( •'591 ) 



of more or less Innate and generally contiwnous spots is greyish white. The black 

 border of the hiadwiug is broader than in D. a. alhertisi and widens posteriorly 

 in both sexes. The size and shape of the black discal spot varies considerably, 

 the spot being continned backwards to near M' in several specimens ; the diameter 

 measures from 2-5 — 7'5 mm. in a basi-distal direction. 



c. D. albertisi neyi Ribbe (1900). 



Deliax neyi Ribbe, Imel-leii-Boi-se, xvii. p. .S08 (190(1) (Aroa R.) ; Grose-Smith, Rlinp. Ex. iii., 



Delias, tab. 8. figs. 1 and 2 (UIOl). 

 Delias albertisi iiciji Roths., Nov. Zoul. p. 312. no. 'A (iy04). 



We have five (?(J of this race, all from the Aroa River (Weiske ; Meek) and 

 the neighbourhood of the St. Joseph's River (Meek) in the Owen Stanley Range, 

 British New Guinea. 



The white colour on the upperside of the forewing is nearly as much restricted 

 in these c?c? as in the ? ? of discus, and the hindwing also has a broader black 

 border than in the (?c? of discus, the border, however, being narrower than in 

 the ? ? of discus. The white patch on the underside of the forewing is about 

 the same size as in discus, but is rather better defined. The white snbapical band 

 is broader than in discus and albertisi, and has a distinct yellow tone in one of 

 the specimens. The orange area of the hindwing is larger than in discus and 

 more rounded proximally, resembling on the whole the area as figured by 

 Oberthiir of the ? of albertisi. The black discal spot is present in three specimens, 

 but reduced to a mere dot, absent from the left wing and vestigial on the right 

 one in the fourth example, and absent from both wings of the fifth specimen. 



IT. Delias catocausta spec. nov. 



c??. Supra cretacea nigro marginata ; alis posticis infra nigro fumosis ad 

 basin macula parva flava et ad cellnlae apicem altera nigra majore ornatis, 

 fasciaijne angusta parum difl'usa submargiuali alba, area abdominali flavescente. 



Near J), pratti Kenr., Trans. Ent. Soc. Lond. p. 177. tab. 6. fig. 2 (1009)) 

 which has the u|)perside of both wings black with the exception of the white 

 abdominal area of the hindwing. 



6- Upperside chalky white, as in 1). clathrata Roths. (1904), with a slight 

 blnish tone. The black costal border of the forewing invades the cell a little 

 and the outer border extends to the discocellular bar, which latter is only separated 

 from the outer border by some diffuse white scaling ; the border strongly narrows 

 I)osteriorly, being produced basad on the veins and measuring abont 1 mm. in 



width below the submedian vein. There are one or two white subapical dots. 



The black limbal band of the hindwing is about 1-5 mm. wide at R', and narrows 

 jjosteriorly and anteriorly, being broader at the veins than between them. 



On the underside the forewing is so much shaded witli black that of the white 

 area only one or two spots beyond the apex of the cell and a difl'use patch at the 

 hindmargin are left, the disc in between the spots and patch bearing dispersed 

 white scales and the subcostal spot being often yellowish ; a row of orange spots 

 (usually five) are placed before the ajiex ; the black border gradually merges into 

 the less deep black discal area. The base, a stripe along the yellowish abdominal 

 area, the distal border and a rounded spot situated outside the apex of the cell 



