76 Dr. A. G. Butler on the Old- World 



Var. 3. 



The outer border of primaries much narrower throughout. 

 The wet-season form is T. pumilaris (starved) and T. sina- 

 pina (full-sized) ; intergrades between the two extremes are 

 in the Museum series. The intermediate form is T. lifuana 

 == T. laratensis (the differences very slight) and the dry form 

 is unnamed. 



52. Terias brevicostatisj sp. n. 



Readily distinguishable from all species of this group by 

 the short costal margin to the primaries and the more rounded 

 outer margin; the apical portion of the external border is 

 consequently narrowed, just as though its outer edge had 

 been trimmed off ; the subapical angle of this border is more 

 obtuse than usual, the secondaries are subangulated at the end 

 of the second median branch ; the outer border of the 

 secondaries is well-defined, regularly sinuated internally, but 

 varies somewhat in width and length ; the general colour of 

 the male above is saffron-yellow and that of the female 

 citron-yellow; the markings below are normal, but not very 

 strongly defined in the wet and intermediate forms ; the dry 

 form is unknown to me. 



Expanse of wings 41-47 millim. 



Semao Island, Timor (coll. Hewitson), Wetter, (probably 

 Bourou), Batchian, Ternate, and Gilolo. 



The general aspect of the males is that of the T. Desjar- 

 dinsii group rather than of the T. hecabe group. 



53. Terias biformis. 



c? $ . Terias biformis, Butler, Ann. & Mag. Nat. Hist. ser. 5, vol. xiii. 



p. 196 (1884). 



$ . Terias lacteola, Distant, Rhop. Mai. p. 466, fig. 129 (1886). 

 2 . Terias ada, Distant, Ann. &Mag. Nat. Hist. ser. 5, vol. xix. p. 271 



(1887). 



Ranges from Nias through Borneo eastwards to Ternate 

 and Batchian, extending south to Amboyna and Ceram, and 

 probably crossing New Guinea, to reappear in the Louisiade 

 and Solomon groups. 



The males of this Terias seem to run very close to those of 

 T. sulphurata, of which species I should be inclined to regard 

 it as a variety but for the white or creamy colouring of the 

 females. In the Solomon group this type of female seems to 

 be abundant, whereas the yellow female of T. sulphurata 

 seems to be extremely rare; from Amboyna again I have 

 only seen white females. In the Solomon Islands the females 



