HYMENOPTERA 1 79 



punctate ; palpi subfuscous ; mandibles and legs mostly rufo-testaceous, 

 a blotch on first joint of trochanters and front and middle femora 

 basally, fuscous, the hind femora, except at apex, their tibiae at apex 

 and their tarsi black ; teguls yellowish-white. Antennae 20-jointed, 

 black, the pedicel testaceous at apex ; flagellum imperceptibly thick- 

 ened towards apex, the first joint obconical, less than two-thirds the 

 length of the second, the third joint, if anything, very slightly longer 

 than the second or fully as long, joints 4 and 5 a little longer than 

 thick, 6 to last a little wider than long, the last fusiform, longer than 

 thick at base. The metathorax is completely areolated, the areola 

 hexagonal. Wings hyaline, the stigma and veins brown, the areolet 

 receiving the second recurrent nervure beyond its middle. Abdomen 

 oblong-oval, with the petiole rather long, segments 2 and 3 more or 

 less dark rufous, sometimes obfuscated or dusky across the middle, or 

 with only the sutures and basis of segments testaceous ; body of ab- 

 domen smooth and highly polished, the petiole finely shagreened. 



Male. — Length 4 mm. Black, with the legs colored as in female, 

 the abdomen with the third segment more or less dark rufous, some- 

 times wholly rufous, the second suture testaceous. Antennae 24- 

 jointed, the first and second joints of the flagellum equal or very nearly, 

 about twice as long as thick. 



Type. — Cat. No. 5586, U. S. Nat. Museum. From Sitka, June 

 16; St. Paul Island, August (Fur Seal Commission), 



BATHYMETIS SIMILLIMA sp. nov. 



(PI. X, fig. I.) 



Female. — Length 2.5 to 3 mm. Polished black and colored as in 

 P. simulans but distinguished by the antennae, which are 19-jointed, 

 not 20-jointed. 



The flagellum is obscure rufous basally, the first joint two-thirds the 

 length of the second, the third joint scarcely shorter than the second, 

 joints 5 to 10 not longer than thick. 



The abdomen is most frequently entirely black, although sometimes 

 one or two of the sutures, and the surrounding surface, or the apices 

 of one or two of the segments are testaceous ; the petiole is coriaceous 

 or finely shagreened beyond to the spiracles ; the following segments 

 are highly polished. 



Male. — Length 3.2 to 4.5 mm. Agrees fairly well with two or 

 three of the other males described here, but for the following differences : 

 The antennae are 23 -jointed, black, with the scape beneath and an 

 annulus at base of the fiagellum testaceous, the first three joints of the 



