500 Rev. K. St. Aubyn Rogers' Bioiiomic Notes on 



tiberius $ are fairly good mimics. This combination is 

 however more distinguished than that last described by 

 the strength and beauty of the secondary mimetic resem- 

 blances. The model and chief Nymphaline mimics are well 

 seen, represented |- of the natural size, on Plate XXVII. 

 The plate includes the female of Uuxanthe wakeficldi (Fig. 

 2) with a pattern resembling that of this combination, but 

 in life an outlying member of the association with A. 

 dominicanus for its centre, 



Nymphaline. Pseudacrssa lucretia, Cram., sub-sp. 

 exjmnsa, Butl. (Plate XXVII, fig. 4). 

 Euralia dcceptor, Trim. (Fig. 6). 

 Euralia Idrhyi, Butl. (Fig. 5). 

 Eiixanthe tiberius, Gr.-Sm., $ (Fig. 3). 

 Aterica galene, Brown (white f. of $). 



Amaiiris ochlea, Boisd. (Plate XXVII, fig, 1). The 

 habits of the central model of this association are quite 

 like those of A. niavkts dominicanus, except that it is a 

 little more partial to the open country, and is fonder of 

 flowers. 



Psendacra hicretia, Cram., sub-sp. cxjxmsa, Butl. (Plate 

 XXVII, fig. 4). This species often settles on leaves with 

 wings expanded, and in every way it has much more the 

 appearance of a large Ncptis than any of the other mem- 

 bers of the combination. Although the pattern of this 

 species so closely resembles that of the two Euralias the 

 Pscudacrxa appears whiter on the wing and has a more 

 floating flight. It is possible that the characteristic 

 curve of the large spots of the fore- wing, to which Pro- 

 fessor Poulton has drawn attention, has been influenced 

 by the curved band in the fore-wing so well marked in 

 this genus, of which i\'^, agatha is a good example. I have 

 only seen the species near Rabai. 



Purcdia dcceptor, Trim. (Plate XXVII, fig. 6), and 

 E. Jcirh/i, Butl. (Fig. 5). The two Euralias resemble one 

 another strongly, especially on the wing, and are active 

 insects very fond of pursuing butterflies of their own and 

 other species. I have little doubt, however, that in the 

 position of permanent rest they would follow the Dauaine 

 model, and in fact I have observed E. deceptoi^ in this 

 attitude. 



[Momhasa, April 5, 1905. I have only seen PscuclacriBa 

 expansa near Rabai, and Hyj)olimnas {Euralia) dcceptor and 



