[149] HYMENOPTERA 155 



the hind tibiae at apex, all tarsi, except the last three joints of hind 

 tarsi, and abdominal segments 2, 3 and 4, except a lateral streak on the 

 second basally, a band at base of second and third, yellow. There is 

 also a narrow tranverse yellow line at the apex of the fifth abdominal 

 segment. Wings subhyaline, the stigma and veins, except the sub- 

 costal vein at its apical two thirds, brown. The head and thorax are 

 distinctly, rather closely punctate, the clypeus very sparsely punctate, 

 the mesopleura beyond the discal impression and a spot near the upper 

 angles of the metapleura alone smooth and impunctate. The meta- 

 thorax is rugulose, the areola being large, quadrate, the lateral basal 

 and median areas being confluent. The hind coxae are strongly 

 punctate, the front and middle coxae less strongly punctate. Wings 

 with the venation normal, the submedian cell longer than the median, 

 the disco-cubital nervure not broken by a distinct stump of a vein, the 

 areolet pentagonal, but with the sides strongly convergent above, the 

 transverse cubiti almost meeting. The abdomen is about twice as long 

 as the head and thorax united, the petiole rugulose at apical third, seg- 

 ments 2 to 4 rugulosely punctate, the fourth less distinctly at apex, the 

 following segments nearly smooth, at most alutaceously sculptured and 

 finely, sparsely punctate ; gastrocoeli broad and deep with striae at 

 bottom. 



Type. Cat. No. 5533, U. S. Nat. Museum. From Unalaska, July 

 17. One specimen. 



Genus Ichneumon Linne 1 . 



TABLE OF SPECIES. 



Body mostly black, or head and thorax black 2. 



Body mostly rufous, or ferruginous, or thorax never entirely black. 10. 



2. Abdomen not entirely black 4. 



Abdomen entirely black. 



Face below antennae ivory white 3. 



Face entirely black. 



Legs, except hind tarsi, red /. imitator. 



3. Scutellum and postscutellum yellow ; scape beneath yellowish or 

 whitish ; legs red ; coxae and trochanters, except more or less of 

 the first joint of front and middle pairs, black; anterior tibiae 

 and tarsi paler, yellowish or brownish-yellow ; tips of hind tibiae 



and more or less of their tarsi, fuscous /. sitkensis. 



Scutellum with yellow spot at apex ; postscutellum and scape be- 

 neath black ; legs red, but with the coxae, except a white spot on 

 front pair beneath, trochanters, front femora beneath, middle 



