NO. 1920. NEW BEES AND ICHNEUMON-FLIES— VIERECK. 647 



Genus ZACHRESTA (Foerster) Woldstedt. 



Zuchresta Foerstkr, Vcrh. Nuturli. Ver. Treufw Rhcinland, vol. 25, 18G8, ]>. jr>l, 

 nospeciea.; Bull. Acad. Sci. St. Petorsbourg, vol. 23, 1877, p. -l.'JG (.'«paraU'), 

 one species. 



Type. — Zachresta insignis Woldstedt. First species included. 



As represented by ZacJiresta popojfensis Ashmead, this genus agrees 

 with characters in bold face type in the description of Benjaminia 

 ^'iereck given on page 633 of this paper, but dilfers in the di.stance 

 between hind ocelli and occipital carina, being equal to or distinctly 

 less than the distance between the hind ocelli; in having an areolet 

 which receives the recurrent vein beyond the middle ami in the 

 spiracles of the first dorsal segment being nearer to each other than 

 to the apex. 



ZAMANSA, new genus. 



In having the radial side of the areolet longer than the cubital 

 side this genus may be said to resemble Mansa Tosquinet, the })r()po- 

 deum is not sulcate however as in Mansa and has a basal transvei-se 

 carina as w^ell as a lamella on each side representing the apical trans- 

 verse cai'ina; spiracles of first abdominal segment nearer to each other 

 than to the apex, postpctiole with a smooth, shallow furrow on its 

 anterior half; frontal basin bounded laterally by a prominent carina 

 that terminates above nearly as far from a lateral ocellus as the latter 

 is to its fellow^; tliirteenth and most following joints of antennte 

 broader than long. 



Type. — Cry plus aztecus Cresson, 



ZASTERNAULAX, new genus. 



Apparently related to Idioxenus Foerster, from which as represented 

 by /. variator Foerster it can readily be distinguished by the complete 

 sternauli, by the propodeum being longer than the liind coxa; and by 

 the simple antennae in the male. 



Type. — Zasternaulax simplidcomis, new species. 



ZASTERNAULAX SIMPLICICORNIS, new species. 



Male. — Length, 4.25 mm.; black; clji^eus blackish at base, trans- 

 versely impressed and brownish beyond; mandibles and palpi stra- 

 mineous, the former with blackish tips to the teeth; malar line apjjroxi- 

 mately half as long as the mandibles are wide at base; antennie brown- 

 ish; flagcl 26-jointed, all joints longer than thick and cylindrical, 

 exceptmg the apical joint, which is conical, the first joint a little 

 shorter than the second; tegula) stramineous; wing base yeJlowi.sh; 

 wings tilmost colorless, stignui blackish, most veins ilark brown to 

 blackish; legs yellowish, onychium and j)cnultiniato tarsal joint 

 brownish, hind coxae mostly blackish; areola extending nearly two- 



