342 APPENDIX. 



Length three-tenths of an inch. 



4. C. trifasciatus. Black ; scutel, two spots on the col- 

 lar, base of the antennae and lateral spots of the tergum, 

 yellow. 



Inhabits North-west Territory. 



Body with numerous, short hairs ; hypostoma silvery ; 

 first joint of the antcnnse and middle of the mandibles, 

 yellow ; thorax punctured ; collar with two yellow spots ; 

 scutel yellow ; metathorax with dilated, confluent punc- 

 tures, and an impressed longitudinal line ; wings fuligi- 

 nous, nervures brown ; pectus with a yellow spot before 

 the wtngs ; feet yellow, thighs, and a line on the inner side 

 of the tibia^, black ; tarsi dusky at tip ; tergum polished, 

 impuncturea^j a yellow band on the middle of the second 

 segment interrupted above ; a short yellow line each side 

 of the third segment ; a yellow band on the fourth segment, 

 slightly interrupted above ; a yellow band on the fifth seg- 

 ment, not interrupted but only slightly emarginate above ; 

 venter immaculate. 



Length two-fifths of an inch nearly. 



PHILANTHUS, Fabr. Latr. 



1. V. punctatus. Black ; head and thorax with yellow 

 spots; tergum with large punctures and four yellow bands. 



Inhabits Pennsylvania. 



% Eyes very slightly emarginate ; a longitudinal line 

 each side of the hypostoma, a triangular spot on the mid- 

 dle of the anterior margin, another on the front, a small 

 rounded spot on the basal joint of the antennse before, a 

 small dot each side on the vertex, and another behind each 

 eye, yellowish-rufous ; Moraa: uneven, with large profound 

 punctures; a line on the collar, another on the scutel, be- 



