HYMENOPTERA 1 77 



24. All cox£E red or pale, never black 25. 



All coxaj black. 



Antennse 22-jointed. Female. 



None in this section known from Alaska. 

 Antennae 20-jointed. Female B. bicolor. 



25. To this section belong Phygadenon californicus Cr., P. 

 crassipes Prov. and P. vulgaris Cr. 



26. None in this section are found in Alaska. 



BATHYMETIS NIGRICORNIS sp. nov. 



Female. — Length 3.5 mm. ; ovipositor a little longer than the 

 petiole. Polished black, the face sparsely punctate, the metathorax 

 finely wrinkled and completely areolated ; mandibles, except teeth, 

 sutures of trochanters, knees and tibite, except the apex of the hind 

 tibice, dark rufo-testaceous, the tarsi mostly fuscous, the anterior and 

 middle tarsi with the apices of joints and beneath usually testaceous, 

 rarely wholly testaceous ; tegulae and tibial spurs yellowish-white. 

 Wings hyaline, the stigma and veins dark brown. Head quadrate, 

 the temples full, broader than the eyes. Antennae 20-jointed, slightly 

 thickened toward the apex, the second and third joints of the flagellum 

 subequal, about one-half longer than the first, the joints beyond, to the 

 last, shorter joints 5 and 6 quadrate or nearly so, the following to the 

 last a little wider than long, the last oblong, a little more than twice 

 longer than thick. 



Male. — Length 5 mm. Agrees well with the female except in the 

 usual sexual differences. The head is subquadrate, the abdomen longer, 

 clavate, one-third longer than the head and thorax united, the petiole 

 finely rugulose, longitudinally aciculated at sides, while the antennae 

 are 24-jointed, the flagellum being filiform, the first and second joints 

 of same subequal in length, or at most, with the first very slightly the 

 longer. 



73;^^._Cat. No. 5582, U. S. Nat. Museum. From St. Paul Is- 

 land (Fur Seal Commission). 



BATHYMETIS IMITATOR sp. nov. 



Pemale. — Length 2.8 to 3 mm. ; ovipositor not longer than the 

 petiole. Polished black, the base below the antennte sparsely punc- 

 tate, the space above flat or depressed and smooth ; legs black, with the 

 apices of front coxa?, their femora, except slightly basally above, their 

 tibiae and tarsi, second joint of middle and hind trochanters, apices of 

 their femora, middle tibial and tarsi and the hind tibiae, except at apex. 



