hungerford: aquatic hemiptera. 77 



the whole surface minutely scabrous; the costal margin moderately 

 arcuated, a little broadly and almost unifoi-mly reflexed; membrane very 

 long, pale dull yellowish, somewhat clouded basally, the nervules piceous, 

 long and almost straight. Venter black, highly polished, minutely punc- 

 tate and pubescent; the genital segment and sometimes the posterior 

 edges of the others testaceous. The costal margin is testaceous in two 

 specimens, in which the black of that area is much reduced and limited 

 to the posterior portion, inwardly. 



"Length to tip of membrane, 4% -5% mm. Width of base of pronotum, 

 1^-1% mm. 



"From San Diego, Cal. Kindly sent to me for examination by Dr. 

 Hagen from Museum of Comparative Zoology." — Uhler. 



Also reported from Arizona. 



loscytus politus var. flavicosta Reuter 1912. 



Renter, Of. Finska Vet. Soc. Forh. Ill, Afd. A, No. 12, p. 21, 1912. 



"Specimens from Utah a half smaller than the type of polita from 

 California. The costal area of corium and embolium black, while in the 

 type example the entire corium, with the exception of the outermost 

 point, rust-red and embolium yellow." 



Genus LAMPRACANTHIA Reuter 1912. 



"Head (brachypterous form) as broad as base of pronotum, sub- 

 vertical. Eyes strongly exserted, distant from apex of pronotum. Ros- 

 trum reaching to base or apex of posterior coxae. Pronotum shiny, 

 strongly narrowed toward apex, marked by an apical stricture, poste- 

 riorly terminated by a punctate impressed line. Sides sinuate, posterior 

 angles prominent. Sulcus terminating callos posteriorly marked with im- 

 pressed points and longitudinal wrinkles placed far behind the middle. 

 Hemelytra most shiny. Abdomen of brachypterous form a little pro- 

 duced, oval, convex, toward side and apex decurvate, clavus distinct, but 

 corium and membrane coriaceous, merging into one. Veins wanting, or 

 most obsolete. Embolium narrow deplanate. Type Salda crassicornis." 

 — Uhler. Reuter thinks S. anthracina Uhler "Ohne zweifel zur dersel- 

 ben Gattungen gehort." 



Lavipy'acanthia crassicornis Uhler 1877. 



Uhler, Bui. U. S. G. G. Siirv., Ill, p. 438, 1877. 



"Still more slender than the S. anthracina, brassy-black, very highly 

 polished, the upper surface with black erect pubescence. 



"Head long, anteriorly oblique, moderately long and narrow, the eyes 

 very obliquely prominent; vertex a little rugulose, the front dull, some- 

 what shagreened and flattened; the tylus a little prominent, cylindrical, 

 highly polished; the throat concave. Antennae short, stout, the basal joint 

 short, stout, black, yellow at tip; the second joint yellow, about as long 

 as the third and fourth united, much more slender than either of the 

 others, a very little thicker at tip; third joint much thicker, both third 

 and fourth joints subfusiform, black, more conspicuously hairy, equally 

 thick, much longer than the basal one, the last a little longer than the 

 preceding. Rostrum reaching to the tip of the posterior coxae, rufo- 

 piceous, paler at tip. Pronotum sub-campanulate, long and narrow, with 

 the disk much elevated, very convex, occupying all the surface excepting 

 the very narrow posterior lobe, twice indented in the center, bounded 

 behind and each side by a deep, transverse, coarsely punctate line, the 

 posterior lobe consisting of only a slightly elevated linear tablet on 

 the posterior margin, the margin proper moderately concave, the angles 

 produced, acute; the sides deeply decurved, with the edge narrowly 

 recurved, thinning out anteriorly, and bending down at the anterior end; 

 the anterior margin truncate; the submargin with an impressed, punc- 



