21 



able to point out between the two is not to be traced upon investigation ; there 

 appear to be simply darker or lighter individuals. The alleged difference in 

 form of the genitalia I am at present unable to admit either. Herr Fruh- 

 STORFER had the kindness to hand me photographic illustrations of the genitalia 

 of his two species Stolli and Logan i, that of the former, however, having 

 been prepared not from a Javanese specimen but from one from Sumatra. 

 Dr. Henri de Graaf, a specialist in this kind of researches, has investigated, 

 microscopically 25 specimens from my collection, both light and dark coloured, 

 and he did not find a single one amongst them whose genitalia agreed with 

 the figure given of those of Stolli, on the contrary they all agreed with those 

 given of Logani, and although considerable individual differences were observed 

 in this respect it was only as regards the form of the valvae and valvulae and 

 not to such an extent in connection with the structure of the principal organs 

 that the existence of more than one species could be inferred from it. For 

 this reason I am of opinion that for the present, at least as regards Java, all 

 these forms must be referred to a single species. I have nowhere met this 

 species so abundantly as Fruhstorfer has recorded it to be. 



The larva has been observed at Tjampea on a plant which has not been 

 identified (probably a Gvmnema). It is of the Euploea type, entirely jet-black 

 with milky-white transverse dorsal bands on the three thoracic segments and 

 on the third, fourth, fifth, and penultimate abdominal segments. At the sides 

 of the second and seventh abdominal segments a handsome red spot occurs, 

 which sometimes is diffused almost into a transverse band. 



Four pairs of long black processes are found on the second and third 

 thoracic and the second and penultimate abdominal segments, the two fore- 

 most pairs curved forward, the two hindmost somewhat curved backward. The 

 very handsome pupa, of a golden hue marbled with black, brown, and white, 

 is not of the Euploea type. From a pupa of February 27"^ the imago appeared 

 on March 12"'. The illustration of the larva has been made from a not quite 

 full-grown individual and is somewhat stiff. The larva grows larger. 



3. Leuconoe Erichs. 



Erichson, Nova Ada Acad. Nat. Cur., XVI, p. 283 



(1834) ■ Idea Leuconoe. 



DoLTBL. AND Hew., Gen. D. L., pi. 13, fig. 2 (1847). Hestia 

 Distant, Rhop. Mal.,p. 406, tab. 2,9^ fig- 3 (1882 — 1886). 



Snellen, Notes Leyden Mm., 17, />. 119 (1895) • • - van Natunensis. 



Tydschr. v. Ent. XXXIX, /. 43 (1896). . „ Leuconoe. 



