Lepidoptera from Dutch New Guinea, 217 
Papilionida. 
Papilio (Troides) goliath, Ob. 
Ornithoptera goliath, Oberthiir, Et. d’Ent. xix. p. 1, pl. iv. fig. 19 
(1894). @. 
The ¢ of this species, which we now describe, was taken 
by Messrs. A., C., and F. Pratt during their expedition to 
Waigeu in 1915, and is unique. 
Compared with allied forms, it is distinguished by reduc- 
tion of the green areas on the fore wing. In size and general 
appearance it is close to samson, Niep.*, from the Arfak. 
The green costal band is indented below vein 7 as in 
supremus, Rob. ‘The posterior green patch is much invaded 
by black, leaving a narrow distal portion, and inner marginal 
stripe, and green dusting in the area below vein 2. The 
hind wing is like samson, with the same relatively broad. 
green outer margin to the yellow area, and absence of black 
scaling on the three discal spots. 
The underside of the fore wing shows increased black in 
cellule 7 as compared with other forms. The small and 
separate black submarginal spots areasin samson. The hind 
wing is like the figured samson, except that whereas this 
form shows the whole base of cellule 8 scaled with green, in 
goliath there is but a trace of green at the extreme base. 
In the Tring Museum there is a g from the New Guinea 
coast opposite Waigeu, which, though not identical with the 
goliath here described, very closely approaches it and samson. 
More material is necessary to establish the racial distinctions 
of these forms. We have found that many butterflies from 
Waigeu are not racially different from specimens inhabiting 
the Arfak and north coast districts when a good series is 
compared. It is therefore probable, considering the greater 
powers of flight possessed by these Papilio, that goliath as a 
race extends over a wider range than the island of Waigeu. 
It is curious that the ? of goliath figured by Oberthiir is 
much nearer the supremus form from German New Guinea 
than it is to samson from the Arfak. 
Pieridae.” 
Delias ladas watgeuensis, subsp. n. 
go 2. Differs from typical form in the reduced apical 
* Ornithoptera samson, Niepelt, Int. Ent. Zeit. vi. p. 281 (1913) (Arfak 
Mtns.); Lep. Niep. p. 54, pl. iii. fig. 1, d, pl. vi. fig. 1, 2 (1918), 
Ann, & Mag. N. Hist. Ser. 8. Vol. xx, 15 
