OOLEOPTEltA— CARABID^. 587 



from any at present existing, but it may be inferred that it is the species to 

 which our vicluus must look for its ancestry. 



" I liave named the s])ecies in honor of Mr. Charles M. Wheatley, of 

 Pha'nixville, to wlioni we are indebted for the exploration of the locality in 

 which the fossil insects were discovered." Horn, loc. cit. 



Including the stria; next the margins of the elytra there appear to be 

 fourteen in all ; the two outer ones are obscure and those upon the disk are 

 at an average distance apart of 0.375""" ; the striae appear to be faintly punct- 

 ured and the punctures as distant as the strife ; the intervals between the 

 strije are broken by irregular impressed lines producing a tuberculate ap- 

 peorance but otherwise smooth. The disk of the prothorax is considerably 

 more quadrate and proportionally liroader than in the species of Cychrus 

 with which Dr. Horn compares it. Indeed, I was at first inclined to believe 

 that the lateral lamellate rim was narrow and equal throughout, and there- 

 fore to place the insect in Calosoma (in the neighborhood of the species 

 sometimes referred to Callisthenes) ; but a renewed study in company with 

 Dr. Horn shows that this is a mistake, and that the rim broadens greatly 

 behind, leaving a somewhat shield-shaped disk as in Cychrus viduus. 



Length of thorax, 3.6"" ; breadth of same, 6°"" ; breadth of elytron, 

 B"""; length of fragment preserved, 12.75"°'. 



Bone caves of Port Kennedy, Pennsylvania." 



Cychrus minor. 



PI. 1, Fig, 2. 



Cychrus (mi)ior) Horn, Trans. Auier. Eut. Soc, V, 243 (187G). 



"Two fragmentary elytra of smaller size than the preceding [C 

 wheatleyi] afford the only groundwork for the name above suggested. 

 The striae are fine and with fine punctures, the intervals feebly convex, 

 evidently slightly rugulose, and probably, also spai-sely punctulate. An 

 impression of the scutellum remains which is broadly triangular, and not 

 different in form from that of andrewsii. 



"Elytra (restored). Length, .54 inch; 13.5"". Width (actual), .15 

 inch; 3.75"". 



"The form is therefore almost exactly that of andrewsii." Horn, loc. 

 cit. 



There is a slight bluish cast to the black chitinous parts of the elytra 



