234 



PSYCHE. 



[August, IQOI 



a single slave. These ants, of a deep 

 red color, slightl)' emarginate, form their 

 nests of rather woody materials, a little 

 like tninciiflla. Their aspect was other- 

 wise exactly like that of other saugiiuiea 

 of Europe and America. They attacked 

 and pillaged a bagful of siihscricea and 

 pallidefulva , which I placed near their 

 nest, exactly as do other sanguiiica, 

 wild with desire like them, to cany off 

 the pupae. The fact that these insects 

 lived in a populous colony of many nests 

 and had no slaves remains very curious, 

 to say the least. 



Formica suhsericca, which corresponds 

 to our fiisca and is only a race of it, 

 lives in the earth and in decayed logs. 

 Only about Niagara have I seen any of 

 its earthy domes, similar to those of its 

 European congener. 



Fo7-mka pallidcfulva and its innumer- 

 able varieties excavate their nests in 

 meadows and under stones. 



Catnpoiiotiis painsyl-i'ankus and pictus 

 are very common in trees, the second in 

 the north, the first everywhere. Pcnn- 

 sylvaukus runs rapidly on the roads and 

 along the trunks, like our piihesccns in 

 the Valais. Pictus is timid and lives in 

 small colonies in the trunks. Marginatus 

 and its varieties live as with us in the 

 bark of living trees, and castaticns is 

 found in the ground, in the southern 

 States. 



Lasius alicnus and nigcr live as with 

 us but with neither domes nor chambers 

 for their aphides. They mine solely and 

 are more retiring, only making here and 

 there little craters of sand. One finds 



them especially under stones. Lasius 

 myops makes no dome at all. It is 

 found under stones. In trunks in the 

 woods is found a large Lasius of a dark 

 and dirty yellow, related to affinis and 

 making its nest in the worm-eaten wood 

 of the trunks. The Acanthomyops make 

 their nests deeply excavated in the 

 fields. One discovers them only at 

 swarming-time. In this way I secured 

 at Morganton a species of it which 

 is probably new. 



Preuolcpis imparis marches in regular 

 files in going to its aphides. Its nest, 

 excavated in the earth, is well hidden 

 and so deep that I have been unable to 

 reach the bottom of it. 



Prcnolepis parvula makes little nests 

 everywhere, in wood, in dry leaves or in 

 the earth, and runs about on the turf 

 and in the forests. 



Brachymyrmcx Jiccri lives under 

 stones, sometimes in the woods; it is 

 widely distributed. 



Dorymyniuw pyramicus is represented 

 in the southern part of North America 

 by two distinct races, flavus and niger. 

 Both give off a very pronounced odor 

 of Tapinoma (anal glands) and nest 

 exactly like the pyramicus of tropical 

 America, hunting in the same fashion. 

 Here at Faisons I found a very curious 

 mixed formicary of these two races. 

 There were two or three nests of them 

 several meters apart. The yellow work- 

 ers and the black workers entered and 

 passed out peaceably side by side, 

 working together, and presenting every 

 sign of friendship. The two forms were 



