(88 ) 



area, instead of having three chocolate blown spots, is crossed by a heavy con- 

 tinuous dark brown band, and there are three dark patches on the inner margin 

 instead of one. 



Hindwings more yellowish red than in A. palmeri, and the marginal and two 

 central bands narrower and more zigzag than in that species. The pink apex of 

 A. palmeri also is wanting in A. schausi. 



Expanse, 4 inches — W-l millim. 



Hab. Petropolis, Rio Janeiro (coll. Schaus). 



Ambulyx trilineata sp. uov. 



Nearest to A. placida Moure, but only half the size. 



Forewings %\w\Kt to A. placida in marking, but much darker in colour, and 

 more clouded. 



Hindwings orange with a black border and three zigzag, irregular lines 

 across the disc instead of two, as in A. placida. 



Expanse, 3 inches = 76-5 millim. 



Hab. Kiushiu, South Japan. 



ORYBA. 

 From a good series and from carefully comparing Boisduval's description of 

 0. robusta I am forced to sink Oryba imperialis (Druce) as a synonym of 0. robusta 

 of Walker. If, however, Boisduval's identification is wrong, there are two species 

 in Brazil, as 1 have U. imperialis from British Guiana and from Brazil, while my 

 specimens of 0. ackemenidei (Cramer) came from Triuidad. 



NEPHELE. 

 One new species to describe : 



Nephele aureomaculata sp. nov. 



This very distinct species inhabits the Upper Congo and has no near relative. 



Forewingn deep blackish brown, ending in a large diamond-shaped grey patch 

 extending the whole width of the outer margin. In the centre of tlie inner margin 

 is a large round blotch of a brownish orange colour. 



Hindwings blackish brown. 



Head and thorax brownish black. 



Abdomen, brown above, with alternate black and white transverse stripes on 

 the sides. 



Expanse, 3 inches = 76-5 millim. 



Hab. Upper Congo. 



SPHINGINAE. 



DILUDIA. 



I received large numbers of this genus from Aroa, Venezuela, and found them 

 exceedingly variable. 1 think from the great variety it will eventually be found 

 that 1). brevimargo Butl. and D. ra/escens Butl. will have to sink as synonyms, for 

 they are, in my opinion, mere aberrations of D. jiorestan (Stollj and D. lichenea 

 (Walk.). Venezuelan specimens of D. albiplaga (Walk.) are fully a third larger 



