360 EDWARD NORTON. 



obscure, nervures yellowish, second brachial cell with an incomplete 

 cross nervure. 



New York, (J. Akhurst), 4 9 , 3 S . California, (Coll. Am. Ent. 

 Soc). 



The males were taken in the same locality with the females. They 

 are almost precisely like the males of U. cyaneua. The cornus in this 

 is shorter, the hinder femora blue or blackish and the wing cells agree 

 with those of the female. Except in the color of the abdomen, they 

 are also much like U. zonatm. Specimens vary much in size. 



h. — Apical cornus of female constricted at base, spear-shaped. 



6. TJ. albicornis. 



Sirex albicornis, Fabr. spec. Ins. i, 1781, 419,9, 9= Mant, Ins. 258,2; Ent. 

 Syst. ii, 127, 12, 9; Syst. Piez. 51, 12. 



Urocerus albicornis, Harris, Inj. Ins. 2nd. Ed. 427. Fitch, Nox. Ins. iv, 45, 252. 

 Black, with a spot on each side of the head and a band on the antennse and 

 legs, white. Length 9 0.72— 1.04, with ovip. 0.92—1.44. Br. wings 1.30— 1.96 

 inch. 



9 . — Shining black ; antennae 21-, 22-, 23-jointed, the three or 

 four basal joints and from 3 — 5 apical joints black or ferruginous, 

 remainder white; first joint longer than third ; head more polished 

 behind eyes than U. Edwardsii, sides of abdomen somewhat polished, 

 apical segment shining, punctured beneath, legs pitted ; cornus long, 

 much constricted at base, spear shaped, serrate; ovipositor not as long 

 as abdomen and cornus combined ; a large oval spot on each side of 

 head, back of eyes, a small round spot on each side of 7th segment of 

 abdomen and a band on the apical half of all the tibiae and tarsi yellow 

 white; a rufous spot at base of ovipositor ; wings violaceous, obscure, 

 darkest on costal margin, second brachial cell without cross nervure. 



Var. CALiFORNicus — 9 . A faint red spot on the side of seventh 

 segment; wings smoky-yellow. 



Xew England, N. Y., N. W. T., Lake Winnipeg, Chilyunk Dep. 

 Wash. Terr. (Smiths. Inst.). England. 



Dr. Harris states that the male has a black head, with a white spot 

 on each side behind the eyes ; thorax and legs black ; abdomen flattened 

 and rust colored and ends with a flattened horny point. 



A specimen from Louisiana agrees with this description, the abdo- 

 men being entirely rust colored. The antennte are 22-jointed, the first 

 twelve joints blackish, remainder white ; a white spot behind the eyes 

 and an indistinct spot on the shoulders. Legs as in U. abdominali's ; 

 wings the color of those of female, equally distributed, except the first 

 brachial cell, which is clearer. Eound on the pine in July. This is 



