NO. 2105. NEW SPECIES OF HYMENOPTERA—ROHWER. 247 



PISON (PARAPISON) ERYTHROGASTRUM, new species. 



Judging from the description this is colored similar to pertinax 

 Tm-ner, but that species has ' ' the scape short, scarcely longer than the 

 second joint of the flagellum," the eyes narrowly emarginate and other 

 points of difference. P. (Parapison) erythrocerum (Kohl) has the 

 abdomen largely black. 



Female. — Length 6 mm. Clypeus nearly three times as wide as 

 long, slightly produced in the middle, the production having a broad, 

 low, truncate process; space between the eyes at the clypeus about 

 one-fourth greater than at the vertex; space between bases of 

 antennae about half again as great as that between the antenna and 

 eye; a very obscure impressed line from anterior ocellus, ocelU in an 

 equilateral triangle; postocellar line about one-fifth longer than the 

 ocellocular line; a transverse sulcus behind ocelli so the vertex appears 

 raised; scape longer than the two following joints; antennae short, 

 the third joint subequal with the second and fourth; head finely, 

 closely punctured; pronotum long, not depressed below the mesono- 

 tum; pro- and meso-notum very finely, closely punctured; dorsal 

 aspect of the propodeum subequal in length with mesoscutum, a 

 strong median sulcus, which has a median carina, finely obliquely 

 striate; sides of the propodeum separated from the dorsal and posterior 

 aspects by a carina, very finely striato-punctate-; posterior face of the 

 propodeum finely, striato-punctate, with an incomplete median sulcus, 

 the ventral margin foveolate;- abdomen finely punctured, apical 

 margin of three basal segments depressed, second slightly constricted 

 basally; first recurrent vein slightly basad of apical third; second 

 recurrent vein nearly interstititial with the (second) first transverse 

 cubitus; (third) second cubital nearly pointed on radius; transverse 

 median more than half its length basad of basal. Black; mandibles, 

 palpi, antennae, legs below middle of trochanters, and abdomen fer- 

 ruginous; face, below antennae and pectus with silvery pUe; wings 

 hyaline, iridescent; venation testaceous, stigma and costa brown. 



Duaringa, Dawson District, North Queensland, Australia, One 

 female from W. F. H. Rosenberg. 



Type.— C&t. No. 14255, U.S.N.M. 



Genus NYSSON Latreille. 



NYSSON (BATHYSTEGUS) BASIRUFUS, new species. 



Resembles to some extent Nysson armatus Cresson, but may be 

 readily separated from that species by having the four anterior legs 

 black. 



Female. — Length 5.5 mm. Anterior margin of the clypeus broadly 

 rounded; distance between the eyes at the clypeus about half the 

 distance between them at the vertex; head finely granular with a few 



