18 PROCEEDIXGS OF THE NATIONAL, MUSEUM. vol. 64 



angle high and flange-like, longitudinal impression strong; propo- 

 deum smooth, spiracle small, broadly oval, carinae high, areola 

 complete, triangular, much longer than wide at apex, basal area 

 also defined, triangular, costulae and costellae entirely wanting, 

 petiolar area divided by three longitudinal ridges; legs as in Opheltes 

 except femora are a little stouter; areolet oblique trapezoidal; second 

 discoidal cell nearly as wide at base as is brachial at apex; nervellus 

 broken at about upper fourth. Abdomen hardly falcate ; first tergite 

 with spiracles at middle, with distinct dorso-lateral carinae to 

 spiracles, and a distinct median groove from near base to near apex; 

 second and thhd tergites little longer than wide at apex. 



Dull ferruginous with flagellum and abdomen beyond third seg- 

 ment black; sheath ferruginous; legs testaceous, hind tarsus and apex 

 of tibia darker; wings yellow with apices infumate. 



Male. — Differs from female practically only in having the temples 

 slightly narrower and notauli more distinct. 



Type-locality. — Gifu, Japan. 



Type.— Cat. No. 25980, U.S.N.M. 



One female and one male collected by Y. Nawa, and bearing his 

 number 59. 



dc 



Fig. 7.— brachial cell of absyrtus: b. basal vein; br. brachius; d. discoideus; dc. discocubitus 

 m. MEDius; n. nervulus; pn. postnervulus; sd. subdiscoideus; sm. submedius. 



Genus ABSYRTUS Holmgren. 



The closest relative of this genus is Alexeter Foerster, from which 

 it differs practically only in having the claws strongly pectinate, 

 the brachial vein angulate (see fig. 7), and the ocelli larger. In the 

 last character it differs hardly at all from certain species of Alexeter 

 that are probably of crepuscular habits. 



Three North American species are known to me. They may be 

 distinguished by the following key: 



KEY TO NORTH AMERICAN SPECIES OF ABSYRTUS. 



f , Propodeum with all longitudinal carinae more or less distinct; temples broad 

 and swollen; nervulus broken and frequently with a more or less distinct 



stump of a vein extending into the brachial cell perilissoides, new species. 



Propodeum without longitudinal carinae; temples narrow; nervulus not 



broken _ — - 2. 



2. Propodeum with a distinct but very short petiolar area and posterior lateral 



areas - arealis, new species. 



Propodeum without a petiolar area or posterior lateral areas. 



paniscoides (Ashmead). 



