386 Mr. E. Doubleday on some Lepidoptera. 



the second median nervule terminates being elongate : pearly 

 white, slightly tinged with yellow and sprinkled with black scales 

 near the base ; the outer margin broadly black, marked in the 

 sinuses with white. Cilia fuscous, spotted with white. 



Below, the anterior wings have the cell fuscous, darkest exter- 

 nally ; the fuscous colom- extending beyond the cell -, the outer 

 margin fuscous, with a series of white dots corresponding to those 

 of the upper surface, and the apex varied with brown, white and 

 yellow, the whole of the other parts of the wing pearly white. 

 Posterior wings pale brown, the costa at the base and a spot at 

 the origin of the costal and subcostal nervures crimson ; a ma- 

 cular band commences on the costa at the base and terminates 

 on the inner margin slightly below the middle, describing about 

 two-thirds of a circle ; this band is composed of numerous, irre- 

 gular white spots, divided by the nervures, each spot is marked 

 by a yellow vitta and bounded internally by an irregular or cu- 

 neiform black spot and externally by a waved black striga ; the 

 spot above the costal nervure is divided by a small black patch . 

 between this band and the margin is a broken white band di- 

 stinctly indicated on the inner and outer angle, nearly obsolete in 

 the middle of its course : between the nervules a series of fuscous 

 clouds more or less divided by a central yellow line. 



Head and antennse fuscous above, paler below. 



Thorax and base of abdomen clothed with long ashy hairs. 



Abdomen ashy white. 



The female differs in having the basal half of the anterior wings 

 entirely white except a powdering of fuscous at the base and along 

 the costa ; the outer margin black, the black extending into the 

 cell, beyond which is a short macular band divided into four parts 

 by the nervules, and beyond this a submarginal series of white 

 dots as in the male. 



In the collection of the British Museum, &c. 



I have named this beautiful species after its discoverer, Mr. D. 

 Dyson, who has for the past year been indefatigably exploring the 

 entomology of Venezuela. The female has a striking resemblance 

 above to Papilio EndochuSj bnt the black border is much wider. 



Eut. Teutila. Alls omnibus supra fuscis, fascia communi, media, 

 maculari, punctisque submarginalibus albis : subtus anticis fascia 

 media, maculari alba ; punctis vittisque albis, aurantiacisque : pos- 

 ticis nigro, aurantiaco, alboque variegatis. Exp. alar. 2\ una. vel 

 56 mill. 



Hah. Mexico. 



Above, all the wings fuscous, slightly irrorated at the base 

 with whitish scales, crossed by a narrow whitish band, commen- 

 cing in the cell of the anterior wings a short distance from the 



