238 HENRY L. VIERECK. 



greater distance between the insertion of the anal nervure and the 

 cubitus on the median nervure and by the stronger sculpture of the 

 metathorax, the ridges being strong, and by the shorter metathora- 

 cic spines which are blunt. 



% . 6 mm. loug. Head. — Front not appreciably protuberant, punctured as in 

 submeUipes ; distance between posterior ocelli distinctly less than that between 

 them and nearest eye margin ; cheek unmargined, about as closely punctured as 

 the front; clypeus and face as in submeUipes ; scape rather cylindrical, the pro- 

 portion between the joints of antenna about as in submeUipes, terminal joint 

 slightly truncate, penultimate joint not produced. 



Thorax. — Dorsulum punctured much like the front; scutellum with the punc- 

 tures not so deep nor coarser than on the dorsulum ; mesopleura punctured much 

 like the dorsulum ; metathorax with short, blunt spines directed outward and 

 upward, superior face with rather coarse ridges not widely separated, posterior 

 face sculptured nearly as in submeUipes. Wings colored much as in submeUipes, but 

 not quite so dark ; transverse median nervure distinctly beyond the basal nerv- 

 ure; third transverse cubitus joining the marginal cell more than the length of 

 the petiole from the insertion of the petiole in the marginal cell ; legs as in sub- 

 meUipes. 



^6(?omen.— Punctures on the first abdominal segment rather shallow and indis- 

 tinctly defined, punctures on the second segment smaller than on the first and 

 third, on the fourth segment the punctures are larger than on the third ; segments 

 5, 6 and 7 with punctures like those on 4, each segment more densely punctured 

 than the other, apical segment almost rugose, spines sharp and slender. 



Black ; mandibles faintly castaneous, tip of the scape brownish, apex of femora, 

 and the tibiae especially at base and apex reddish to brownish testaceous, the 

 tibise between basal and apical thirds more or less infuscated ; first three segments 

 banded as in submeUipes, segments 4 and 5 with lateral dots, one on each side; 

 pronotum with a transverse line on the middle occupying one-half its width ; 

 tubercles and a spot on the scutellum yellow. 



Type locality, Lehigh Gap, Pennsylvania. Type, Acad. Nat. 

 Sci. Phila. June oO, 1901, on Achillea millefolium flowers (H. L. 

 Viereck). 



WysNoiidseckei n. sp. 



Allied to fidelis, from which it differs at once in the first joint or 

 the flagellum being hardly longer than the second joint. 



% . 5 mm. long. Head. — Front not at all protuberant, punctures very fine 

 and adjoining giving a dull granular appearance; ocelli not exactly as if set in 

 around a node; cheek unmargined, punctured like the front vertex and occiput; 

 clypeus orange, its sculpture hidden by the dense appressed silvery pubescence; 

 scape almond shaped, the outer half reddish orange; pedicellum and flagellum 

 as in submeUipes, but the terminal joint excavated beneath and truncate at the 

 tip, penultimate joint slightly produced at tip beneath. 



Thorax. — Dorsulum punctured like the front; punctures coarser on the scutel- 

 lum than on the dorsulum ; mesopleura dull, reticulated ; metathorax with very 



