169 



punctured than the others, at the apex (which is itself smooth) is a 

 distinct crenulated transverse furrow; the pygidiuiii is coarsely ]iunr- 

 tiired with a smooth keeil (lown the center of the apical half. Apical 

 abscissa of radins roundly curved, the basal curved and slightly angled 

 in the middle; the second recurrent nervure is received beyond the 

 middle close to tiie base of the apical third; it has the front half 

 roundly curved outwardly, the lower straight, oblique; the second 

 tranverse enbitaJ nervure has the npp6r third obliquely sloped outward 

 Iv, the resit is almost straight; the wings have a violaceous ia-idescence, 

 the nervures aaid stigma are deep black. Male. TiCngth fi mm. San 

 Marcos, Nicaragua (Baker). 



The second trnnsverse cubital nervure is ronndly curved outwardly 

 to near the apex, not shaped like a reapling-book as in marcosensis. 

 which differs further from it in not having the post- scutelhim closely 

 rugosely punctured aH over, its apical half being smooth. The form 

 of the second cubital cellule separates it from crenulala; in that species 

 the a,pex is not twice wider than the base; in the present species it is 

 n'ore than twice; the apex of the radius too, projects distinctly beyond 

 it, which is not the case with crenulata. The wings, too, have a much 

 more distinct violaceous tinge. A further distinction lies in the fact 

 that the keel on the base of the thorax is much more prominent in 

 acnfiroUis and the furrow bordering it is deeper, more clearly defined 

 and strongly crenulated. The ne,r^-ures in crenulata, are fuscous, not 

 deep black as in the present species. 



5420 . . Tiphia fulvicauda sp. nov. 



. Black; the pubescence on the head, thorax, base of abdomen and 

 legs white, on the apical segments of abdom&n longer, denser, fulvous 

 or pale golden; the pygidinm is ferruginous; wings hyaline, slightly, 

 but distinctly tinged with fulvous, the stigma black, the nervures 

 fuscous. Metanotum with three keels, the central distinctly thinner 

 than the outer. Female. Length 9 mm. Ormsby <-ounty, Nevada. July 

 (Baker). 



Manclibles bro^adly ferruginous in the middle; the flagellum of anten- 

 nae fuscous below. (Hypeus projecting, clearly separated, of equal width 

 throughout, its apex transverse, smooth and bare; the oral region is 

 fringed w4th long pale golden hair. Front and vertex strongly but not 

 closely punctured. Base of pronotum strongly closely punctured, the 

 apex 'smooth; the pleurae with a broad punctured band around the 

 edges above, the mi.ldle smooth, the rest closely strongly striated ex- 

 cept on the narrowed lower part which is finely rugose. Mesonotum 

 inside the furrows strongly irregularly but not closely punctured. 

 Scutellum with a broad punctured band on the base, a narrow one on 

 the sides and apex (aln.ost a single row of punctures), and a few 

 •cattered ones in the smooth center. Metamotum in the center almost 



