146 
WILLIAM J. FOX. 
thorax above liiiely iniuctiired. excavated toward the truncation, a strong furrow 
extends from the apex of the excavation to the apex of inetathorax ; posterior 
trochanters armed with a spine; posterior tarsi wliitish medially; wings ful- 
vous, the ajiical margin darker. Abdomen clothed with golden pile, the first 
segment one-third longer than the second, which has the basal half reddish, 
and not raised at base. Length .52 inch. 
Occurs in Texas and INIexico. 
lb. Ti\y|M»x'yloii Sauss. PI. iii, fig. 8. 
7'. texense Sauss., Eeise d. “Novara.” Zool. ii, Hym. p. 77, ?, 1867. 
9 . —Front strongly punctured, medially impressed, with a cariiim above the 
antennae; first joint of flagellum almost twice the length of the following joint ; 
■space between the eyes at the top equal to the length of the .second and third 
joints of the antennae united, beneath it is slightly less; clypeus as in the ju-e- 
ceding species; vertex depressed medially; first five joints of the antennae, 
mandibles, tegulae, the anterior atid medial femora at apex, the coxae and tro- 
chanters at apex, tibiae, tarsi and first two segments of the abdomen, reddish 
brown; the first segment above with a brownish stain on basal portion; from 
the eye emargination downward, cheeks, sutures of the thorax, on the sides and 
beneath and the metathorax with golden pubescence. Thorax shining, finely 
punctured, the dorsulum with an impressed line on each side; metanotum with 
a V-shaped enclosure, which is finely and transversely striated, the enclosure 
open at apex, from which begins a strong sulcus, which extends to the apex of 
metathorax, the latter on the sides and posteriorly, rugose; wings golden, ner- 
vures yellowish ; legs with golden pile; first segment silicate above, on its basal 
half, about one-third longer than the following segment, which is not raised at 
base; the apical margins of segments 3-6 golden ; all the segments clothed with 
golden pile. Length .52 inch. 
. — Front very finely and closely punctured, clypeus armed with three teeth, 
the outer one acute, the medial one rounded (see fig.) ; first joint of the flagellum 
as long as the two following ones united ; scutellum with a distinct medial ini- 
juessed line; the apex of the metanotum laterally, strongly produced or cari- 
nated ; posterior trochanters armed with a spine; first and second segments of 
the abdomen about equal in length, the first at apex scarcely raised above the 
base of the second, which has a transverse impressed line before its apex. Length 
.58 inch. 
Occurs ill Texas. I may be mistaken in regard to the S of this 
species, as the specimens described herein as the S are much larger, 
and the characters so much different from those of the 9 . 
17. Tryi»o.xyloii colliiiiiin Sm. 
T. coUinum Sm., Cat. Hym. Brit. Mus. iv, p. 381, 9 t 1856. 
T. collinum Pack., Proc. Ent. Soc. Phila. vi, p. 415, 9 'E > 1867. 
9 . — Front strongly punctured, medially impressed, with a slight carinse above 
the antennse; vertex depressed medially; space between the eyes at vertex equal 
to the length of the second and third joints of the anteunse united, beneath it 
is equal to the length of the first joint of the flagellum; clypeus emarginate 
medially; first eight joints of the antenme, anterior portion of clypeus, except 
the margin, mandibles, except apex, prothorax, tegulfe, metanotum, legs and the 
first two segments of the abdomen, reddish ; face, clypeus, suture between the 
collar and dor.sulum, and the thorax beneath sparsely clothed with golden pubes- 
