[237] HYMENOPTERA 243 



Genus Limnerium Ashmead. 

 LIMNERIUM YAKUTATENSE sp. nov. 



Female. Length 6 mm. Black, finely opaquely shagreened, 

 mandibles, labrum and legs, except coxae and the first joint of hind tro- 

 chanters, rufous ; palpi and tegulse yellowish, the epitegulae white. 

 Abdomen black, with the ventral segments more or less banded or 

 spotted with white, the dorsal segments laterally more or less rufous 

 or spotted with rufous, the third segment also with a rufous band 

 at apex, usually narrowed medially and even sometimes interrupted 

 medially. Wings hyaline, the stigma and veins brown black, the 

 areolet rather large, petiolate receiving the second recurrent nervure 

 before its middle. 



Male. Very similar to female except that the rufous spots on the 

 sides of dorsal abdominal segments 3 and 4 are usually extended above 

 and unite to form a band at apex of the segments ; otherwise it is 

 practically identical with the female. 



Type. Cat. No. 5686, U. S. Nat. Museum. From Yakutat, June 

 21. Many specimens. 



This species, in color, imitates Ischnoscopus yakutatensis and could 

 be easily confused with it. 



Genus Ameloctonus Forster. 

 AMELOCTONUS POPOFENSIS sp. nov. 



Female. Length 5 mm. Black, opaque, finely coriaceous ; man- 

 dibles, palpi, tegulae, epitegulae, apices of front coxae, their trochanters 

 and the middle trochanters, yellowish-white ; coxae and first joint of 

 hind trochanters black; extreme tips of hind tibiae and their tarsi 

 fuscous ; remainder of legs ferruginous. Wings hyaline, the stigma 

 and veins brown, the areolet sessile, receiving the second recurrent 

 nervure beyond its middle. Metathorax areolated, the areola elongate, 

 narrowed and open behind. 



Type. Cat. No. 5687, U. S. Nat. Museum. From Popof Island, 

 July 10. 



Tribe PANISCINI. 



Genus Paniscus Gravenhorst. 

 PANISCUS ALASKENSIS sp. nov. 



Male. Length 10 mm. Head yellow, with purplish-brown eyes, 

 and very much as in Paniscus geminatus Say, except that the ocelli 

 are not placed on a black spot, and the lateral ocelli do not quite touch 



