on the Upper Amazons. 5735 



other different species congregated, namely, I. Sao, I. Vestilla, I. 

 Onega, and I. Virginia, Hewits. (Exot. Butt., Itbom., fig. 18). At Ega 

 I. Vestilla and I. Sao assemble in one place, in the months October to 

 December, in countless numbers ; the forest dell is alive with them, 

 fluttering and gambolling together about the foliage near the ground; 

 in company with them are the two handsome species resembling 

 Thyridia, but much rarer. 



In Coleoptera I made some charming acquisitions. First of all an 

 Iresia, the first I have captured since 1 have been in the country, 

 although I had seen two at Santarem, but was unable to capture 

 them, from their habit of running over the cylindrical trunks of trees, 

 where the net is difficult to apply. 1 found also a new brilliant- 

 coloured Odontocheila, four new Lebiae and one Coptodera, two new 

 Ozaenae (Goniotropis) ; the Lebiae run very nimbly over foliage ; the 

 Coptoderae are found only on decaying, fallen trees. I got four new 

 Cassididae, one (I think) an undescribed Omaspides, one (also unde- 

 scribed) Dolichotoma, and one Calliapsis; the fourth is a very fine 

 thing, even the genus unknown to me. Another capture, which 

 pleased me extremely, was a Megalopus, of the section having 

 densely hirsute hind tibiae. Lacordaire describes two species, mine 

 will make a third ; 1 captured it from the terminal bud of some low- 

 climbing plant, and thought I had got a new Necydalis in my net. 

 A curious Chlamys was common here, and I added a fine new species 

 to my Alurni. A large number of the Eumolpi which occurred were 

 new to me, and many of them were very pretty. A new species of 

 Doryphora was common, and I found a solitary specimen of another, 

 very peculiar in its colours. In Lamellicornes I met with nothing 

 very conspicuous. One day I got a large brilliant Chlorota from a 

 leaf rather high up a tree, and found soon afterwards that the trees 

 over head swarmed with them ; doubtless they were gnawing the fruit, 

 as is the habit of many of the Rutelidae ; but, although they fell when 

 I shook the trees, booming past my ears, I could not capture a single 

 specimen : they made off through the entangled thicket, whither it was 

 impossible to pursue them. I found a pretty species of Bolax, rather 

 frequently, gnawing leaves ; it was quite new to me. The Copridae 

 were less interesting ; there were several new small species, as is the 

 case in each new station one visits. In Longicornes I found three 

 new species, in Elateridae only one conspicuously new, and in Bu- 

 preslidae not one species new to me. In Erotylidae there was a large 

 Erotylus (true), rather common, and new to me; it is yellow-belted, 

 whilst the corresponding species at Ega are red-belted, the latter not 



