524 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
CoORYMBITES PRIMITIVUS Wickham. 
Described in American journal of science, 1908, ser. 4, 26, p. 77, 
fig. 2. It is a large species, about 22 mm. in length, and seems not 
to have been particularly rare. The type is in the Peabody Museum 
of Yale University and was found at Station 14, Florissant, Colo., 
by G. N. Rohwer. None are in the collections of the Museum of 
Comparative Zoédlogy, but I have a good example, with counterpart, 
and the prothorax of another from the Wilson Ranch. 
CORYMBITES GRANULICOLLIS Wickham. 
This was described in the same article as the preceding. It is still 
larger, 24 mm. long, and is the most striking of all the Florissant 
Elateridae as far as size is concerned. The type is with the Peabody 
Museum, at Yale University. I have a very good specimen obtained 
at Florissant from a local collector who claimed to have found it in 
the railroad cut that runs through the Corixa bed. I doubt the 
accuracy of his statement. The original locality was Station 14, 
which has yielded many beautiful insects of various families. 
CORYMBITES SUBMERSUS, sp. nov. 
Plate 7, fig. 1-3. 
Form fairly elongate. Head moderately coarsely punctured on the 
front, vertex becoming only faintly sculptured. Antennae broken, 
but enough remains to show that the second joint is shorter than the 
third and, judging from the portions preserved, the organ, when com- 
plete, reached slightly beyond the points of the prothoracic hind 
angles. The antennal serrations are faint. Mandibles a little promi- 
nent. Prothorax short, narrow anteriorly, broadest across the base, 
the sides arcuate near the front angles, which are obtuse, but becoming 
nearly straight to the hind angles which are long, sharp, divergent, 
and carinate. The sculpture of the pronotum consists of an extremely 
fine punctuation, with rather sparse pubescence. There is a fine 
lateral marginal bead the full length of each side. Scutellum oblong. 
Elytra striate, the striae with fine, deep, rounded or somewhat elon- 
