4 Mr. H. W. Bates's Notes 



however, more frequently the moist margins of the water on 

 sandy beaches (the Call'tlhece do so sometimes), is very wary, 

 and flies off in a sailing, circular manner to the borders of the 

 forest, where it settles high up on the foliage. It is rare at Ega, 

 and I did not see it on my excursion to Tunantins. 



Caerois chorinceus. — I have found one or two of this species at 

 Ega, and one at Tunantins. One I took on the Cupari, up the 

 Tapajos ; so that it is widely distributed, but it is one of the 

 rarest of butterflies. The figure in Cramer is bad, as the caudal 

 lobe is represented as turned in a wrong direction, I suppose 

 some one has by this time discovered the curious structure of the 

 fore leg in $ : it has the tibia and tarsus reduced to a rudi- 

 mentary hook-shaped joint, like the Mechnnites and Ithomice. 

 The mode of flight of the species is exactly that of the larger 

 brown ISatyri, slow and heavy, near the ground, threading the 

 shadiest thickets, and reposing on a leaf, wings erect, closed. 



Mesosemice, — The Mesosemice form, with a few allied genera, a 

 sub-family oC Erijcinid£e, nearly approaching the Satyridce. Their- 

 neuration is after a distinct type. 



The true Mesosemice are rather feeble in flight, but sustain 

 themselves on the wing longer before settling than any other of 

 the Erycinidce : nearly all settle on the upper surface of leaves, 

 with the wings held half erect. Two or three species, however, 

 amongst them M. Crcesus, fly rather more rapidly, and settle 

 underneath leaves with the wings horizontal, like the genus 

 Nymphidium. All are found in the shades of the forest, never 

 even by exception being seen in open grounds ; some are only 

 found in the gloomiest shades of the virgin forest ; Eunogyra 

 Sutyrus, for instance, which flies very near the ground and settles 

 under leaves only a few inches above it, the wings held horizon- 

 tally. 



Nymphidium, Lemonias, Emesis, Symmachia. — All these and 

 many other forms are genera of the sub-family Nyinphydiince, 

 distinguished by their neuration, and found in thinned parts of 

 the lorest or on its borders ; their flight very short and not rapid, 

 settling always on the underside of leaves with the wings held 

 horizontally. Tlie species are not so local in their distribution as 

 most other genera of Erycinidce. We have several species com- 

 mon at all the stations I have visited, as may have been observed 

 in the collections I have sent home to England. 



