COLLECTED IN DUTCH NEW GUINEA 5 



6 new forms, 3 of which are unhke anything known hitherto. The remaining 11 

 pierine species are widely distrihnted Papuan forms. 



14. Delias inferna irma Fruhst. 



Delias arutin irma Frulistorfer, Sue. Evt. xxi. p. 179 (1907) (Britisli New Guinea). 



Herr Fruhstorfer has united all the orange Delias with dark undersides from the 

 Moluccan and Papuan regions as subspecies of Delias aruna Boisd. I prefer to treat 

 them as two species, D. artma with 2 subspecies and D. inferna also with 2 subspecies. 

 My reason for doing so is that, although in the Geelvink Bay and Roon Island specimens 

 the black base appears to run into the crimson patch on the underside of the hindwings, 

 somewhat obscuring it, these specimens cannot be called intermediates; and so far, 

 although 1 have examined several hundred specimens, I have never yet seen a con- 

 necting link between D. aruna and D. inferna in either sex. In the above-quoted 

 article, Herr Fruhstorfer distinguishes 5 subspecies of this group with red discal patches 

 on the underside, but I can only distinguish 2 : D. aruna aruna with the discal red 

 patch NOT suflused with black, and D. aruna rona with the patch suffused with black ; 

 all the characters given for the other races break down when a large series is examined. 

 I agree with Herr Fruhstorfer, however, in separating the 2 subspecies of D. inferna. 

 D. inferna irma from the southern and central parts of New Guinea is usually much 

 larger, and always has the black edging to the hindwing broader than in D. inferna 

 inferna, which is confined to the Cape York Peninsula of Queensland. It is quite 

 possible that inland from the Huon Gulf intermediate forms exist Uniting up D. inferna 

 with D. aruna, but until the discovery of these linlvs it is better to treat them as two 

 species. 



7 cJ^ Base Camp, Nov. — Dec. 1912 ; 3 o J Canoe Camp, Dec. 1912 ; 1 cJ Utakwa 

 River, 2500-3000 ft., Jan. 1913. 



15. Delias mysis lara (Boisd.) 



Pieris lara Boisduval, Sp. Gen. i. p. 461 (1836) (New Guinea). 



3 oV Base Camp, Jan. 1913 ; 1 ? Utakwa River, 2500-3000 ft., Feb. 1913 ; 1 3 Canoe 

 Camp, Nov. 1912. 



16. Delias zarate flavidior subsp. nov. 



Herr Fruhstorfer places zarate Grose Smith as a subspecies of gahia, but the occurrence 

 of this form of zarate together with typical gabia in one place proves zarate to be a 

 distinct species. 



o". Differs from zarate zarate in being smaller and the black markings above nnich 

 reduced, the hindwing merely being edged with black ; below the hindwing is sulphur 

 yellow, not deep yellow, and has a much narrower unspotted, dark margin. 



1 $ Utakwa River, 40CO-60GO ft., Dec. 1912— Jan. 1913. 



