FOSSIL INSECTS FROM COLORADO. 171 



tinctly concave in outline, but in one or two they are virtually 

 straight, as in ours. The sculpture of the corium in our insect 

 is practically as in C. tertiaria, Heer, but the sides of the thorax 

 in front are more rounded than in that species. In the shape of 

 the head and thorax our insect closely resembles Neurocoris 

 rotiuidatus, Heer. 



Hah. Eocene shales about six miles north of Rifle, Colorado, 

 sent by Dr. S. M. Bradbury. Found at the same place as 

 Philorites, &c. 



The species is dedicated to the eminent authority on fossil 

 insects and also on living Hemiptera. 



CoREiDiE (Hemiptera). 

 Jadera (?) interita, sp. nov. 



Length about 6*5 mm. ; breadth of abdomen about 1-65, of thorax 

 about 1'75 ; antennce 4-3 mm. ; hind tibia a little over 3 mm. Head 

 and thorax dark reddish brown ; abdomen paler, with submargi 





orax ^^^ 

 lead ^^H 

 pnal I^H 



I 



Jadera (?) interita. 

 A. Hemielytron. B. Head with appendages. C. Abdomen. 



quadrate spots, five on each side ; antennas and legs brown ; hemi- 

 elytra with a dark pattern as show^n in the figure, but otherwise 

 pallid, the membrane wholly invisible. Rostrum reaching to base of 

 abdomen. Antenna very slender, with a slender club ; approximate 

 length of joints in jj. :— (1) 500. (2) 1360. (3) 1200. _ (4) 1100. Legs 

 slender, the femora somewhat thickened ; width of hind femora about 

 middle 425 /jl, of hind tibice at apex 187. 



This resembles Corizus guttatus, Scudd., from the Green River 

 shales of Wyoming, but in some material from Green River in 

 the Museum of Yale University I have seen what I suppose to be 

 C. guttatus, and it is certainly a different insect. The tegmina 

 or hemielytraof C. guttatus (type) were not preserved, so it is im- 

 possible to say what pattern they may have had. The present 

 insect is hardly a Corizus ; the lastantennal joint is too slender, 

 and the hind tibiae are too long and slender. Jadera (J. hamato- 

 loma, H. Schf.) agrees much better, even having a rather similar 

 elytral pattern, but it is a broader insect than the fossil, with 

 shorter legs. 



Hab. Eocene shales about six miles north of Rifle, Colorado, 

 sent by Dr. S. M. Bradbury. Found at the same place as 

 Eofulgorella, Philorites, &c. 



p 2 



