COLLECTED IN DUTCH NEW GUINEA 29 



133. Nacaduba meiranganus (Rob.) 



Plebeius meiranganus Rober, 7m, i. p. 65, p]. 5, fig. 23, 25 (1885) (Aru). 



1 J 1 ? Base Camp, Nov. 1912— March 1913 ; 1 o^ Canoe Camp, Nov. 1912. 



134. Nacaduba proxima sp. nov. 



(J Nearest to atrata Horsfield. 



Differs on the iipperside in being darker; the costal black margin of forewing is 

 narrower, the terminal margin is broader ; and on hind^ving the margin is much narrower 

 and the white submarginal line more distinct. Below the white bands are much more 

 distinct, the marginal band has no black spots, and the submarginal band is not sinuous 

 and has no black interspaces. 



Expanse 33 mm. Length of forewing 15 mm. 



2 33 Base Camp, Jan.— March 1913 ; 2 3<S Canoe Camp, Nov.— Dec. 1912. 



135. Nacaduba subdubiosa sp. nov. 



<?. Differs from duhiosa Semper by its larger size and above by its gi-ey-blue not 

 reddish- violet colour. Below it differs in the brown-grey, not ash-grey ground colour, 

 and the much narrower and almost obsolescent white lines ; on the hindwing the two 

 submarginal tornal spots are smaller. 



Expanse 30 mm. Length of forewing 14 mm. 



(Expanse of N. duhiosa 23-25 mm. Length of forewing 10-11 mm.) 



1 cJ Base Camp, Nov. 1912 ; 1 3 Canoe Camp, Dec. 1912 ; 1 3 Utakwa River, 4000- 

 6000 ft., Dec. 1912— Jan. 1913. 



136. Nacaduba tristis sp. nov. 



(?. Above, entirely leaden- violet-blue, fringe black, tail on hindwing long. Below, 

 forewing brownish mouse-grey, pale bands fairly distinct, a submarginal and marginal 

 row of large dark grey spots. Hindwing : the pale bands are much more distinct than 

 on fore\ving and distinctly white, a black and orange tornal spot and a much larger 

 similar one on vein 1. 



Expanse 37 mm. Length of forewing 14 nun. 



1 3 Base Camp, March 1913. 



137. Nacaduba argioloides sp. nov. 



(J. Above, bright lavender blue, and has almost the exact appearance of our P]uropean 

 species argiolus. Forewing, costal edge black, fringe black, passing into greyish out- 

 wardly, tornal 1 of inner margin white. Hindwing, marginal edge black, fringe greyish 

 white. Below, ash-grey, 2 whitish lines across cell, 2 shorter ones beyond cell, 

 and 2 spirally entwined postdiscal ones, a submarginal row of sagittate larger spots 



