84 THE UNIVERSITY SCIENCE BULLETIN. 



constricted sides of the pronotum, the larger size, the angular nervure 

 on the inner margin of the corium, and blackish color. 



"Moderately large and robust. Head long, hairy, strongly deflected, 

 with two distinct, longitudinal furrows (the furrows converging an- 

 teriorly) and a distinct median ridge between these furrows, the sides 

 very strongly depressed above the eyes, and a longitudinal furrow just 

 beneath the eyes and antennas. Eyes prominent, the facets few and 

 large. Antenniferous tubercles large, prominent. Antennae very short, 

 a little longer than the head; first, second and third segments subequal, 

 the fourth stoutest, longest and fusiform. Bucculje large, v^dth a longi- 

 tudinal furrow on each side at the base. Pronotum rugulose, very 

 coarsely punctate or pitted, beset with a few hairs, moderately con- 

 stricted at the sides, with a broad, median longitudinal furrow in which 

 are two rather regular rows of foveae, with a rather broad, transverse, 

 punctate depression on each side just back of the collar. Collar prom- 

 inent, ornated with foveae. Humeri well defined by a sulcus in which is a 

 row of six or seven foveae; posterior margin of pronotum also with a 

 transverse row of foveae. Sides of thorax with quite regular rows of 

 foveae. Scutellum distinctly carinate. Rostral sulcus broad; rostrum ex- 

 tending a little beyond the thorax. Acetabuli very far apart, especially 

 the intermediate and posterior pairs. Legs rather stout, hairy; claws 

 very long, almost half the length of the terminal tarsal segment. Entire 

 body velutinous. Abdomen densely hairy beneath; connexivum narrow. 

 Venter longitudinally depressed in the male, concave in the female. 

 Hemelytra with large, hairy nervures. Length, 1.6 mm.; width, .75 mm. 



"Color: General color blackish. Antennae dark-yellow, the terminal 

 segment infuscated. Prothorax blackish, the disc more or less reddish- 

 brown. Legs testaceous, the tips of tarsi infuscated (the claws excepted). 

 Body beneath blackish, the thorax and abdomen covered with a grayish 

 pubescence. Hemelytra white, with dusky patches; nervures brownish- 

 black. Wings white, opaque." 



Numerous macropterous examples, taken in a stagnant pond at Ira 

 (Summit Co.), Ohio, August 31, 1916, by Professor Hine and the writer. 

 I have received a specimen from Prof. C. P. Gillette labeled Fort Collins, 

 Colo., August 8, 1898. 



Merragata b^-unnea Drake 1917. 



Merragata brunnea Drake. The Ohio Journ. Sci., vol. 17, p. 105. 



"Shorter than M. foveata Drake, the pronotum more abruptly con- 

 stricted on the sides, the inner margin of the corium rounded, the head 

 and the pronotum reddish-brown or dark reddish-brown, and the dusky 

 patches on the hemelytra evanescent. 



"Macropterous form. Head hairy, strongly deflected, the sides strongly 

 depressed above the eyes, with two longitudinal furrows converging an- 

 teriorly (a median narrow ridge between the longitudinal furrows), a 

 longitudinal furrow on each side of the head just beneath the eyes and 

 antennse. Antenniferous tubercles large and prominent. Antennae short, 

 a little longer than the head; first, second, and third segments subequal; 

 fourth segment longest, stoutest, fusiform. Rostrum reaching a little 

 beyond the posterior coxse. Pronotum rugulose, coarsely punctate, 

 sparsely hairy, the sides more abruptly constricted than in foveata, with 

 a transverse, punctate depression on each side just back of the collar. 

 Collar prominent, ornated with foveae. Scutellum with a narrow median 

 carina. Sides of thorax with somewhat regular, transverse rows of 

 fovese. Abdomen hairy beneath; venter is slightly depressed longitudi- 

 nally and convex in the female. Hemelytra with large, prominent ner- 

 vures; the inner nervure of corium broadly rounded. Wings about as 

 long as the hemelytra. Length ( ^ and ^ ), 1.45 to 1.5 mm.; width, 

 about .65 mm. 



