112 AMERICAN ENTOMOLOGY. 



antenna? and mandibles rufous, black at tip ; base of the head 

 rufous : thorax, first segment and scutel, each with a yellow line : 

 a large rufous spot each side behind the scutel : superior 

 wings with a dusky margin towards the tip : costal nervure dull 

 rufous in the middle ; radial cellule rounded at tip, and at its 

 inferior edge descending in an angle to meet the superior angle 

 of the second cubital cellule, which is triangular: tergum with 

 an obsolete transverse groove on the middle of each segment, and 

 a marginal slender one : posterior submargins yellow : feet rufous; 

 pectus black : venter dull rufous. 



Obs. The specimen which served for this description is a male, 

 which was taken in the same country as the preceding. It cor- 

 responds with the canaliculatus in the simple form of its eyes 

 and mandibles, and in the shape of the radial and second cubital 

 cellules. These characters justify the separation of the two spe- 

 cies from the foregoing, into a distinct subgenus. 



The lower left figure of the plate. 



Philanthus vertilabris. — Specific character. Black : 

 thorax with a line on the interior and posterior margins, and ter- 

 gum, with four or five bands of which the anterior one is broadest, 

 yellow. 



P. vertilabris Fabr. Syst. Piez. p. 308. Coqueb. 111. Icon. p. 

 96, pi. 22, fig. 2. 



Desc. Head black ; beneath the antenna? yellow ; antennae be- 

 neath yellow : thorax with confluent punctures black j a trans- 

 verse line before and another behind yellow : wings tinged with 

 dull yellowish : feet pale rufous : tibia? yellowish on the exterior 

 side : tergum with large, deeply impressed, confluent punctures ; 

 first segment with a yellow spot each side , second segment with 

 a broad yellow band occupying the basal half, sometimes slightly 

 interrupted in the middle j third, fourth, and fifth segments with 

 a band on their hind margins, broader each side ; sixth segment 

 with a spot each side. 



Obs. Coquebert gave a figure of this species, with a magnified 

 representation of the head, abdomen, and a wing. It is stated to 

 be an inhabitant of Carolina, but it is also found in Missouri and 

 Pennsylvania. 



The upper left figure of the plate. 



