156 ASHMEAD 



Genus Cratichneumon Thomson. 



This genus, not hitherto reported from North America, is repre- 

 sented in Alaska by five species, all new, distinguishable as follows : 



TABLE OF SPECIES. 



Mostly rufous or ferruginous, or at least with mesonotvun or scutel- 

 lum rufous 3 



Mostly blacky or head and thorax black. 



Abdomen mostly rufous or ferruginous 2 



Abdomen entirely black. 



Face below antennae, spot on orbits at summit of eyes, and line oppo- 

 site insertions of antennae, white ; legs ferruginous, with coxae, first 

 joint of trochanters, hind femora, and apices of their tibiae black. 

 Male C. alaskensis. 



2. Face and antennae wholly black ; abdomen at apex black, segments i to 

 3 and 4 except at apex, red ; legs black, with apices of anterior and 

 middle femora, their tibiae and tarsi and hind tibiae, except at apex, 



and their tarsi, reddish-yellow. Male C. kodiakensis. 



Face below antennae, anterior orbits, dot at summit of eyes, scape be- 

 neath, tegulae, an abbreviated line in front of them, the tibial spurs, 

 and front and middle coxae and trochanters, ivory or yellowish-white ; 

 flagellum, except above, rest of legs, except first joint of hind tro- 

 chanters and hind tarsi, which are fuscous, and abdomen, except the 

 first segment, rufous or ferruginous. Male C. yakutatensis. 



3. Mostly rufous or ferruginous 4 



Mostly black, with mesonotum, scutellum and abdomen, except first 

 segment, more or less basally, rufous, rarely with the metathorax 

 marked with rufous ; face, below antennae, scape beneath, palpi, a 

 short line on upper margin of prothorax in front tegulae, a spot vis-a- 

 vis on lower margin, front coxae and trochanters, yellowish-white. 



C. confusus. 



4. Thoracic sutures strongly marked with black. 



Metathorax entirely black ; flagellum incrassated, black, with a yellowish 

 annulus near the middle, the first three joints only a little longer than 

 thick, those beyond transverse ; legs and abdomen, except most of the 

 petiole, rufous. Female C. popofensis. 



Metathorax rufous ; face below antennae, orbits, scape beneath and 

 front coxae beneath, yellowish-white ; legs, except front trochanters, 

 middle coxae and trochanters, more or less, apices of hind coxae, first 

 , joint of their trochanters, extreme apex of their femora, tips of hind 

 tibiae and their tarsi, which are blackish or fuscous, red ; abdomen 

 entirely red. Male C fofofensis. 



