346 APPENDIX. 



consisting of the larvaeof someof the nocturnal Lepidoptera. 

 Early in July or towards the middle of that month, the 

 perfect insect makes its way through the side of its dwel- 

 ling. The form of the first segment of the abdomen of our 

 species, is similar to that of Schaeffer's r^resentation of 

 his Vespa nona, (Icon. vol. 1, pi. 53, fig. 10,) which is 

 proportionally much smaller than in Degecr's figure of the 

 coarctata. This species is found as well in Pennsylvania, 

 as in the North-west Territory and Missouri. 



2. E. verticalis. Black ; hypostoma above, anterior tho- 

 racic margin, scutellar line, posterior submargins of the 

 abdominal segments, and spot each side on the first and se- 

 cond segments, yellow ; metathorax with a vertical spot 

 each side at tip. 



Inhabits Pennsylvania, 



This species differs from the preceding in the following 

 characters ; anterior portion of the hypostoma with a deeply 

 trilobated black spot ; superior wing-scale rufous j a small 

 yellowish spot beneath the superior wing and a yellowish 

 line over the insertion of the inferior wing ; a vertical, ob- 

 long, yellow spot each side near the inferior tip of the me- 

 tathorax ; a small spot each side on the first segment of the 

 tergum, and the yellow margin is reflected backwards on 

 the lateral edge for a short distance ; the spot of the second 

 segment is elongated, and the bands of the third and fourth 

 segments pass round the venter. Size about equal to the 

 preceding, and seems to be allied to the ^^owi^ybrwiw, Fabr. 



3. E. anormis, Black ; first abdominal segment very 

 short and dilated. 



Inhabits St. Peter's river and Arkansa. 



% t^ntennae with the scapus yellow before ; hypostovia 

 attenuated, truncate at tip, with large, longitudinal punc- 

 tures, and at base a transverse, yellow, arcuated line ; a 



