hungerford: aquatic hemiptera. 61 



subequal, the third a little thicker, both slender on the ends. Pronotum 

 subcampanulate, narrow, very much rounded in front, the lateral mar- 

 gins flattened and a little reflexed, but tapering very slenderly in the di- 

 rection of the collum, before reaching which it turns downward and fades 

 out; the anterior lobe very narrow, but strongly convex, indented on the 

 middle and constricted in front, more or less golden pubescent, and 

 punctate in the depressed lines; the posterior lobe flattened, transversely 

 a little wrinkled, shagreened, and somewhat pubescent; the posterior 

 margin deeply concavely sinuated, the humeral angles produced, broad, 

 flat. Scutellum densely shagreened, sparingly pubescent, a little convex 

 at base, and depressed before the tip. Prosternum either black, or 

 broadly margined each side behind with white, and, together with the 

 disks of all the pleural pieces, pubescent and rugulose. Coxte terminated 

 with piceous or testaceous, the femora pale piceous or yellowish, darker 

 at the knees, and sometimes with a few brown dots on the sides ; tibiae 

 yellow, infuscated at tip, and with the spines piceous; tips of the tarsal 

 joints dusky or piceous, with the nails paler. Hemelytra highly polished 

 coal-black, remotely set with shallow punctures, faintly golden pubescent, 

 the costal margin strongly arcuated, at base broadly expanded, and a 

 little upturned, the edge recurved, and the area very broad, the up- 

 turned mai'gin continued tapering to near the tip of corium; the clavus 

 bounded on the inner sub-margin and outer suture by impressed punc- 

 tate lines; membrane almost as thick as the corium, black, tinged with 

 piceous, sometimes with about three pale brownish spots in the longer 

 areoles. Venter brilliant black, closely, minutely punctate, coated with 

 sparse, fine pubescence. The hemelytra are M'ider at base than the pro- 

 notum, and they gradually widen in their curve posteriorly, 



"Length to tip of venter 5-6 millimeters; to end of membrane 6-7 

 millimeters. Width of base of pronotum scant to full 2 millimeters. 

 Full width across the corium 3-3 ^/^ millimeters. 



"The greatest number of specimens thus far acquired have been from 

 eastern Massachusetts. Mr. Sanborn collected several near Andover; 

 Mr. Scudder secured one in the vicinity of Lake Winnipeg; Robert Ken- 

 nicott found it in British America, near Mackenzie river; other speci- 

 mens have been sent to me from Northern Illinois; and the Museum of 

 Comparative Zoology has specimens from British Columbia, collected 

 July 14. The genital segment of the male is wider than long, almost 

 gibbous, with the central attachments stout, curved toward each, and the 

 exterior appendages long, slender, and overlapping each other when at 

 rest. A specimen, the original type, was taken at Ogden, Utah, and 

 another by B. H. Smith in the region of Denver. The nymph, from 

 Massachusetts, has the usual 2-jointed tarsi, is broader and relatively 

 flatter than the imago, and much resembles, particularly in the form of 

 the abdomen, the common oriental cockroach." — Uhler. 



Van Duzee adds New York, New Jersey, Maine, and Ontario. 



Salda anthracina Uhler 1877. 



Uhler Bui. U. S. Geol. Surv. Ill, p. 438. 1877. 



"Form of S. coriacea, but still more slender, the pronotum narrower 

 and more convex, and the -wing-covers very arched and decurving over 

 the body like the shell of a terrapin. Deep, coal-black, shining. Head 

 moderately narrow, minutely pubescent; the eyes very large, prominent, 

 and oblique; face long, oblique, dull black, rugulose, with the impressed 

 lines faint, and the shield of the vertex obsolete; base of head forming a 

 distinct neck, coarsely shagreened and rugulose, a little flattened on top, 

 rounded off' posteriorly. Rostrum reaching to the posterior coxae, piceous- 

 black, paler at tip. Antennae stout and long; the basal joint long, black, 

 not much thicker and but little shorter than the third; second about 

 twice as long, yellow, black at base, dusky, and a little enlarged at tip; 



