Some specimens of 0. formosa received from Perak are much paler in line, and seem 

 to connect it with the form or species I described as C. earli {anUa, p. 141). Mr. de 

 Niceville has communicated his opinion to me that he considers C. cocks, C. formosa and 

 C* earli to be all phases of one species, and certainly there is much to impress this view, which 

 if accepted must also include and syiionymtcally sink several other described " species/' 

 Actual breeding must, however, decide this question, and at present I treat them here as 

 distinct. Certainly C, codes is much further removed from 0. formosa than the last named 

 is from C* earli,* 



5. Cyrestis penander. (Tab. XLL f fig. 10,) 



Papitw Pmiauder, Fabrieius, Mant, Ins. ii. p. 9, n. 74 (1767) , Ent. Syst. ill. p. 65, m 204 (1793) ; Don. Ins. 



Ind. t. 87, t 1 11800), 

 Nymphuiis Perifindtr, Godt* Enc. Meth. ix. p. 362, Q. 42 (1828). 

 PajJtia Ptrimtdtr, Horsf, Cat. Lep. E.LC, t. 5, f, 8, 3<i (1829). 



Cyrettis Ptriander, Horsf. A Moore, Cat. Lep. Mus. K. L C. vol. i. p. 147, D, 2<J9 (1857) ; Butl Cat. Fabr. Lep, 

 p. 82, n. 2 (lflG9). 



Cyrestis Thrmire, Honratb, BerL EntomoL Zeitschr. Bd. xxviii. Heft 1, p. 898, t. x. f. 5 {1884|. 



Male and Female. Wings above ereamj white ; anterior wings with the following pale ocnraceous 

 fascia : — two near base, third not extending beneath cell, fourth crossing wing, fifth not extending beneath 

 cell, and the sixth again crossing wing, apex and outer margin dark fuscous and containing an inner row 

 of blackish spots and a submarginal blackish line margined on each side with greyish-white, fringe obscure 

 greyish ; posterior wings with the following pale ochraceous fascire, — two near base, neither of which reach 

 the abdominal margin, the third oblique, fourth and fifth crossing wing and fused towards anal angle, 

 a large pale ochraceous submarginal patch extending from about the discoidal nervule to the anal angle, 

 outer margin dark fuscous with an inner series of greyish spots with blackish centres and margins situate 

 on a blackish waved line outwardly margined with greyish, a Rubmarginal waved blackish line margined on 

 each side with greyish and the fringe obscure greyish. Wings beneath as above, but with the ochraceous 

 fascife narrower, paler, and somewhat less continuous and more broken. Body above pale fuscous, beneath 

 with legs more or less concolorous with wings. 



Exp, wings, J and t, 38 to 48 millim, 



Hjui. — Continental India; Assam (Brit. Mus.). — Malay Peninsula ; P e nan g (Biggs & Egertou — coll. 

 Dist.) ; Perak (KiinstL — coll. IIonraLli). — Java i Horsf. it Moore). 



Genus CHERSONESIA p. 142), 



2, Chersonesia peraka, (Tab. XL., fig. 6). 



Cherstmwia peraka t Distant, Ann. & Mag, Nat. Hist, ser, 6, vol. xiv. p. 191) [1884). 



Allied to G.ratoi&i Moore, hut smaller, the ground-colour more ochraceous and Icsb rufouB; markings 

 similar, but with the transverse fascife broader, much darker, and placed closer together. The obsolete 

 caudate prolongations in C\ ruhria near the apices of the hrst and third median nervules are scarcely 

 visible in C\ peraha, and a structural peculiarity exists in the first subcostal nervule of the anterior wings, 

 which in the species I here describe impinges near its base on the costal nervure. 



Exp. wiugs, ^ , 28 millim, ; ? f 34 millim. 



Hab. — Malay Peninsula; Perak (Kiinstl.— Calc. Mus.), 



* Tho raitaniimlatory path of the upecinc discriminator is not enlightened, but rather darkened, by such unexpected 

 problems as these poor Cyreatid* afford. In fact, the whole canon of specific differ puliation frequently partakes of the nature 

 of the old scholastic jargon, and some futiu-e historian who may write on tho clafisiiicatory Hvstem pursued bv many naturalists 

 of those days might almost orb the words of the venoraMe-^-or to some flippant- Jortin who, writing of a.d. KJOO, 



remarks: — "In this age, though dark and ignorant, a. subtle question was started, relating to dialectics, concerning winTrW*, 



as they were called, or the genera and tpecies rerum; whether they were Tealitits and substances, or mere names This 



controversy wojj warmly agitated for many ages and caused furious contentious."— [' Remarks upon Ecclesiastical Iliatory.') 



