434 bulletin: museum of comparative zoology. 



Described from one specimen. 



Ti/pe.— No. 2,455 M. C. Z. Florissant, Col. (No. 7,305 S. H. Scud- 

 derColl.). 



Probably not a true Cortiearia, 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 Scuddcr. 



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. Length, 

 from front margin of prothorax to elytra! tip, 5.55 mm. 



Described from one specimen. 



Type — No. 2,461 M. C. Z. Florissant, Col. (No. 2,975 S. H. Scud- 

 der Coll.). 



This beetle has something the aspect of a Brachys, but the thoracic 



