AMERICAN HYMENOPTERA. 357 



of alidoMien without cornus ; legs sparsely punctured ; tint of head 

 and thoiax greenish blue, of the abdomen steel blue, sometimes pur- 

 ple; hinder legs purple; anterior legs below knees dark ferrugi- 

 nous; femora short, hinder tibias lengthened; first joint of their tarsi 

 more thun one-half the length of the tibiae, the tarsi somewhat flattened ; 

 claws large, with a strong inner tooth, removed from the tip; wings 

 shining sub-violaceous, darkest at base and along upper margin ; second 

 brachial cell with incomplete cross nervure. 



Vur. — Most part of legs below the knees ferruginous. 



N. Y.. Kansas, Chilyunk Depot, Wash Terr.; Pac. K. 11. Survey, 

 88 X. Lat. (Smiths. Inst.). 



In some eases the second marginal cell is open at the outer end, the 

 nerves being obsolete. A specimen from Washington Territory has 

 the wings almost hyaline. 



In all the succeeding species, the punctures are as above unless other- 

 wise mentioned. 



2. TJrocerus zonatus, n. sp, 



f'vaneous, with a yellowish red baml on the fifth and sixth segments of abdo- 

 men, wings yellow hyaline. Length 0.48 — 1.00. Br. wings 0.84 — 1.76 inch. 



S . — Color steel-blue with a greenish tint on head and thorax, an- 

 tennae 19 — 21-jointed, black, the third, fourth and fifth joints rufous; 

 a yellow red band on the fifth and most of the sixth segments of abdo- 

 men, the other segments with a violet hue, the cornus dark ferruginous, 

 short, shouldered in middle, at apex suddenly compressed and acute; 

 the four anterior legs yellow red below middle of femora, blue above ; 

 posterior pair dark ferruginous, the tibise and tarsi much flattened ; 

 tibiae fluted, claws as in U. Edioardsii ; wings hyaline, all the margins 

 clouded with yellowish, nervures ferruginous ; second brachial cell with 

 incomplete cross line. 



New York, Maryland. (J. Akhurst, T. Glover.) 



Six specimens. This seems likely to be the male of U. EdicariUiL 



.".. TJ. cyaneus. 



Sirex cyanms, Fabr. Spec. Ins. i, 1731, 419, 8, J ; Mant. 258, 10; Ent. Syst. ii. 

 127, 1], 9; Syst. Piez. 50, 11. 



Sh-erjuvencas, Klug, Mon. Su. Ger. Pt. iv, fig. 1, J, Yar. iv, p. 38, fig 3. %. 

 Kirby, Faun. Bor. Am. 257, 356, 2, 9 . 



Urocerus nitidua, Harris, Inj. Ins. 1835, 3rd. Ed. 18G1, 540. 9 • 



Sirex duplex, Shuckard, Mag. Nat. Hist. i. 1837, 630. 9 % . 



Head and thorax greenish-blue: abdomen 9 cyaneus, legs yellow ferrugi- 

 nous; abdomen %, except at base, ferruginous, legs yellow ferruginous, hinder 

 tibiffi and tarsi blue black. Length, 9 0.80—1.24, with ovip. 0.92—1.44. Br. 

 wings 1.36— 1.84 inch. Length, 'J, 0.45—1.30. Br. wings 0.90— 1.90 inch. 

 9 . — Shining, antennae 18-, 19-, 20-, 22-jointed, black ; color of head 



