92 Prof. J. O. Westwood on 



The male of P. Noctis is more glossy black, with the 

 apical portion of the fore-wings scarcely lighter than the 

 basal portion : whilst the male of P. Nockila, in addition 

 to the raven-purple colour of the upper side of the wings, 

 has the two discoidal veins and the two terminal branches 

 of the post-costal vein of the fore-wings slightly marked 

 on each side with a few luteous scales on the upper side, 

 whilst on the under side (which wants the purple gloss), 

 the six terminal longitudinal veins of the fore-wings are 

 more distinctly margined with luteous lines; the hind- 

 wings are small. 



The male of P. Nox is further distinguished by having 

 the front of the head and palpi clothed with pinkish-red 

 scales, as well as the posterior orbit of the eyes ; there is 

 also a spot of the same colour in front of the fore- wings, 

 and one beneath the base of each wing ; the anal valves 

 are also partially clothed with pinkish-red scales. 



The male of P. Noctis has the face and anal valves 

 blackish-brown, and destitute of the red scales, whilst the 

 male of P. Noctula has the lower part of the face slightly, 

 and the whole of the palpi, as well as the sides of the 

 collar and thorax, close to and beneath the base of the 

 wings, red. 



Papilio 8trix, nov. sp. PL IV. fig. 4. 



P. alis fceminae magnis, late ovatis, nigris ; omnibus 

 longitudinaliter luteo-striatis ; posticis mediocriter sinuatis 

 corpore nigro, facie, palpis, lateribus colli thoracisque 

 subtus alarum basin, anoque, rufo-notatis. 



Expans. alar. unc. 5|. 



Hah. — Borneo. In Mus. Hewitson. 



The female specimens (PL IV. fig. 4) in the collection 

 of Mr. Hewitson, which, from the identity of their locality, 

 I have considered may possibly be the true partners of 

 the males described above as P. Noctula, have very large 

 oval fore-wings, resembling those of P. Nox, whilst the 

 hind-wings are also comparatively of large size, but less 

 strongly sinuated than in P. Nox, thus resembling P. 

 Erehus, Wallace, Linn. Trans. XXV. p. 41 (from Malacca 

 = P. Nox, var. De Haan, Verh. t. 5, f. 3, 3), from Ban- 

 jermassing, Borneo. 



