498 TERTIARY INSECTS OP NORTH AMERICA. 



EPIPHANIS Eschscholtz. 

 EPIPHANIS DELETUS. 



PL 5, Figs. 113, 114. 

 Epiphanis deletus Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., II, 80-81 (1876). 



On account of the structure of the antennae and general resemblance of 

 this insect to Epiphanis cornutus Eschsch, I have placed it in the same 

 genus ; but the form of the prothorax differs somewhat in the two species. 

 The head is moderately large, subquadrate, the antenna?, moniliforni, com- 

 posed of twelve (preserved) equal joints. The thorax is nearly quadrate 

 with straight sides, the front lateral angles rectangular, the front border 

 straight or scarcely concave, the hind border slightly angulate ; the elytra 

 are slender and taper from the middle backward ; they are too poorly pre- 

 served to show the markings. 



Length, 5 mm ; breadth, 1.52 mm ; length of head, 0.94 mm ; breadth of 

 same, 0.96 mm ; length of prothorax, 1.1 2 mm ; breadth of same, 1.2 4 ram ; length 

 of elytra, 2.85 mm ; breadth of same, 0.76 mm ; length of antennae, 1.6 mm ; of 

 sixth joint of same, 0.13 mm . 



Fossil Canon, White River, Utah. One specimen (W. Dentou). 



ELATERHXJ; 1 sp. 

 PL 2, Fig. 28. 



Elattriila:? sp. Scudd., Krp. Prog]-. Gi-ol. Surv. Cau., 1877-1B78, 182B (187U). 



In the Collection of the Geological Survey of Canada there is an elytron 

 with the base nearly destroyed which resembles in striation the Hydro- 

 philidae, but is far too elongated to belong to that family, resembling rather 

 the Elateridae. It is so imperfectly preserved that, perhaps, a nearer determi- 

 nation is impossible at present. There are eight rather faintly impressed but 

 distinct stria?, the outermost a little more distinct, especially toward the tip. 



Width of elytron, 1.25 mm ; its apparent length, 4.5 mm . 



Nicola River, below main coal seam, British Columbia. One specimen, 

 No. 60 (Dr. G. M. Dawson). 



