26 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



antennae; frons irregularly rugose above, scrobes with striae radi- 

 ating from antennal foramina; face less densely punctate, clypeus 

 and malar space sparsely so; antennae about three-fourths as long 

 as body, fourth flagellar joint two-thirds as long as third. Notauli 

 distinct anteriorly; inner margins of lateral lobes polished and 

 almost impunctate; lower division of metapleurum coarsely punctate 

 but not rugose ; propodeum reticulate rugose ; apophyses compressed ; 

 postnervulus broken very nearly at middle. 



Head and thorax colored as in texanus except that there is a whitish 

 spot on mesosternum along sternaulus, the spots on scutellar carinae 

 are usually and those at base of propodeum apparently always lack- 

 ing, and the spots covering the apophyses are much larger ; abdomen 

 as in texanus except first tergite red with apex whitish; black and 

 whitish on second tergite separated by an irregular reddish streak; 

 hind coxa red, whitish below and at base above, tarsus red apically. 



The male is unknown, unless, as I suspect, it is candidus (Cresson). 



The type of audax is from Georgia, that of exaptus from Massa- 

 chusetts. The National Museum material is as follows: Lucaston, 

 N. J., October 10, 1902 (one specimen compared with types), Penn- 

 sylvania — Carlisle Junction, August 28, 1909, W. S. Fisher; Ingle- 

 nook, September 10, 1909, A. B. Champlain. Maryland — Baltimore ; 

 Cabin John, September 7, 1917, R. M. Fonts; Plummer Island, 

 October 12, 1906, A. K. Fisher. Virginia — Great Falls, September 

 12, 1912, A. N. Caudell. Alabama— Pyziton, Clay County, H. H. 

 Smith. 



None of the National Museum specimens is quite so large as the 

 type of audax nor quite so small as that of exaptus, but they form a 

 good variation series between the two. 



CRYPTUROPSIS SAUNDERSI (Cresson) (new combination) 



Mesostenus saundersi Cresson, Can. Ent., vol. 10, 1878, p. 208, female. Type. — 

 No. 1187, Acad. Nat. Sci. Phila. 



Much like audax but head and thorax much less extensively marked 

 with whitish and first tergite entirely and second apically red. 

 Known only from the unique type, which is from " Canada West." 



CRYPTUROPSIS? ARMATUS (Provancher) (new combination) 



Mesostenus armatus Peovancher, Addit. Faune Ent. Can. Hym., 1889, p. 76, 



female. 

 Otacustes armatus (Provancher) Davis, Can. Ent., vol. 27, 1895, p. 288. Type. — 



Coll. W. H. Harrington. 



The transfer of this species to Cryptoropsis is on the strength of 

 a note on the type by S. A. Rohwer, which says that it runs in 

 Ashmead's key very satisfactorily to this genus. The species assigned 



