If.ti RHOPALOCERA MALAY AN A. 



4. Delias ithiela (niitrn, p. 202). 



I inserted botli the description and fio-ure of this species on the authority of Mr. Butler, 

 wlio in 1869 described the species as from Penang ; and in 1871 figured it in another 

 pubhcation, still giving the same habitat. Mr. Butler now writes:* — "Originally described 

 from Penang, and on that account included by Mr. Distant in his ' Rhopalocera Malayana'; 

 this locality, however, was an error arising out of the fact that the type was labelled thus — 

 'P.', whicli with Wallace's specimens stands for 'Penang,' but with specimens received from 

 the East India Company (as Mr. Moore pointed out some two or three years since on a ticket 

 wliicli is attached to this very species) it stands for ' Darjeeling, Pearso)i.' Had Mr. Distant 

 examined my type, which by his own admission he did not do, he would have avoided the 

 repetition of this error." 



This argument would logically imply two axioms, viz. (1) Mr. Butler's recorded localities 

 cannot be taken without an examination and verification of the labels attached to his " types"; 

 and (2) if "types" are not contained in this country, neither names nor localities should be 

 used; a " rediwtio ad ahsunlam." Although Mr. Butler now definitely records his species from 

 the somewhat vague locality " Near Assam," I have thought it best to still let it appear in this 

 enumeration, as his " P." may yet prove to be Penang and not "Darjeeling, Pearson." 



9. Delias descombesi. (Tab. XLII., fig. 16 ,J .) 



ritrU ] >e6coii)lem' , Boisduval, Sp. Gen. i. p. 465, ii. 39 (1836). 



Thi/ca Descombesi, Wall. Trans. Ent. Soo. ser. 3, vol. iv. p. 350, n. 16 (1867). 



Di'liiis Descoiiibesi, Butl. Proc. Zool. Soc. 1872, p. 34, n. 44. 



Male. Wings above greyish-white ; anterior wings with the costal and outer margins — broadest at 

 apex — blackish ; posterior wings with the posterior margin blackish. Anterior wings beneath blackish, 

 a greyish spot at end of cell, three elongate subapical spots followed by smaller marginal spots of the same 

 colour, the median nervure and the two lower median nervules more or less powdered with greyish ; 

 posterior wings beneath bright orange-yellow, the costal and outer margin blackish, containing an oblong 

 vermilion patch at base and a marginal series of yellow spots. Body above blackish, beneath more or 

 less greyish, the sternum shaded with yellow. 



Female. Anterior wings above blackish, with the greyish spots more or less visible above ; posterior 

 wings with the blackish marginal border very broad. Wings above as in male. 



Exp. wings, c? & ? , 70 to 72 millim. 



Hab. — Continentallndia ; Silhet, Nepaul, Darjeeling (Brit. Mus.). — Burma; Moulmein (Brit. Mus.). — 

 JMaluy Peninsula ; Penang (Brit. Mus.) ; Province Wellesley (Birch — coll. Dist.). — Cochin China (Wallace). 



Genus TERIAS {antra, p. 302). 

 8. Terias lacteola, n. sp. 



Wings above milky-white ; anterior wings with the costal 



^^xv^?r^S margin narrowly and the apex, outer margin, and inner margin 



""U:i^f5~--^ — for a little more than one-fourth of its length — blackish ; this 



^~^-^v_., black apex and outer margin is arranged somewhat as in 



\\'^"' 4"^ ^- 1t''cah)', but broader; posterior wings with a narrow blackish 



A<^^>>' outer margin. Wings beneath creamy-white, the black markings 



I'ln. 1211.— roms lacteoin. reflected indistinctly beneath ; anterior wings with an irregularly 



* Ann. & Mivg. Nat. Hist. ser. 5, vol. xvi. p. 339 (1885). 



