long's second expedition. !_'■> 



Head with short cinereous hair, somewhat longer about the 

 mouth ; densely punctured; thorax and scutel densely punctured, 

 and with scattered, cinereous short hair; posterior segmenl of the 

 former, with two light parallel impressed lines; wings hyaline, 

 nervures fuscous; metathorax with a longitudinal, impres 

 very distinct line ; and a transverse one at base ; hair more ob- 

 vious each side; punctures smaller than those of the thorax ; 

 domen more hairy than any other part of the t ody. 



Length three-tenths of an inch. 



This insect also occurred on the Missouri, at Engineer Can- 

 tonment, and in Pennsylvania. 



TIPHIA Fabr. 



1. T. INORNATA. — Black, immaculate; wings yellowish fuli- 

 ginous. 



Inhabits Ohio and Pennsylvania. 



Head punctured ; antennae piceous, paler towards the tip ; 

 mandibles piceous, blackish at tip; thorax punctured, wing-scale 

 and posterior margin of the first segment impunctured, edge of 

 the latter piceous ; metathorax with three longitudinal, slightly 

 elevated lines; posterior edge also slightly elevated into an acute 

 line ; feet hairy, tibiae and tarsi more or less piceous ; abdoi 

 particularly behind hairy. 



Length three-fifths of an inch. [332] 



2. T. interrupta. — Black, stethidium with yellow - 

 tevgum with yellow spots and bands. 



Inhabits Pennsylvania. 



Antennae dull black-brown, first joint polished, piceous at tip; 

 mandibles piceous, black at tip; thorax with a spot each sid< 

 fore, three in a line between the origin of the superior wings, yel- 

 low; scutel with a yellow, transverse line; wings hyaline, costal 

 margin fuliginous; metathorax at the tip each side with a do 

 longitudinal, yellow spot; pleura with a vertical, yellow, obi 

 spot beneath the origin of the superior wing; tarsi pale pici 

 tibiae, anterior pair blackish-piceous, posterior pairs pale pice. - . 

 thighs black ; tergum a little iridescent; first segment with a 

 band abruptly and widely narrowed above; second segment with 

 an oval spot each sidej third segment, band gradually nam 



