nlecto as rirt/na ; at the 

 end of the description he referred to another insect as being perhaps the S ; this 

 latter he figured later on as the c? of cretica. The name creticu must of course 

 stand for what it was originally intended, namely the Palaearctic form of alecto. 



731. Theretra sufFusa. 



*C'liiirrurKiii/iit siiffiisa Walker, List Lqi. fii.i. B. M. viii. p. 140. u. 3l' (lS5li) (Hongkoug ; — Mus. 

 Brit.) ; Horsf. & Moore, Cat. Lq,. Ins. Mux. E. J. C. i. p. 275. n. ('.36 (1857) (China ; Borneo) : 

 Butl., 7'/v,u.s-. Zmil. S,u: Land. ix. p. 555. n. 7 (1877) (Hongkong; Borneo); Salv., Proc. Zn„L 

 S„i: Lu„:l. p. (U2 (1878) (Billiton I.) ; Butl., Illusti: Typ. SpeHin. Lq). llct. 'in. p. 1. t. 41. f. 1 

 (1879) ; Snell., Tijrhdir. Eiit. xxviii. p. 254. t. 9. f. 2 (1885) (Java) ; Swinh., Cat. Lep. Ihl. 

 Jfiis. O.r. i. p. 15. n. 58 (1802) (Sarawak ; Penang ; Singapore : Silhet ; Assam). 



Choerora inpa .'iiiffttsa Walker, Joiirn. Linn. Sm: Land. vi. p. 84. n. 11 (18(;2) (Sarawak) ; Boisd., 

 Spei: Gni. Up. Hit. i. p. 230. n, 7 (1875) (Assam). 



Choerociimpa hector id., t.c. 



Thcntra siiffiisa, Kirby, Cut. Lep. Het. i. p. 650. n. 8 (1892) (China ; Borneo). 



S ? . Closely allied to the preceding species. A greyish mesial band from 

 mesonotiim to end of abdomen ; the latter brown above, without black liasal patch, 

 an obscurely marked greyish dorso-lateral strij)e from segment -i backwards. Liues 

 1 and 5 of forewing heavy, 2 fused with 1, lines and 7 also rather heavy, inter- 

 spaces between 1 and 5 pale, between .5 and 6 dark. The black basal area of the 

 hindwiug much more restricted than in alecto, not dilated distad before abdominal 

 margin. 



Genital armature as in alecto, but the tenth steruite rather broader, more 

 obtuse, less curved ; process of harpe less slender, somewhat spoon-shaped, twisted. 



Early stages not known. 



IJab. Indo-Malayau Subregion : China, JS'orth India to Borneo and Java. 



In the Tring Museum 19 (?c?,9 ¥ ? from : China; Penang and Perak, ii. 

 (Curti.s) ; Singapore, v.; Loeboe Rajah, W. Sumatra (Ericsson); Sarawak. 



732. Theretra japonica. 



*ChocriicaiiiiKi japnnica Orza, Lep. Japon p. 3i'i. n. 79 (liSG9) ; Boisd., Spec. Gin. Lip. Hit. i. p. 241. 



n. 20 (1875) (coll. Charles Oberthiir). 

 CInicrocii iiipa Jdpun'mi , Butler, Trans. Zoiil. Sor. Land. ix. p. 560. n. 34. t. 91. f. 7. 8. 9 (/., //.) (1877) 



(Hakodate ; Japan ; Shanghai) : id., Proc. Zwl. Sue. Land. p. 816. n. 44 (1877) (Formosa) ; 



Staud., in Rom., Mem. Lip iii. p. 159 (1887) ; Leech, Pro,:. Zool. Soc. Land. p. 584. n. 14 (1888) 



(Satsuma, v. ; Nagasaki, vi. ; Hakodate, viii. ; Yokohama) ; id., Tnms. Enl. Hue. Lontl. p. 120. 



n. 99 (1M,S9) (Kiukiang) ; id.. I.e. p. 283. n. 52 (1898) (Yokohama; Satsuma; Hakodate; 



Kiukiang ; Chang- Y'ang ; Corea) ; Staud. & Reb., Cat. Leji. ed. iii. p. 103. n. 75(1 (1901). 

 Drilrjdul,! jojionieii, P'ixsen, in Rom., Mem. I^iji. iii. p. 320. n. 95 (1887) (Corea, vii.; = ijurtus err.) ; 



Bartei, in Ruhl, arusssehm. ii. p. 110 (190U). 

 Theretra jiipunini, Kirby, Cat. Lep. fief. i. p. 654. n. 43 (1K92). 



cj?. Dorsal lines of abdomen obscure. Uiscal band of forewing formed by 

 two separate lines, lines 1 and 2 being merged together, interspaces between lines 

 1+2 and ;") of nearly the same breadth. 



According to the dated material from Jajjan there is some seasonal variation, 

 the s])riug specimens being on the whole paler than the summer sjjecimens. The 

 Amur individuals which we have seen in collections are uni'ortunately not daleil,* 

 but both forms occur in Amurland as well as in China. 



* C'cillectors of ralacarctio Lepidoptera generally do not emu to Lave the spcciluell^ e-Nac-lly labelled. 

 The bad influence in this respect of certain dealers is everywiiere felt. Uur American brethren in 

 Eutoniologicis are mostly more advanced, even some of the dealers. One of the latlor was quite 

 astunished that we, being Europeans, wanted tlie date of capture of the specimens ; such a rocjuest had 

 never been made of hiui by a Kurupeiui Continental Lepidopterist. 



