OF WASHINGTON, VOLUME XII, lull). 51 



Related to rirgatus Fox, but is distinct in sculpture. Named 

 for Mr. H. L. Viereck, who had determined it as new before 

 the writer studied it. 



Thyreopus (Crossocerus) daeckei, new species. 



Female. Related to Thyreopus (Crossocerus} lent us (Fox), hut may 

 be known by the following comparison : 



T. (C.) lentns (Fox). T. (C.) daeckei, new species. 



I. Length, > mm. 1. Length, .">..'i mm. 



L'. Episternal suture of the meso- _. Episternal suture of the meso- 



pleura- gently curved. pleura- nearly straight. 



:!. Furrow of the metanotum :!. Furrow of the metanotum 



broader anteriorly. broader posteriorly. 



4. Furrow of the posterior face 4. Furrow of the posterior face 



narrow, uniform in width. broad, broader above. 



'>. Clypeus all black. ">. Clypeus with two pale spots. 



(I. Anterior margin of the pro- (i. Anterior face of the prothorax 



thorax shining impunctate. opaque, finely punctured. 



Type locality : Lucaston, New Jersey, May 28, 1904. One 

 female collected by Mr. V. A. ,E. Daecke. 



Type: No. 12911, U. S. National Museum. 



The female of harrisi Pack, is undescribed and there are 

 no specimens of it in the collection of the Museum, so this 

 may be the female of that species. However, there seems to 

 be more than sexual differences between daeckei and the 

 male of harrisi. 



Tachysphex similis, new species. 



Much like the ticutiis Patt., but the wings are clear, the pygidium 

 broader, and the dorsulum more closely punctured than the scutellum. 



Female. Length, li mm. Anterior margins of the clypeus rounded 

 out a little broader medianly, surface as is the front, granular : vertex 

 with the punctures separate and the occiput shining, with well-separated 

 punctures : third antennal joint a third shorter than the fourth ; space 

 between the eyes at the top nearly as great as the length of the first two 

 Hagellar joints; dorsulum with close, distinct punctures, the punctures 

 closer laterally : scutellum not impressed, with widely separated, distinct 

 punctures : metanotum closely and rather coarsely granular, separated 

 from the transversely striated posterior face by a carina which is broken 

 in the middle : depression of the posterior face large : metapleura- trans- 

 versely striated : legs with weak spines : second cubital cell broader than 

 the third on the radius : abdomen normal : pygidium with scattered punc- 

 tures, about twice as long as wide at base. Black : spines white: api- 

 cal abdominal segment red or black; silvery pubescence as usual : wings 

 faintly dusky hyaline, iridescent : venation very dark brown. 



