TRIBE XVIII. BARINI. 355 



rounded to tip; disc strongly convex, coarsely, very densely punctate, with 

 often a narrow, smooth median line. Elytra equal in width to thorax, 

 striffi coarse, deep; intervals alternately wider, with coarse, close punctures, 

 confused on the wider intervals. Length 3.54.8 mm. (Fig. 91.) 



Frequent throughout Indiana; June 7 July 6. Taken from 

 the flowers of Jersey tea, Ceanotlms americanus L., and other 

 plants, usually in the vicinity of ponds. Anglesea, N. J., and 

 West Point, N. Y. ; May 30. Eanges from New England to Colo- 

 rado, south to Florida and Texas. Varies greatly in size and 

 sculpture. 



Casey united the two species transversa and interstitiaUs of 

 Say under the former name, whereas, if they are the same, inter- 

 stitiaUs has priority by seven years. Moreover, Say (1831, 18), 

 distinctly states that the punctures of interstitiaUs have a "trans- 

 verse rugulose appearance,'' and again in comparing the two 

 species says that "in the form of the thorax transversa resembles 

 interstitiaUs, but the punctures (of thorax) are much larger, the 

 posterior lobe more rounded, and the punctures of the intervals 

 are rounded." His original description of interstitiaUs, taken in 

 connection with his subsequent statements above quoted, leave no 

 doubt but that the species called trans versa by Casey is Say's 

 interstitialis as above described by us. What Say's transversa is 

 we do not know unless it be Casey's callida. The type of carinu- 

 lata Lee., shows it to be, as pointed out by Casey, only a form of 

 interstitiaUs with median smooth line of thorax more distinct and 

 punctures of intervals less confused. 



532 (11,093). BARIS UOLOSA Casey, 1892, 490. 



Oblong-oval, strongly convex. Piceous-black, shining, the elytra often 

 piceous. Beak two-thirds, male, three-fourths, female, as long as thorax, 

 thick, coarsely and closely punctured on sides. Thorax two-fifths wider 

 than long, coarsely, closely and deeply punctate, the punctures separated 

 by one-half to two-thirds their own diameters. Elytra slightly wider at 

 humeri than thorax, sides subparallel, apex broadly rounded, striae deep, 

 punctate at bottom. Length 3.2 3.6 mm. 



Kosciusko Co., Ind., scarce; June 3 25. Described from 

 Indiana, Long Island, N. Y., Pennsylvania and Iowa. "A strongly 

 and deeply sculptured species, resembling transversa but much 

 smaller." (Casey.} 



GROUP C. 



To this group, as defined in the key. belong 17 of our eastern 

 species of the genus. They are all less than 4.2 mm. in length, 

 for the most part strongly shining, and the males have the ab- 

 domen but slightly if at all modified. 



