( 77 ) 



Theretra olivacea sp. nov. 



Oround colour oi the foreioinffs olive pink, shading into dec]) olive towards tlie 

 costa. In the cell is a small ronnd black stigma. From the ajiex to the centre of 

 tlie inner margin of the I'orewings rnns a broad oblique transverse line of bright 

 olive green, and on each side of it three hair-like lines of the same colour. 



llindtcings black, with a broad central band of olivaceous buff. 



Head and thorax olive green, with centre and borders pinkish grey. 



Abdonii'ii pinkish grey, with darker central line and a big olive patch on each 

 side of the first and second segments. 



Expanse, 3 inches = 76-.J niillim. 



Hub. Sao Paulo, Brazil. 



Theretra guianensis s|i. nov. 

 This species is nearest to Theretra cerfifomioides (Grote and Rob.). 



ForeiviiK/s in T. rrratomioides buffy brown, while in the new species they are 

 very dark chestnut brown ; but the most conspicuous ditfereuce is that the three 

 central oblique transverse lines whidi start from near the apex and reach to the 

 centre of the inner margin run almost perfectly straight in T. (/aianensis, while in 

 T. cerafomioides, about a third of their length away from the inner margin, they 

 curve sharply inwards antl then out again, enclosing a large jiale buft" area. 



Hindwings black, without the vermiculated brown border which is jjresent in 

 T. Ci'ratomioides. The buff band on the hiadwings also much narrower and almost 

 completely obliterated, and the spots near the base and at the anal angle a.re much 

 smaller. 



I'liderskle : forewings much more uniform red and black, the freckles and 

 vermiculations found in T. ceratomioides being absent. 



Himlwings very dark, with two distinct black longitudinal Ijands. 



Head, thorax, and abdomen similar to T. ceratomioides, but all markings larger 

 and more accentuated. 



Expanse: T. ceratomioides 4 inches = lif2 millim. ; T. i/xianoisis 5 inches = 

 127-5 millim. 



Hub. British Guiana. 



Theretra perviridis sp. nov. 

 (PI. v., fig. 12.) 



Forewings olive green, with the costa more tawny. Fi'om the apex to the 

 centre of the liindmargin run several parallel oblique transverse lines of a d;irk 

 green culour, the exterior one being broadest. Stigma in cell black. Outer margin 

 deeply hooked at the apex. 



Hindwings : base pale bnfl', rest olive green, with large trianguhir sjiot in the 

 centre. 



Underside pale ochre yellow, densely freckled with black linear s]iiits and 

 crossed over both pairs of wings by two indistinct transverse lines. 



Head, thorax, and abdomen olive green, gradually shading off into tawny. 



Expanse, 2'9 inches = 74 millim. 



Uab. Aroa, Venezuela. 



