196 ASHMEAD 



parapsidal furrows are distinct to beyond the middle of the mesonotum, 

 while the metathorax is shining and completely areolated. 



Type. Cat. No. 5745, U. S. Nat. Museum. From Lowe Inlet, 

 June 3. 



Genus Ilapinastes Forster. 



ILAPINASTES INCERTUS sp. nov. 



Male. Length 3.5 mm. Polished black, the face closely punctate, 

 palpi yellowish with two or three of the joints dusky medially ; teg- 

 uke, sutures of the trochanters, front and middle knees and their tibiae 

 beneath and the tibial spurs, yellowish ; rest of legs black or fuscous. 

 Wings hyaline, the stigma and veins brown, the stigma with a whitish 

 spot at base. Abdomen black, with the third segment at its extreme 

 apex and a narrow band at base, testaceous ; the petiole is punctate, 

 the second segment coriaceous, the following smooth and impunctate, 

 except that the third segment exhibits, under a strong lens, a feeble 

 punctuation towards its base. 



Type. Cat. No. 5604, U. S. Nat. Museum. From Popof Island, 

 July ii. 



Genus Isochresta Forster. 



ISOCHRESTA UNICINCTA sp. nov. 



Male. Length 3.6 mm. Polished black, the face faintly punctate 

 just beneath the insertion of the antennas and sericeous ; sutures of 

 trochanters, apices of femora, all tibiae and the front and middle tarsi, 

 yellowish ; the apex of the hind tibiae is subfuscous, their tarsi fuscous. 

 The abdomen except the third segment is black, the third segment 

 having a testaceous band across the base; the petiole is coriaceous 

 and bicarinate to beyond the spiracles. Antennae 2o-jointed, with the 

 third joint a little longer than the fourth. Metathorax finely rugulose 

 and completely areolated. 



Type. Cat. No. 5605, U. S. Nat. Museum. From St. Paul 

 Island, August 16 (Fur Seal Commission). 



Tribe PEZOMACHINI. 

 Genus Thaumatotypus Forster. 



THAUMATOTYPUS ALASKENSIS (Ashmead). 



Cremnodes alaskensis ASHMEAD, Trans. Am. Ent. Soc., xxm, p. 211, $, 

 1896. 



Type. Cat. No. 3717, U. S. Nat. Museum. From Wrangell 

 (Professor H. F. Wickham). 



