OF THE COLEOPTERA LONGICORNIA OF THE UNITED STATES. 59 



Allied to the two preceding in form, and in the deep impressions of the head and pro- 

 notnin. The elytra arc sericeous, and the colour varies from yellowish rufous with a brown 

 base, to brown. Antennas yellowish rufous, and very robust; as long as the body in the 

 male, and slender and short in the female. 



215. T. .tsciLi. 



I oifori i pale fulvous, eves blackish, elytra sericeous, separated at tip, and minutely truncate. 

 5'" long; 1 i wide. Carolina, April. Boston Collection, No. 1369. 



Distinguished from dentipennis by its smaller size, more slender feet and antennae, 

 uniform colour, simple elytra, and fainter frontal and thoracic impressions. 



216. T. vestitus, Klug. 



Black, head and thorax lanate, venter and elytra testaceous, the latter entire. 6'" long; lj wide. Oregon. 

 Cab. Ls Conte. 



217. T. COARCTATOS. * 



Black, mixed with rufous; elytra very much contracted behind the middle, and divaricate at tip. 

 8'" long; 2 wide. Inhabits Pennsylvania. Rare. T. coarctatus, Dejean. Cab. Melsheimer. 

 Head rufous, scapus and vertex black; frontal line slightly impressed: prothorax subequal, blackish, slightly 

 marked with rufous anteriorly; anterior feel rufous: elytra blackish, basal third brownish rufous: pectus and 

 I feet with a few rufous spots; posterior feet black, venter rufous. 



Bears considerable resemblance to " Sapcrda cinerca," Oltv., iv. pi. 08, fig. 34. 



PACHYTA, Sen: Muls., 237. 



218. P. CORDIFERA, Oliv., iv. pi. 73, fig. 41. 



Var. lunuris. Black, yellow tomentoso ; venter dull rufous; elytra yellow, apex, and a semi-circular macula 

 behind the middle on the anterior margin, black. 6'" long; 2 wide. Inhabits Pennsylvania. July. 



Front clothed with yellow hair, frontal line impressed : prothorax much widened and bi arcuate posteriorly, 

 covered with yellow hair, and having the medial line obsolete: elytra divaricate and separately pointed at tip; 

 a minute, black spot at the basal angle, and imctimcs double) between it and the lai d macula. 



The yellow covering is sometimes wanting, when the denuded parts appear black. 



219. P. instabilis, Kin?. 



' CD 



Rol k; elytra yellow, trimaculate with black, and having a common, cordate spot between the basal 



spots, which are united to the medial ones by a black Inr. 5"' long; 2 j wide. Inhabits Oregon. Cab. Lo Conte. 



220. I', aii i \ i -v. 



Black, t red with olivaceous, prostrate hair: prothorax armed, elytra clouded with reddish-brown. 



I ng; ■:'. n 



l'i ' ' re the antennae, median line glabrous, eyes black; antenna; dull rufous; scapus 



and apes of the third, fourth, and fiflh articulations black : prothorax minutely punctured, a slight, t ian ~\ 

 groove anteriorly and posteriorly; dorsal line obsolete; an i . glabrous tubercle upon each ideofit; 



armed with a c tubercle: elytra narrowing rapidly to the apex, which is entire; sides rec- 



tilinear, surface shining, uneven, having d impressed punctures; colour reddish-brown, clouded \uth 



tomentosc spots of a paler tint; feet with a linge ofrul 



Found floating in Eagle Harbour, Kiwenaw Point, Lake Superior, by Dr. Lc Conte, to 

 whom I am indebted for the j" i imi n described. 



