May, 1846.] 59 



punctures: elytra elongate, with sides almost parallel; punctate-striate, the 

 striae and punctures very fine; interstices convex, punctulate and rugulose : 

 beneath and feet dark chestnut-red, glossy; tarsi testaceous. May be placed 

 in the new genus Cteniopus, Solier. 



Mycetocharus, Latr. 



1. M. niger. Black above ; feet rufous. 2} 1. long. Pennsylvania. 

 Cistela nigra, Melsh. Catal. 



Black above, slightly pubescent, rather glossy: head densely punctulate; 



palpi : antennae reddish brown, with two basal joints paler: thorax 



punctured, punctures not dense, rather shallow : elytra punctate-striate, with 

 the striae obtuse and the punctures minute, the interstices transversely rugose : 

 beneath chestnut-red ; feet rufous. 



2. M. ruficornis. Fuscous; antenna, palpi, feet and base of the elytra 

 testaceous. 2 1. long. Pennsylvania. 



Cistela axillaris, Melsh. Catal. 



Brown, pubescent, densely punctulate; antennas, labrum, palpi and feet 

 testaceous ; thorax at base each side of middle with a small and profound 

 impression; dorsal impression obsolete: scutel brown: elytra densely rugulose; 

 towards the suture with faint traces of the interstices ; base broadly and 

 indeterminately testaceous : beneath pale brown: femorarather pale testaceous. 

 This species is distinct from the fraterna, Say, which is not. as Say states, the 

 axillaris of M. Catal. i 



Cistela, Fabr. 



1. C.fuliginosa. Dark fuscous ; antennas and tarsi dull rufous. 5-6 1. long ; 

 1^-2| 1. wide. Pennsylvania. 



Cistela fuliginosa, Melsh. Catal. 



Dark brown or blackish, finely ashy-pubescent ; head densely punctulate, 

 with the frontal suture distinct; clypeus and labrum dull rufo-piceous ; palpi 

 dark piceous ; antennae dull dark rufous, long, slender in the J very slightly 

 serrate: thorax with the outlines as is common ; very finely rugose-punctured 

 punctures confluent; basal margin each side of the middle with a slide 

 impression; transversely and obsoletely indented in front of the scutellum- 

 sides befpre the hind angles slightly indented ; 9 with numerous small, obsolete 

 impressions on the disk, and a large one each side behind the anterior angles : 

 scutellum finely and densely punctured ; elytra punctate-striate, striae profound 

 with the punctures minute, the insterstices convex, wrinkled, and numerously 

 and minutely punctured : beneath somewhat piceous ; tarsi color of the antennas. 



C. punctulata. Black, strongly punctured ; palpi and tarsi rufous. 4J 1. long ; 

 2 1. wide. Pennsylvania. 



Cistela picipes, Melsh. Catal. 



Black, clothed with a fine but not dense ashy-pubescence ; head with large, 

 profound and rather distant punctures ; frontal suture very distinct and 

 profound ; clypeus at tip, and labrum dull rufo-piceous ; palpi yellowish- 

 rufous ; antennae long, slender, dull reddish-brown: thorax punctured as the 

 head, with the punctures rather larger, deeper, and less vicinal ; the ordinary 



