ODYNERUS. 281 



beneath ; tegulas dull yellowish, with a ferruginous stain on the 

 middle. Abdomen oblong- ovate, the basal segment dome-shaped, 

 obtusely rounded at base, without transverse suture at carina, 

 distinctly punctured, the remaining segments indistinctly so ; 

 apical margins of all the segments above narrowly yellowish, 

 almost divided on the disk by a narrow line, those of the second 

 and third segment broader and dilated on the extreme sides, 

 especially on the first segment, where there is a rather large 

 triangular mark; the bands on the remaining segments more or 

 less emarginate on each side anteriorly ; apical segment with a 

 large, broad, angular, dull yellowish mark on the middle; beneath 

 marked as above, except that the apical segment is immaculate, 

 and the second segment is almost entirely yellowish, with three 

 ferruginous spots arranged transversely near the apical margin. 



Legs deep yellowish, the femora above and at base beneath 

 pale yellowish and pale ferruginous. Wings deep yellowish- 

 hyaline,.faintly dusky at tips ; nervures honey-yellow. 



Var. This species certainly varies much into black, rufous and 

 yellow. 



Bess, a.'diff. — I do not know this species, and I can only copy 

 the good description of it given by E. T. Cresson, so that I can 

 not be perfectly sure it should be placed in this section. It is 

 very distinct b} r its enormous size, still larger than 0. dorsalis; 

 being the largest North American Odynerus. It is most likely a 

 Rhynchium, as well as 0. dorsalis. I quite agree with the 

 presumption of Mr. Cresson, that 0. consors may be its male. 



Hob. Cuba. 



86. O. consors Cresson. — Niger; puncto frontali, orbitis, clypeo, pro- 

 noto antice, tegulis, macula subalari, scutellis, nietathorace paitiiu, 

 pedibus, abdotninisque segmentorum limbo, flavidis ; abdomine fusco, 

 segmentis IP et 3° nigrescentibus ; alis ferrughie.scentibus apice griseis. 



OJgn. conaors Ckessox, Phila. Ent. Proceed. IV, 1865, 1G0. 



Total length, 7 lin. ; expanse of wing, 11 lin 



%. Head black, deeply and closely punctured; the orbits, fill- 

 ing up the sinus in front, a spot between the antennas, dilated 

 above, clypeus, labrum, and mandibles, except tips, yellow (in 

 one specimen more or less ferruginous); antennae nearly as long 



