NORTH AMERICAN II YM EN0PTP:RA. 
147 
ceiice. the cheeks and a line beneath the te.gnlie, silvery. Thorax strono;ly punc- 
tured ; scutelluin slightly impressed mediHlly; inetanotum with a V-shaped en- 
closure, which is strongly rugose, the posterior face strongly channeled medially ; 
wings strongly fuscous, hyaline at their extreme base; first segment of the ab- 
domen about one-third longer than the second, which is strongly raised at base. 
Length .o.u— .60 inch. 
. — Differs from the 9 by having the first Joint of the flagellum slightly 
longer than the two following ones united, the apical joint as long as the three 
preceding joints together; the enclosed space on the inetanotum is strongly and 
transversely striated, and the posterior trochanters are armed with a spine. 
Length .55 inch. 
Occurs in Florida. Easily distinguished by red collar and ineta- 
notuni. 
18. Trypoxylou cariiiatuiii Say. 
T. carinatus Say, Bost. Journ. i, p. .374, % . 
%. — Front coriaceous, very flnely imnctured, slightly concave, with a medial 
impressed line, extending from lower ocellus to the angle of sharp diverging 
Carina, situated above the antenuge; the ocelli situated in slight depressions or 
pits, the pit in which the anterior ocellus is situated much more distinct; when 
seen from above the front has the appearance of being produced into a very acute 
angle ; clypeus slightly incurved medially or subtruncate; first and second joints 
of the flagellum about equal, the fourth joint beneath, at the apex, excavated, 
the apex strongly produced ; the apical joint as long as the two preceding ones 
united ; space between the eyes at the top equal to the length of the three basal 
joints of the flagellum united, beneath it is distinctly less: face, clypeus, cheeks, 
suture between collar and dorsulum, the thorax beneath and the metathorax 
posteriorly sparsely so, with silvery pubescence. Thorax finely punctured ; the 
scutelluin and postscutellum not impressed medially; metanotum trisulcate 
above, the lateral furrows oblique, on the posterior face with a deep medial chan- 
nel above with exceedingly fine, slightly oblique strise ; wings hyaline, nervures 
and stigma dark brown; outer margin of tegulse, the anterior femora in part, 
the tibige and tarsi entirely, the posterior and medial tibige at the base and the 
medial tarsi, whitish ; the greater part of the tegulge and the mandibles ferru- 
ginous. Abdomen shining, the first segment but slightly longer than the follow- 
ing one, and deeply sulcate on the basal half above, the sulcus broader and 
deeper at the base. Length .30 inch. 
(Occurs in “ Indiana” (8ay). A specimen before me without lo- 
cality. Probably from Illinois. 
19. Trypoxylou JoliiiM>iii n. sp. 
9 . — Front convex, flattened medially, without medial impressed line, sub- 
rugose, with a strong carina above the antennge; the ocelli situated in depres- 
sions, the anterior one most distinct ; clypeus incurved medially; first joint of 
the flagellum about one-fifth longer than the following joint ; space between 
the eyes at the vertex equal to the length of the second and third joints of the 
antennge united, beneath it is equal to the length of the second joint of the 
flagellum; inner orbits from the emargination of the eyes downwards, the face, 
clypeus, cheeks, suture between the collar and dorsulum, sides of thorax and the 
metathorax on the sides with silvery iiubescence ; scape anteriorly, the mandi- 
bles, the anterior femora in part, and the base of the second and third segments 
of the abdomen reddish fulvous; the tegulge, the anterior tibige and tarsi entirely, 
the base of the medial and posterior femora and the joints of the tarsi, except 
apex, whitish, the rest of the anterior and posterior legs reddish brown, the 
