452 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Described from one specimen. 
Type.— No. 2,526 M. C. Z. Florissant; Col. (No. 7,646 Seam 
Scudder Coll.). 
Probably not a true Oligomerus since the head is larger and the 
prothorax shorter and higher than in the modern species. For the 
present, I prefer to leave it here rather than erect a new genus for its 
reception. 
ANOBIUM DURESCENS Scudder. 
I have referred to this species a specimen, No. 2,527 M. C. Z. (No. 
12,026 S. H. Seudder Coll.). It differs from the type in being 1 mm. 
longer, (length 4.50 mm., as compared with 3.50 mm. in the original), 
but I can find no other tangible difference. 
BOSTRICHIDAE. 
AMPHICERUS SUBLAEVIS, sp. nov. 
Plate 6, fig. 4. 
Form stout. Head large. Prothorax, in side view, subcuneiform, 
the back not much arched, surface comparatively smooth and without 
defined asperities. Elytron a little more than twice the prothoracie 
length, faintly substriate, otherwise nearly smooth, without teeth on 
the declivity. The only leg showing is one of the hind pair, which is 
very small and relatively weak. Length, from front of pronotum to 
apex of elytra, 5.85 mm. | 
Described from one specimen. 
Type.— No. 2,524 M. C. Z. Florissant, Col. (No. 14,250 S. HL 
Scudder Coll.). 
This is a little larger than Xylobiops lacustre and is much smoother. 
The fossil Dinoderus cuneicollis is much smaller. I have placed it in — 
Amphicerus in spite of the lack of prothoracic armature because of 
the general likeness to the New Mexican <A. brevicollis, which, judging 
from material received from Prof. D. E. Merrill, is the female of 4. 
grandicollis. 
XYLOBIOPS LACUSTRE Wickham. 
One specimen, No. 2,525 M. C. Z. (No. 14,247 S. H. Scudder Coll.). © 
