248 C. T. BRUES, 
two colors straight transverse. Anterior half of thorax yellow, its 
lateral wrinkles ferruginous. Dorsal stripe of abdomen brownish, nearly 
half as wide as the body, at base narrowed and faded out posteriorly. 
Genital pores on median line near posterior margin, distinct. 
Host, Polistes rubiginosus St. Fare. 
Described from one female and four male specimens, collected and 
bred at Austin, Texas, during October, 1901. 
Xenos peckii Kırsy (Fig. B, a; Fig. C). 
Male. Length 3—4.5 mm. Dark fuscous, abdomen usually lighter 
and pale at apex. Mandibles black at base, pale at tips, antennae 
yellowish gray, the rami of the third joint about one and one-third as 
long as the width of the 
head. Head fuscous. 
Palpi indistinctly two- 
jointed, the second joint 
only one-half as long as 
the first and not separ- 
ated from it ventrally, 
so that the palpus ap- 
pears to be obliquely 
cleft, the first joint being 
obliquely truncate at 
apex. Dorsum of thorax 
varying from fuscous to 
piceous, darkest medially, 
elytra gray. Abdomen 
usually yellowish gray 
above, often darker; ven- 
tral surface honey yellow; 
sexual organs pale yellow. 
Wings stout, subhyaline, 
the veins very strong and 
dark, the wing being 
Fig. C. Head of Xenos peckii KIRBY 9. fuscous along the mar- 
gins of the veins, so that 
they appear rather widecapital. Subcostal nervure interrupted slightly 
before the middle; costal margin infuscated on basal two-thirds. Legs 
grayish luteous, darkened on upper side of femora and tibiae and espe- 
cially so on the tarsi. 
Female. Length 6.25—9 mm. Head above orange, irregularly 
blackened on posterior half. The black portion emarginate in front at 
the middle and not extending so far forward on the sides, so that the 
black extends forward as a projection on each side of the middle. 
Anterior half of thorax fuscous or piceous, with black wrinkles on the 
