HUNGERFORD: AQUATIC HEMIPTERA. 69 



angle; and beyond this nervure, on the disk, is a long black spot; nerv- 

 ures black, sometimes pale posteriorly, and occasionally destitute of the 

 intervening black spots; membrane pale yellowish or white; the nervures 

 piceous or black, excepting the exterior one, which is generally pale, with 

 a black spot at its tip ; across the middle is a series of oblong spots, and 

 sometimes a larger one near the base of the third cell, the apical margin 

 generally infuscated; sternum black, the prosternum slenderly margined 

 behind with yellow; legs yellow, with fine, short, yellow hairs; the femora 

 having two rows of brown points on the inner and outer faces, the under 

 side with a blackish streak ; tibiae with black spines and apex, the anterior 

 pair with a blackish line on the under side; apex of the last tarsal joint 

 black, the nails pale brown; abdomen black or blackish, the posterior 

 edges of the ventral segments whitish, that of the apical segments broadly 

 whitish. 



"Length, 3-5 mm. Width of pronotum, 1%-!^^ mm. 



"Dr. Stal reports this species to have been taken in Sitka. Speci- 

 mens belonging to the Museum of Comparative Zoology, kindly sent to 

 me for study by Dr. H. A. von Hagen, were taken at San Diego and 

 Bard's Ranch, Cal. These specimens are larger than those from the 

 Rocky Mountain region, of which many have passed through m.y hands, 

 from various localities in Utah, New Mexico, etc. In the western sub- 

 urbs of Denver, Colo., it may be met with in untold numbers on the dark, 

 damp, sandy, and muddy soil, during the month of August. A few speci- 

 mens occurred to me on dark, damp soil, next the stream of water run- 

 ning down the Beaver Brook Gulch, and also in similar spots in Clear 

 Creek Canon. I can find no characters to separate it from specimens 

 which I collected in Hayti on the marshy banks of the Grand Anse river 

 in May, nor from Cuban specimens received from Professor Poey. It 

 occurs also in New Jersey and on the dark mud of the sea coast of 

 Maryland. 



"Dr. Packard collected it near Georgetown, Colo., July 8, at an eleva- 

 tion of 9,500 feet, and also near Salt Lake, Utah, July 27." — Uhler. 



Reported also from New York, Ontario and Nevada. 



Parshley adds Maine, New Hampshire, Vermont, Rhode Island, Con- 

 necticut and Massachusetts. 



Saldula laticoUis Renter 1875. 



Reuter, Pet. Nouv. Ent., I, p. 544, 1875. 



"Similar to S. saltatoria and referrable to the same division, but much 

 larger, pronotum strongly transverse, \vith an arcuate impression and a 

 profound foveola on the disk. Middle of the sides straight. Hemelytra 

 marked as in S. saltatoria, but the external margin of the corium with a 

 large single spot (often paired) situated immediately behind the middle. 

 Length, 4.75 mm." 



Saldula sphacelata Uhler 1877. 

 Uhler, Bui. U. S. G. G. Surv., Ill, p. 434, 1877. 



"Elliptical, dusky, testaceous, dull, clothed above with minute, close, 

 appressed, fuscous pubescence. Head stout, obliquely curving, almost 

 vertical, pale tawny, inscribed with black on the vertex and with a black 

 spot behind, the base convex; clypeus longitudinally indented at the base 

 of the tylus; front with an indented, oblique, brown line each side, and the 

 usual impressed line in the middle; basal margin of the eyes and an im- 

 pressed line bounding the quadrangular bed of the ocelli blackish; ocelli 

 honey-yellow. Rostrum reaching upon the base of the posterior coxag, 

 slender, yellowish, becoming piceous toward the tip. Antennae stout, 

 setose, pale flavo-piceous, more or less dusky, particularly on the last 

 two joints, the basal pale, short, thickened toward the tip; second joint 

 very long and slender, faintly thicker at tip; fourth much longer than 



