o46 EDWARD NORTON. 



thorax witli a pale membranaceous, triangular spot behind ; abdomen 

 on the middle with a transverse oval, pale yellow spot on each side," 

 on fourth segment. 



■' Var a. — Head immaculate." 



" Var h. — A very small indistinct spot on each side beyond the 

 middle " 



Ct., Penn., N. Y., Mass., Fla. 



In the specimens examined, I find a dot (in one case two dots) on 

 each side at summit of orbit within and an oval dot on inner orbits 

 below antennae. In a specimen from Florida, two oval dots below an- 

 tennse. The apical joint of labial palpi is long and large, pear shaped. 



The apical joint of maxillary palpi, as in all the succeeding species,- 

 is inserted on the side, near the middle of preceding joint. First mar- 

 ginal cell one-half widest at stigma. Lanceolate cell of under wing 

 about one-half the length of brachial cell above. A single male has the 

 antenriEe quite short, an oval white spot ou the side of third segment 

 and a more slender one at apex on each side of fifth. The anterior tibiae 

 and the basal third of intermediate pair are white ; wings of different 

 specimens vary from subhyaline with clouded tips to obscure blackish. 



2. — Antcnnoe filiform, scarcely clavate. 



3. P. integer. 



Cephus integer, Harris Catalogue, 9 • Norton, Bost. Proc. viii, 1861, 224, 2, 9 S • 

 Cephus flicornis, Harris Catalogue, % . 



Black; collar white ; a rufous band on abdomen. Length 0.32. Br. wings, 

 0.62 inch. 



9 . — Shining black; antennas (28-jointed as long as to 2nd segment 

 of tergum), black, filiform; mandibles and palpi yellow, the former 

 strongly bidentate, with a small inner tooth between; tegulae, wide 

 edge of collar connecting tegulae and lower edge of metathorax white ; 

 the three basal segments of abdomen rufous ; legs pale rufous ; posteri- 

 or tibia3 and tarsi blackish, basal third of the tibise white, claws bifid; 

 wings hyaline, a fuscous spot beneath stigma on its marginal cell; costa 

 yellowish ; first marginal cell shorter than wide, both the nervures re- 

 ceived in stigma. Lanceolate cell of underwing nearly as long as that 

 above. 



Massachusetts, New York. 



4. P. bimaoulatus, n. sj), 



Black, the four basal segments of tergum venter and legs, yellow red; wings 

 clear with two black apical spots. Length 0.37 inch; br. wings 0.65 inch. 



9 . — Antennae filiform, about 24-jointed, joints beyond the fifth as 

 wide as long. Head and thorax polished, the latter delicately punc- 

 tured. Head slightly concave behind. Final joint of maxillary palpi 



