12 



peculiar and striking character, I have concluded to make the 

 first of the tAvo following species the type of a new genus. 

 Epihlemmn faustum obscure, cephalothorax edged with white, 

 with two spots on the disk also white ; abdomen edged at base, 

 and with four short bands, white. U. palmarum, deep ferru- 

 ginous, with two bands on the cephalothorax and the abdomen, 

 white ; second, third and fourth pair of legs whitish. 



Besides these, I have three species of Attus, all very small, 

 which have the habitus of Formica f so much like ants in many 

 respects, that for a long time I neglected to collect them on 

 that account. Their body is elongated, slender, nodose ; and 

 their legs also are slender, either 4. 3. 1. 2. or 4. 1. 2. 3. The 

 cephalothorax in one, and the abdomen in all, are contracted in 

 the middle, so as to give them the appearance of being divided 

 in three or four joints. The other characters coincide generally 

 with Attus. They are found on plants. Should it be thought 

 convenient, those and any other new species with those charac- 

 ters, might be collected under the generic name of Synemosyna. 

 *********** 



It will be observed, that, in the above arrangement I have 

 departed from that of Latreille in no essential point, but justice 

 requires us to notice, that after the labors of the greatest living 

 entomologist, the method of Walckenaer may still be consid- 

 ered as somewhat more natural than that of Latreille. I have 

 given a sufficient account of the American genera, known to 

 me, to allow any person whose taste may lead him to study this 

 branch, to pursue the subject to a certain extent, and to assist 

 in bringing my Monographia to a less imperfect state than that 

 in which it now is. It is evident to me that if I had corres- 

 pondents in the various States of this Union Avho would be 

 willing to send me specimens, I could double my collection in a 

 few years. Some persons have been kind enough to send me 

 several interesting species, particularly Dr. Harris of Milton, 

 and Dr. C. [l09] Pickering of Philadelphia, to whom I am much 

 indebted ; but, when stuck through with a pin, and dried as 



