540 MESSBS. H. H. DBUCB AND G. T. BETHUNE-BAKEB ON [June 20, 



Godiiian and Salvin's collection labelled " Ceram, Wallace," which 

 are undoubtedly true danis. 



We are obliged to place the Australian specimens under this name 

 as the males are identical, but although there are a considerable 

 number of specimens in Messrs. Godman and Salvin's possession 

 from Somerset, C. York, and also in the British Museum and in 

 our own collection, unfortunately there is not a single female 

 amongst them ; and, so far as we have been able to ascertain, those 

 writers who have remarked on this species have not stated whether 

 the female possesses any metallic blue above or not. 



From a note of Mr. Miskin's (loc. cit.) under D. ( = T.) serapis, 

 " specimens from Cape York and New Guinea of D. sehce I have 

 found to be tolerably stable in their appearance," one is inclined 

 to think there is not, as no New Guinea female specimens have 

 blue above, but, on the other hand, New Guinea males have con- 

 siderably larger white disks to the fore wing. This is a point 

 which requires looking further into when more material is 

 available. 



Dr. Haase has described and figured some of the scales of this 

 insect in his paper on the " Scent-apparatus of ludo-Australian 

 Butterflies" (Iris, i. pp. 106, 317, pl.iii. f. 12, 1886, 1888). 



Herr vSemper wTites (loc. cit.) : — " The females from the Aru Is. 

 and Australia have no blue on the upperside such as the illustra- 

 tions of Cramer's and the examples from Ceram show." If this 

 is the case, the Australian insect will probably come under the 

 species named T. apollonius by Dr. Felder. 



Guerin-Meneville (Voy. Coq.), in describing the male, writes : — 

 " Le male est plus petit (45 mill, d'enverg.), entierement noir en 

 dessus, avec les ailes anterieures arrondies au bout ; " which is 

 of course incorrect. 



Genitalia. Clasps longish, moderately slender, fork arising from 

 near base, rather short. Tegumen fairly developed, of Lycami 

 shape, but with saddle-backed hood reduced into a mere ridge and 

 thrown back [i. e. towards head of insect) ; hooks very long and 

 slender. 



Penis most unusually stout, but not long ; apical joint having a 

 sort of hinged cover at top apparently capable of closing over the 

 lower portion ; the apex or tip probably has the power of being 

 withdrawn into the main tube of organ. (Plate XLVII. figs. 1, 1 a.) 



The above description is taken from a male obtained from C. 

 York. 



Var. KAEPAiA, nov. (Plate XLV. figs. 3, 4.) 



d' . Upperside allied to T. danis, but rather lighter blue ; fore 

 wing with the white disk larger and more distinct ; hind wing with 

 the white considerably broader and with the blue extending farther 

 towards the anal angle. Underside as in T. danis, but with the 

 outer marginal border of hind wing which contains the blue 

 lunules much narrower, while the lunules are the same size, 

 consequently the white area is much enlarged. 



i 



