1899.] NATURAL SCIENCES OF PHILADELPHIA. 451 



widened than in confluenta, the widening commencing at about or 

 behind middle, longitudinally impressed slightly above and trans- 

 versely though not strongly before apex ; second dorsal with close, 

 rather strong punctures, much stronger than in confluenta ; wings 

 subhyaline, fuscous brown in interior half of costal cell ; nervures 

 and stigma dark brown. Length 9 mm. 



Santarem. One specimen. 

 Eumenes cribrosa n. sp. 



9. — Deep black; a narrow line on each side of apical margin 

 of petiole, a twice interrupted broader line on second dorsal, at 

 apex, and a continuous one on segments 3 and 4, or 3-5, and fore 

 tibiie in front, yellow; flagellum fulvous beneath toward tip; head 

 in front with thin silvery pile ; front with close, large deep punc- 

 tures, not impressed; ocelli almost in a straight line, the middle 

 one placed slightly anterior to the others; clypeus convex, subcor- 

 date, about as broad as long, with two small approximate teeth at 

 apex separated by a small triangular notch, with sparse shallow 

 punctures ; thorax almost square, cribrose, especially the mesopleurse ; 

 pronotum in middle as long as first two joints of flagellum, finely 

 margined, more closely punctured than rest of thorax; middle 

 segment short, almost vertical, broadly though not deeply de- 

 pressed posteriorly, its punctuation having a reticulate appearance; 

 peti« le at most as long as thorax, the stem tolerably stout, the 

 enlargement beginning at about middle, strongly punctured, more 

 or less impressed longitudinally, and distinctly so in a transverse 

 manner before apical margin ; second dorsal with tolerably large 

 shallow punctures ; second ventral slightly prominent medially, 

 sparsely punctured toward sides, together with rest of abdomen 

 clothed Avith pale sericeous pile; wings subhyaline, the costal cell 

 anteriorly and a spot in base of marginal cell fuscous; nervures 

 and stigma black. Length 9 mm. 



Var. (?) ?. — Smaller; punctuation of front more separated; 

 clypeus slightly shorter, more strongly punctured; stem of petiole 

 more slender; a yellow spot in middle of hind margin of prono- 

 tum and at base of medial tibi{?e. Length Ih mm. 



Mararii, April, and Santarem. Six specimens, three of each 

 form, both of which occur at the two localities. 



