61 
26. Pteronus antennatus new species. 
Female. — Length G mm.; rather robust, shining; clypetis circularly 
but shallowly notched, lobes minute; ocellar basin distinctly defined, 
sides sharply raised; frontal crest broad, rounded, unbroken; antennal 
fovea deep, circular; antenna 1 very long, slender, almost as long as 
body, joints 3 and isubequal; third cubital cell nearly twice as wide at 
apex as at base ; stigma very broad, regularly rounded beneath ; sheath 
strongly tapering toward rounded apex, nearly straight on upper mar- 
gin, with very short, inconspicuous pubescence; cerci short, spindle 
shaped; claws not deeply notched, rays subequal. Color of base of 
antenna?, more or less about ocelli, occiput, pronotum except outer 
angles, spot on anterior and lateral lobes of mesonotum, spot about 
cenchri, basal plates and base of first segment of abdomen, thorax 
beneath except centers of mesepiinera, hind femora except bases, tips 
of hind tibiae and their tarsi, brownish-black (one specimen has the 
thorax dorsally and the epimera altogether black); otherwise reddish 
ferruginous; coxa>, trochanters, bases of femora and anterior legs for 
the most part, and the mouth parts lighter yellowish; veins, including 
costa nearly to base, brown; stigma brown, paler basally; extreme 
apex of sheath brown. 
Two females. Xew Hampshire. (Coll. Am. Ent. Soc.) 
This species comes very near tricolor. 
27. Pteronus ribesii Scopoli. 
1763. Tenthredo ribesii Scopoli. Ent. Cam., p. 280. 1 
1866. Nematus ribis Walsh. Tract. Ent., I, p. 78. 
1866. Xematus ventricosus Walsh. Pract. Ent., I, pp. 117-125. 
1867. Xernatus ventricosus Norton. Trans. Am. Ent. Soc, I, p. 208. (Cat., etc., 
p. 70.) 
1867. Nematus trimaculatus Fitch. Trans. X. Y. Agr. Soc, xxvn, pp. 909-932. 
1867. Xematus trimaculatus Fitch. 12th Rept. Ins. N. Y., pp. 909-932. 
1867. Xematus ventricosus Walsh. Pract. Ent., II, pp. 67, 116. 
1869. Xematus ventricosus Walsh and Riley. Am. Ent., u, pp. 12-22. 
1869. Xematus ventricosus Saunders. Can. Ent., u, pp. 13-17. 
1869. Xematus ventricosus Walsh. Can. Ent., ir, pp. 9-12; 31-33. 
1869. Xematus ventricosfis Saunders. Can. Ent., n, pp. 47, 93, 112. 
1869. Xematus ventricosus Bowles. Can. Ent., II, p. 115 
1870. Xematus ventricosus Saunders. Can. Ent., II, pp. 146-149. 
1870. Xematus ventricosus Packard. Packard's Guide, p. 219. 
1870. Xematus ventricosus Glover. Ann. Rept. U. S. Dept. Agr., p. 77. 
1871. Xematus ventricosus Bowles. Can. Ent., in, p. 7. 
1871. Xematus ventricosus Saunders. Can. Ent., in, pp. 25-27. 
1871. Xematus ventricosus Jones. Can. Emt., in, p. 37. 
1872. Xematus ventricosus Packard. 3d Mem. Peabody Acad., pp. 1-17. 
1874. Xematus ventricosus Riley. 6th Rept. Ins. Mo., pp. 43, 149. 
' The above bibliography omits all European literature except the first description 
and the last generic reference, and also many of the shorter or less important Ameri- 
can writings. 
