748 BOSTON JOURNAL 



3. M. COLLARIS. — Collar with an interrupted band and two 

 spots yellow. 



Inhabits Indiana. 



Body black : head with two spots above the antennae, frontal 

 orbits, and dilated line behind the eyes, yellow : mandibles dark 

 pieeous, black at tip : collar with an interrupted band on the 

 posterior margin and two spots before yellow : thorax with a 

 small yellow spot above the wings : wing-scale dull honey-yellow 

 with a yellow spot : wings yellowish, fuliginous, dusky on the 

 costal margin towards the tip ; behind the scutel is a transverse 

 [363] yellow line : metathorax somewhat sericeous, without any 

 appearance of rugae, and with two yellow longitudinal spots : ter- 

 gum with a somewhat varied reflection; first and second seg- 

 ments with a lateral yellow spot, (those of the former probably, 

 in some specimens, obsoletely connected) ; third and fourth seg- 

 ments with a lateral basal yellow spot, connected by a slender 

 line ; fifth segment with an obsolete yellow lateral spot : pleura 

 with a yellow spot under the anterior wings : feet, anterior knees 

 and tibial dilated line yellow; intermediate and posterior tibiae 

 and all the tarsi ferruginous : anal segment above minutely line- 

 ated, and at tip, dull ferruginous. 



Length over three-fifths of an inch. 



This species is larger than costata nob., which it much resem- 

 bles, but may be distinguished by the sericeous appearance of 

 the metathorax and the absolute destitution of rugae on that part ; 

 in the costata also, the lateral spots of the metathorax are double. 



SCOLIA Fabr. 



1. S. EPHiPPiUM. — Black ; tergum bifasciate with fulvous. 



Inhabits Mexico. 



Body black : wings dark violaceous ; cubital cellules two, the 

 second receiving two recurrent nervures, and with an abbreviated 

 nervure proceeding from its base towards the tip of the wing : 

 tergum violaceous-black ; second and third segments fulvous, 

 with a narrow basal and terminal black margin ; beneath black : 

 venter slightly tinged with violaceous : thighs not remarkably 

 robust. 



Length % over one inch and one tenth. 



A large and fine species. [364] 



[Vol. I. 



