1948] 
Hardy — Neotropical Dorilaidae 
5 
and middle tibiae each with a pair of strong; apical spines 
below. All tibiae with a strong bristle on the outer side 
of the swollen portion near the middle (Fig. 3b). Wings: 
Hyaline or nearly so, stigma light brown and tilling most 
of the third costal section. Third section slightly shorter 
than the fourth. The two sections combined are longer 
than the fifth. Crossvein r-m located at the basal one- 
third of the discal cell, the last section of the fourth vein 
straight or nearly so. Abdomen: First and second terga 
chiefly grayish pollinose, remainder of dorsum polished 
black, lightly grayish on the sides. First tergum with 
one or two strong bristles on each side, remainder of 
abdomen with very sparse short hairs. Sixth tergum not 
excised on hind margin. Ovipositor : Base small, black 
and globose from a lateral view. From above the base 
is seen to be divided into two lobes by a median furrow 
extending longitudinally down the dorsum. Piercer short 
and straight about as long as the base in length and ex- 
tending to base of fourth abdominal segment (Fig. 3c). 
Length: 3.0 mm. ; wings, 4.0 mm. Male unknown. 
Holotype female : Hamburg Farm, Costa Rica, April 1 
(C. W. Dodge). One paratype female: Grenada, Grand 
Etang, Sept., 1910 (Allen and Brues). This specimen is 
headless. 
Type (M.C.Z., No. 27701) and paratype returned to the 
Museum of Comparative Zoology. 
Dorilas (Dorilas) stygius n. sp. 
(Figs. 4a-c) 
This species runs near D. spinosus n. sp. but has no 
apical spines on the tibiae or femora, the third antennal 
segment is acute below and the propleura are haired. 
Male. Head: Eyes joined for a distance slightly less 
than the length of the frontal triangle. Front and face 
gray pubescent, the former shining black on the median 
swelling. Occiput gray on sides and below, brown to 
blackish above. Labellum and third antennal segment 
yellow, palpi and first two antennal segments brown. 
Second segment with long pale bristles above and below. 
Third segment acute (Fig. 4a). Thorax: Subshining 
