512 bulletin: museum of comparative zoology. 



the recent M. aterrimus of the Pacific states. I am not sure of the 

 antennal structure, but it looks as if the second and third joints are 

 very short and what can dimly be seen of the hind coxal plate on one 

 side has the appearance of being broad internally and much narrowed 

 to the outer edge. Of course the generic reference is subject to 

 correction in the event of more material coming to hand. 



Cryptagriotes, gen. nov. 



Body form almost like that of Cryptohypnus. Coxal plates nearly 

 linear, scarcely narrowed externally, obtusely lobed over the thighs. 

 Prosternum short with a small, subtruncate lobe, sutures nearly 

 straight, apparently excavate anteriorly. 



Type. — C. minusculus, sp. nov. 



Cryptagriotes minusculus, sp. nov. 

 Plate 4, fig. 3. 



Form moderately stout. Head large. Antennae not well pre- 

 served, slender, reaching beyond the pro thoracic hind angles. Pro- 

 thorax probably somewhat distorted, but, as preserved, wider in 

 front of the middle where the width is a little greater than the length. 

 Sides very gently arcuate, angles not well shown. Prosternal sutures 

 nearly straight, lobe rather short, entire under surface of the prothorax 

 finely punctulate and pubescent. Elytra two and one fourth times 

 the prothoracic length, conjointly rounded apically, the sides some- 

 what arcuate, sculpture not showing through. Abdomen very finely 

 punctulate and pubescent. Length, from front of head to elytral 

 ^pex, 4.00 mm.; of elytron, about 2.30 mm. 



Described from one specimen. 



Tupe.— No. 2,749 M. C. Z. Florissant, Colo. (No. 8,653 S. H. 

 Scudder Coll.). 



Judging from the form of the coxal plates, this little beetle should 

 go into the Corymbitini, possibly near x\griotes, but it does not agree 

 with any genus known to me. 



