108 



in Wyoming Territory, on the line of the Union Pacific Railroad, 

 some 40 miles this side (east) Salt Lake City, or, to be more pre- 

 cise, the locality is 5 miles west of Green River City, and on the 

 Railroad Track. The shale or portion of shale in which the 

 insects were found runs in a circle from the N.E. to the S.W., as 

 if on the border of a small lake. I also noticed that the fish are 

 not in regular order, as the insects which cover a space about 2 

 feet wide and form a ring or belt around the lake." 



On the subject of the insects discovered by Mr. Richardson, 

 Mr. Scuddersays : "About 100 slabs, mostly of very small size, were 

 brought away; these contain at least 175 specimens, including in 

 that number all the reverses. Of these specimens, 35 cannot be 

 referred with certainty to any subordinate group, since they 

 consist merely of abdominal segments, or blurred and distorted 

 fragments, the affinities of which can only be rudely sunnised. 

 The remainder are referable to nearly 40 species belonging to the 

 following groups, mainly arranged in the order of numerical 

 superiority :— 



Bijotera 66 specimens — 13 sx^ecies. 



Coleoptera 52 „ —12 „ 



Hymenoptera T) ,, — 3 ,, 



Hemiptera 4 ,, — 2 ,, 



Orthoptera 4 ,, — 2 ,, 



Neuroptera 2 ,, — 2 ,, 



Quite recently Mr. Scudder has pubhshed a description of 

 two species of Orthopterous insects from the Rocky Mountain 

 Tertiaries. The first species Mr. Scudder has described as 

 llommogamia ventriosus and the latter as Labidura tertiaria. 



Since the date of the last mentioned paper, Mr. Scudder has 

 published detailed descriptions of 31 species of Coleoptera, most of 

 which were included in those before referred to as having been 

 found by Professor Denton and Mr. Richardson, and a few other.s 

 of which were found by Mr. Mead or by members of the United 

 States Geol. Survey. 



" In this paper," said Mr. Scudder, " are made known the 

 first fossil Coleoptera from the Tertiaries of the United States ; 



