61 
26. Pteronus antennatus new species. 
Female.—Length 6 mm.; rather robust, shining; clypeus circularly 
but shallowly notched, lobes minute; ocellar basin distinctly defined, 
sides sharply raised; frontal crest broad, rounded, unbroken; antennal 
fovea deep, circular; antennie very long, slender, almost as long as 
body, joints 3 and 4 subequal; 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 
antenne, 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 mesepimera, hind femora except bases, tips 
of hind tibie and their tarsi, brownish-black (one specimen has the 
thorax dorsally and the epimera altogether black); otherwise reddish 
ferruginous; coxie, 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. New Hampshire. (Coll. Am. Ent. Soc.) 
This species comes very near tricolor. 
—_— ‘ 
— 27. Pteronus ribesii Scopoli. 
1763. Tenthredo ribesii Scopoli. Ent. Carn., p. 280.! 
1866. Nematus ribis Walsh. Pract. Ent., 1, p. 78. 
1866. Nematus ventricosus Walsh. Pract. Ent., 1, pp. 117-125. 
1867. Nematus ventricosus Norton. Trans. Am. Ent. Soc., 1, p. 208. (Cat., ete., 
p. 70.) 
1867. Nematus trimaculatus Fitch. Trans. N. Y. Agr. Soc., XX VU, pp. 909-932. 
1867. Nematus trimaculatus Fitch. 12th Rept. Ins. N. Y., pp. 909-982. 
1867. Nematus ventricosus Walsh. Pract. Ent., 11, pp. 67, 116. 
1869. Nematus ventricosus Walsh and Riley. Am. Ent., 1, pp. 12-22. 
1869. Nematus ventricosus Saunders, Can. Ent., 1, pp. 13-17. 
1869. Nematus ventricosus Walsh. Can. Ent., 1, pp. 9-12; 31-33. 
1869. Nematus ventricosus Saunders. Can. Ent., U1, pp. 47, 93, 112. 
1869. Nematus ventricosus Bowles. Can. Ent., 11, p. 115. 
1870. Nematus ventricosus Saunders. Can. Ent., 0, pp. 146-149. 
1870. Nematus ventricosus Packard. Packard’s Guide, p. 219. 
1870. Nematus ventricosus Glover. Ann. Rept. U.S. Dept. Agr., p. 77. 
1871. Nematus ventricosus Bowles. Can. Ent., 11, p. 7. 
1871. Nematus ventricosus Saunders. Can. Ent., lil, pp. 25-27. 
1871. Nematus ventricosus Jones. Can. Emt., U1, p. 37. 
1872. Nematus ventricosus Packard. 3d Mem. Peabody Acad., pp. 1-17. 
1874. Nematus 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. 
