172 Mr. J. C. Moulton on the Bhopalocera 



Burchell gives a similar note on a specimen (406) of 

 Mor/)Jio achilles, L., caught 5 p. 7. 9. 28 between Jeragiui and 

 Cavalcanti, a little south of Porto Real. It reads thus: — 

 " Papilio. This species hovers low among the brushwood in 

 shady deep forests and is not easy to catch." The general 

 resemblance of the upperside of this Prepona and its congeners 

 to Morpho acIiiUes, L., suggests a possible mimetic association 

 between the two, which is still further borne out by this note 

 of Burchell's as to the similarity of their habits. The broad 

 iridescent blue band winch is so characteristic of both is 

 probably the one conspicuous feature when they are on the 

 wing, and thus an enemy would be less likely to notice the 

 difference in size. 



Westwood ]ilaced this date, without /2'/3, in his list of 

 Morphina?, but corrected the mistake afterwards, writing 

 " an var. Nymph. 16 ", which refers to 639 and 541. 



Frepona pkeridatnas, Crarn. 



Bz.+ S55. I. 24. 10. 25. c? = 541. Minas Geraes. 'Tap- 

 [ilio]. About JoHO Pedro's, at Discoberto : at the 

 margin of the forest." 



See note on Prepona amphimachus^ no. 539. This speci- 

 men bears two English labels as well as one Brazilian. 



The underside of this specimen differs in a remarkable way 

 from that of any individual of the same species in either the 

 British Museum, Godman-Salvin, or Hope Collections. The 

 upperside is, however, identically the same, and the fact that 

 the closely related genus Charaxes is extremely variable on 

 the underside also supports the conclusion that the specimen 

 is merely an interesting variety. This view is endorsed by 

 Mr. 11. Trinien, F.R.IS., who has very kindly examined the 

 specimen. Being unrepresented in any of the above-men- 

 tioned collections, a brief description may be of interest : — 



Underside. Reddish ochre, with centre rather lighter. 

 Fore wing : from base to apex of cell two patches of ground- 

 colour bordered externally by white margins, succeeded by a 

 thin, zigzag, dark brown line; a third patch follows this one, 

 bordered _/tr3< by a thin brown line, then again by a white 

 edging, a combination which continues downwards to the 

 first median nervide. Hind wing : central portion, ground- 

 colour mixed with white, giving a striolated appearance. 

 From junction of costa and hind margin to nearly halfway 

 along the second radial nervule a darker patch of ground- 

 colour joining hind margin and continuing to a point at end 

 of third median nervule. An ill-defined trace of band of 



