120 Annals Entomological Society of America [Vol. V, 
Thorax not distinctly bi-nodose; uniformly and finely punctured. 
Scutellum entirely absent. Tegular tubercles very prominent. ‘‘Meta- 
thorax”? as long as mesothorax, with a definite semi-circular carina, 
behind which it is abruptly truncate. Legs not stout, concolorous with 
the thorax. 
Petiole short, about 34 as broad as the apex is long; spiracles not 
prominent; finely and uniformly punctured. Remaining abdominal 
segments very shining, with-a sparse pubescence and a very fine punctu- 
lation. Ovipositor short about 1% the length of the petiole, luteus with 
dusky sheaths. 
Observations. Described from a single 9 taken at St 
Pauls Island. This species shows a relationship to P. ash- 
meadii and P. brevistylus in the shortened form and abbreviated 
ovipositor... Type in the National Museum. 
Pezomachus longistylus sp. nov. 
Female. Length 5 mm. head and thorax ferruginous; abdominal 
segments piceous basally, yellowish apically. . Ovipositor much elon- 
gate, about 11% times the length of the petiole. 
Head from above somewhat rectangular, the margined occiput but 
little excavated; surface shagreened and of a-deep ferruginous color. 
Antennz longer than the head and thorax together, 24-jointed, slender; 
seventh and neighboring flagellar joints almost twice as long as thick; 
scape somewhat yellowish, apical third of flagellum piceous. Face 
ferruginous, rather long, malar lines distinct, about one-third as long as 
the face is wide at the lower angles of the eyes. Clypeus not very dis- 
tinctly separated, mandibles yellowish with piceous teeth; labium 
prominent, yellow. 
Thorax bi-nodose, somewhat slender, its surface evenly shagreened; 
scutellum poorly defined; ‘“‘metathorax’’ somewhat gibbose, with a 
delicate complete transverse carina. Legs elongate ferruginous. 
Abdominal petiole with prominent spiracles; width at apex about 
three times that at the base; surface finely shagreened, base ferruginous, 
apex yellowish; remainder of abdomen oval with surface finely sha- 
greened and clothed with a-sparse pubescence, all segments piceous 
basally, second segment yellow apically. On the third and following 
segments the yellow is gradually replaced by ferruginous. Ovipositor 
much elongated, almost. 11% times the length of the petiole, sheaths 
piceous black. 
Observations. . Described from a single perfect specimen in 
the National Musetim. Habitat and time of capture. not 
noted. It somewhat resembles P. micarie Howard. 
~ Pezomachus: robustus ‘sp. nov. 
Female, length 2 2mm. A robust piceous species, with short, stout 
antennz and rather thick legs, ‘“‘metathoracic” carina present but 
indefinite. No spiracular tubercles on the petiole. 
