in the Basin of the Amazons. 281 



specimen in the British Museum Collection from Espiritu 

 Santo, and as a consequence, the white edgings of the 

 dark lines are more conspicuous. The species will 

 probably prove a variable one : I am not sure that 

 Lederer's Boti/s pruinalis, W. E. M., vii., pp. 373, 469, 

 pi. 9, fig. 6, is not the same insect. Walker's type of 

 B. agavealis was from St. Domingo, from Mr. Tweedie's 

 collection. 



Lederer had not seen Guenee's B. amissalis, and it 

 seems to me that there is but little difference between 

 Guenee's description of that species and Lederer's own 

 figure of P. ramentalis. It should be noted that Lederer 

 gives no real detailed description of P. ramentalis. Lederer 

 again was unacquainted with the 2 of either species, 

 but a comparison of the palpi of Walker's B. agavealis 

 with those of his {B. ?) lijsanderalis shows them to be 

 identical. The ? is somewhat more densely scaled, and 

 the basal line is quite plain, not being obscured, as in 

 the <? , by the basal fold and scales. Besides the 

 example from Espiritu Santo above mentioned, there is 

 a second ? from the same place, of rather smaller size, 

 and in poorer condition. I have quoted Walker's 

 synonym, lysanderalis, with a query, because bis descrip- 

 tion does not tally either with our present species or with 

 the example from Venezuela, which is placed in the 

 British Museum Collection under that name. It is 

 possible that Walker described B. lysanderalis from 

 specimens from Eio Janeiro, and subsequently, thinking 

 that he identified the specimen from Venezuela in Mr. 

 Dyson's collection, placed it in the cabinet accordingly. 



89. Preenesta scyllalis. 



Botys scyllalis, Wlk., Cat. Lep. Hat. B. M., xviii., 



p. 566 (1859). 

 B. delicatalis, Ld., W. E. M., vii., 376, 473, pi. ii., 



fig. 10. 

 Preenesta fabialis, Snellen, Tijd. v. Ent., 1875, xviii., 



p. 220, pi. 12, figs. 15, 16. 

 P. sinualis, Snellen, ib., figs. 17, 18. 



One <? . Tunantins, Nov. 23rd, 1874 ; at light. 

 Snellen's specimens were taken in January on the E. 

 Magdalena. The type in the British Museum Collection 



