376 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
as long again as the pronotum. Hind femora stout on basal half, 
tapering rapidly, slender on apical half, one-third longer than 
body. Hind tibiae equalling or slightly exceeding hind femora. 
Fore tibiae with two pairs of spines beneath, at the haK and a 
little short of three-fourths; middle tibiae with a single pair of 
shorter ones at about three-fourths their length. Hind femora 
with 5 to 6 short rigid spines near middle of inner lower edge; 
hind tibiae channelled above, each edge armed with several series 
of spines, 1 to 5 in number, graduated in length, longest apically, 
the inner dorsal apical spur as long as the first joint of the tarsus 
(metatarsus). Cerci long and slender, half as long as hind fe- 
mora, three-fourths as long as ovipositor, clothed with long, very 
delicate erect pubescence. Supra-anal plate of male nearly 
semicircular; subgenital plate short, rounded apically, a little 
upturned. Ovipositor equalHng or sUghtly exceeding body, 
slender, straight at base, curving gently upward in the apical 
third to an acutely pointed dorsal apex, the inner valves faintly 
crenulate on ventral side of tip. 
Ground color whitish beneath, pale brown above irregularly 
marmorate with darker brown or fuscous particularly on hinder 
edge of thoracic and abdominal segments. Fore and middle 
femora bi-annulate with dark brown at three-fifths and at tip; 
hind femora 4-annulate, the basal ring incomplete on inner side. 
Feet pale, ovipositor bright chestnut. 
Measurements. 
Body Pronotum Hind femora Antenna Cerci 0\'ipositor Palpi 
Male 16 6.5 19-21 65-95 10 13 
Female 15-18 7.5 20-23 65-95 10 11-13 13 mm. 
This species was first reported from North America (Min- 
neapolis, Minn.) by Scudder under this name, and later from 
Chicago by me as D. unicolor; it has also been recorded from 
many places in Europe by Chopard as the Tachycines asyna- 
morus of Adelung. I am informed by Hebard, who has recently 
gone into the matter, that the species should be called D. mar- 
morata though the characters stated by Brunner in his mono- 
graph point toward D. unicolor. 
This insect is a native of eastern Asia, and was probably 
introduced into this country and Europe with importations of 
