May, 1846.] 55 



2. N. dorsalis. Pale testaceous, with a spot on the vertex, a dorsal band, and 

 two elytral vittse, fuscous. 4| 5 1. long ; 1^ 1. wide. Carolina? 



Pale testaceous, clothed with a very fine ashy down, very minutely sha- 

 greened : head with a brownish band in the face ( $ ), or only obvious on the 

 vertex (<^) ; antennae and palpi testaceous, the former with the two terminal 

 joints equal, both together about as long as the tenth (J^); eyes large, deep black , 

 emarginate at the base of the antenna? ; thorax, as is common, widest before, 

 with the sides slightly sinuate or retuse in the middle ; each side of the middle 

 with two roundish impressions, placed quadrangularly, obvious in the <^, less so 

 in the $ ; a brownish entire dorsal band ; sides in the middle obsoletely brown : 

 elytra slightly narrowed behind, each with two longitudinal brownish bands, 

 confluent before the apex : beneath and feet color of above, or in a $ specimen 

 with the three terminal segments brownish. 



Xylophilus, Latr. 



X.fasciatus. Black ; antenna?, palpi, feet, and base and apex of the elytra, 

 testaceous. 1 1. long. Pennsylvania. 



Black, ashy-pubescent : head minutely punctured, with the mouth dull tes- 

 taceous ; antennae and palpi testaceous ; the former as long as the thorax, slightly 

 thickened towards the apex, with the second and third joints subequal in length, 

 the second rather more robust than the third ; maxillary palpi with the terminal 

 joint large, securiform: thorax not wider than the head, suborbiculate, with the 

 sides parallel ; more coarsely punctured than the head ; medial line obsolete : 

 scutellum black, coarsely punctured : elytra wider than the thorax, punctured, 

 punctures large, profound, vicinal, testaceous-yellow, with a common, broad, 

 blue-black fascia in the middle ; scutellar region dusky ; feet testaceous : abdo- 

 men piceous : pectus black, rough with large punctures : posterior femora 

 rather clavate. 



Melandryidce, Leach. 



Mklandrya, Fabr. 



"Black ; thorax with grooves ; front with an impressed dot ; elytra striate 

 and punctured." Melandrya striata, Say, Narrative of an Expert. App. p. 286. 



Var. a. Sculptured as in the preceding, dull rufous, with the eyes and elytra 

 black ; palpi and tarsi testaceous ; tibise testaceous-yellow ; body beneath and 

 femora, like the thorax, dark dull rufous. Serropa/pus thoracicus. Melsh. 

 Catal. 



Var. b. Sculptured as in the type, with the frontal impression slight, almost 

 obsolete ; black above, beneath and femora chestnut-brown ; tibia?, tarsi and 

 palpi testaceous, the two former tinged with rufous. 4^ 1. long ; 1^ 1. wide 

 or only about half as large as the type, or preceding variety. It is Serropalpus 

 bicolor, Melsh. Catal. 



1. M. ? umbrina. Fuscous, ashy-pubescent ; antenna? and feet rufous. 5 1. 

 long ; 1^ 1. wide. Pennsylvania. 



Serropalpus umbrinus, Melsh. Catal. 



Elliptic, brown, densely ashy-pubescent, finely and densely punctured : head 

 with the clypeus broad, obtusely rounded and glabrous at tip ; labrum trans- 

 verse, almost covered by the clypeus ; each side between the antenna? with an 



