222 ENTOMOLOGICAL NEWS. [May, 'oS 



sharp, very finely punctured, with a few widely scattered large punc- 

 tures. Color black; apical tarsal joints rufous; abdomen clear red, 

 with triangular shaped patches of silvery pubescence on apical lateral 

 margin on the first, second and third segments (this pubescence can 

 only be seen in certain lights) ; face, pectus and lower part of pleurae 

 with silvery pubescence. Wings dusky hyaline, nervures black. 



Habitat. Jim Creek, Boulder Co., Colo., September 7, 1907 

 (Glenn M. Hite). 



The pygidium is similar to that of triquetrus Fox (Nev.) 

 but it is not that species. 



Disregarding the pygidium it runs in Fox's N. Am. Lar- 

 ridse, to tarsatus Say, but differs from that species as follows : 

 punctures on the dorsulum not uniform throughout; poster- 

 ior face of metathorax not striated but punctured; abdomen 

 above with fine punctures ; smaller size, etc. 



It also seems related to T. punctulatus H. S. Sm. (ENT. 

 NEWS, Sept. '06, p. 246) from Nebraska, but may be separated 

 from that species by these characters; clypeus densely and 

 rather coarsely punctured; different puncturing of the front; 

 scape and mandibles without rufous; differently punctured 

 dorsulum ; abdomen clear red, with silvery pubescence at sides 

 of first three abdominal segments, etc. 



Tachysphex foxii n. sp. 



$ . Length 8 mm. Clypeus rounded anteriorly, the apical margin 

 slightly uneven, lateral teeth if present very small, rather densely 

 punctured throughout ; front with large well separated punctures, punc- 

 tures on vertex not quite as dense; a distinct furrow from lower ocellus 

 to near occiput ; depression back of lateral ocelli rather distinct ; space 

 between eyes at the top a little more than the length of antennal joints 

 three plus four ; dorsulum, scutellum and postscutellum shining, with 

 distinct well separated punctures ; mesopleurse and pectus similarly 

 punctured ; metathorax above reticulate to coarsely granular ; meta- 

 pleurae densely coarsely punctured; posterior face somewhat indis- 

 tinctly striated, with a distinct elongate fovea, which is wider at the 

 top ; abdomen with fine dense punctures above, except the apical mar- 

 gin of the second and following segments which are shining and with- 

 out punctures, venter shining, without or with very few puncture^; 

 pygidium margined, about twice as long* as the width at base, with a 

 few widely scattered punctures. Color black ; band on middle of man- 

 dibles and two apical segments of abdomen rufous (abdominal seg- 

 ments brighter rufous) ; sides of abdominal segments, face, lower half 



