98 



In that genus the antennae are said to be only serrated. I 

 went the next day to the same place, near a brook, where I 

 had "found so many treasures, to try to find more of these, and 

 very soon I found another ; though being smaller and some- 

 what different in habitus, I thought it might belong to an- 

 other species ; but, on examination, I found that its anten- 

 nae were filiform and slender, but not as long as the head 

 and thorax ; the other characters correspond very well with the 

 preceding. I do not know the genus Potamopliilus of Ger- 

 mar, and cannot refer this insect to it ; but notwithstanding the 

 vast difference in the antennae, these two species have cer- 

 tainly a great affinity to each other. Both have the anterior 

 portion of the sternum produced so as to cover the mouth. 

 Have you any European specimens of either genus, and do 

 you know whether Dryops has any resemblance to Blaps ? 



I have discovered this spring more than forty Cafabidce, 

 new to me, and I have found among other interesting ones a 

 new Elaphrus much larger than the riparius ? of Say, a new 

 Buprestis, related to your fulvoguttata, with five gold dots on 

 each elytron, a new Stilbolema with a hairy thorax and two 

 Lepturce, one of which is extremely small. Several species 

 of Amara and Harpalus have occurred which are so closely 

 related to them that they should evidently not be separated 

 as Latreille has done, but the two genera should be brought 

 near each other. H. rusticus, which you have, is an instance 

 of the great affinity between these two genera ; but that, with 

 several other species which I have, should constitute a new 

 genus connecting the two. 



Among the many Stapliylinidce collected this season are 

 two, or probably three, species which have affinities with 

 Pa'derus, though probably not belonging to that genus. The 

 eyes are very large and the head is much wider than the 

 thorax ; the antennas and trophi correspond tolerably well with 

 the description of that genus, except in one particular, which, 

 however, could not be observed in a dried specimen. In dis- 



