434 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. | 
Described from one specimen. | 
Type.— No. 2,455 M. C. Z. Florissant, Col. (No. 7,305 S. H. Seud- | 
der Coll.). | 
Probably not a true Corticaria, but having the form of that genus | 
it will be sought for in this place. There is no evidence of hairs, even | 
under high power. The large size will separate it from similar | 
Florissant species. | 
BYRRHIDAE. | 
NOSOTETOCUS VESPERTINUS Scudder. | 
One specimen, with counterpart, No. 2,456, 2,457 M. C. Z. (No. 
8,196 and 9,054 S. H. Scudder Coll.). 
NOSOTETOCUS DEBILIS Scudder. 
| 
Two specimens, No. 2,458, 2,459 M. C. Z. (No. 7,687, 11,246 S. H, 
Scudder Coll.). 
BYRRHUS ROMINGERI Scudder. 
One specimen, No. 2,460 M. C. Z. (No. 6,389 S. H. Scudder Coll.). | 
CHELONARIUM MONTANUM, sp. nov. 
Plate 2, fig. 5. | 
Form roughly elliptical. Head projecting slightly beyond the an- 
terior prothoracic margin but showing no characters of interest. | 
Pronotum subtriangular, very broad at the base which is lobed at | | 
middle and sinuate laterally, apex rounded, sides strongly convergent — 
anteriorly. Along the basal margin is a series of strong punctures | 
giving a crimped effect. Elytra broader behind the humeri, rapidly _ 
narrowing posteriorly, rounded at apex. Legs wanting. Lange | 
from front margin of prothorax to elytral tip, 5.55 mm. 
Described from one specimen. 
Type.— No. 2,461 M.C. Z. Florissant, Col. (No. 2,975 S. H. Seud- 
der Coll.). 
This beetle has something the aspect of a Brachys, but the thoracic | 
