( ix ) 



and of a paler coloui* than in ilione. It also tapers moi'e 

 gradually into the shaft on to which the yellow tint is often 

 prolonged, generally for a short distance, occasionally as far 

 as in /. lamirus. 



Eutresis imitatrix and an allied unnamed species. The 

 antennae resemble the appearance most usual in /. phenai'ete, 

 but the depth of the orange tint is as in /. ilione. A similar 

 appearance is presented by the females and 2 males of Eutresis 

 hyspa, Godm. and Sal v. 



Eutresis other species. The antennae of 4 males of E. hyspa 

 and of all the remaining species of the genus are similar to 

 those of /. lamirus. 



Hence as regai-ds this prominent feature, the brownish 

 translucent Ituna Imnirus resembles the similarly coloured 

 species of EtUresis ; the transparent black-marked species of 

 Eutresis {iniitatri.r, etc.) resemble the transparent and black 

 I.phenarete; while Ituna ilione resembles the primary Ithomiine 

 models. 



The remaining points of comparison are confined to elements 

 in the pattei^n of the upper surface of the fore- wing. 



All the species of Eutresis in the British Museum, except 

 E. imitatrix, a single specimen of an allied unnamed form, 

 and certain individuals of E. /ti/spn, possess, on the fore- wing 

 uppei'-surface a submarginal row of six iuternervular pale 

 yellowish spots, somewhat more yellow and less transparent 

 than the large transparent areas of the wing. In E. imitatrix 

 and the undescribed form, the four submarginal spots nearest 

 the apex, although still traceable by change of tint and 

 degree of transparency, fuse with and become part of the large 

 apical transparent area. The .same tendency, although less 

 marked, is seen in Eutresis hyspa, especially in two females 

 from Ecuador. In the above-mentioned three forms the black 

 band which in other species cuts off the four apical spots from 

 the transparent area, becomes very indistinct, and resembles a 

 faint cloudy dark bar which in the transparent Itunas also 

 cuts off a more opaque yellower distal section of the apical 

 area. Comparing these Itunas {ilione and jy/ienarete) with the 

 less transparent /. lamirus, Latr., it is seen that the faint 

 cloudy bar corresponds to the black ground-colour which 



