1897.] NATURAL SCIENCES OF PHILADELPHIA. 229 



CONTRIBUTIONS TO A KNOWLEDGE OF THE HYMENOPTERA OF BRAZIL, 



NO. 2.-P0MPILIDJE. 



BY WILLIAM J. FOX. 



In this, the second paper based on the collections of Mr. Herbert 

 H. Smith made in Brazil, many species are described, presumably 

 for the first time. Much difficulty has been encountered in de- 

 termining the Pompilida? in question because the writer has 

 been obliged to rely entirely on descriptions, which in many in- 

 stances are faulty and meager. The difficulty has been height- 

 ened by the diversity of classification of the older writers on the 

 subject. 



Ceropales abdominalis Tasch. 



Corumba (April, May). Three female and one male specimen. 

 Ceropales sp. 



A male from Corumba (April) is close to abdominalis, but the 

 antenna? are fulvous beneath, the apex of dorsal segments 2-6 and 

 seventh entirety are yellow, and punctuation of head and thorax is 

 coarser. 



Notocyphus saevissimus Sm. 



Corumba (April, May) ; Santarem (September). 

 Notocyphus tyrannicus Sm. 



Chapada (March). Six specimens, varying from 19-28 mm. The 

 larger specimens lack the purplish and bluish pile mentioned by 

 Smith. 



Notocyphus brevicornis n. sp. 



9 . — Black, subopaque ; palpi testaceous ; head indistinctly punct- 

 ured ; space between eyes at top about equal to length of the second, 

 third and half of the fourth an tennal joints ; hind ocelli separated by 

 a distance at least equal to that between them and nearest eye-mar- 

 gin ; the front is broader than in tyrannicus ; clypeus broadly truncate, 

 not twice as broad as long ; labrum nearly as long as the clypeus is 

 broad, narrowed anteriorly and emarginate ; eyes well separated 

 from base of mandibles ; antenna? stout, short, not longer than head 



and thorax united, the first joint of flagellum longer than the second ; 

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