468 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Ithaca ; male, 21 June, 1914, Portageville ; male and females (2), 11 July, 1920, 

 Taghanic (H. H. Knight). Males and females (6), 8 July, 1919, male and 

 female, 24 July, 1920, Cranberry Lake (C. J. Drake). Quebec — Males (2), 

 1 July, 1920, St. Hilarie (G. A. Moore). 



P. alnicola Douglas and Scott. 



Psalhis alni Douglas and Scott, Brit. Hemiptera, 414, 1865. 



Length 3.6 mm., width 1.4 mm.; carmine red, head, pronotal 

 disk, and scutellum, flecked with fuscous ; cuneus bright red, nar- 

 rowly pale at base ; membrane fuscous, slightly paler across middle ; 

 antennae yellowish, segment ii darker at apex ; clothed with yel- 

 lowish, sericeous pubescence and intermixed with more erect dusky 

 pubescent hairs ; legs yellowish but sometimes tinged with reddish, 

 femora dotted with prominent blackish spots, tibial spines with 

 black spots at base ; sternum and base of genital segment fuscous. 



Breeds on Alnus rugosa in cool humid surroundings. 



Minnesota, New York. New Hampshire — Female, 24 Sept., 1907, Mt. 

 Washington, alt. 2,500 ft. (O. Bryant). 



*Psallus waldeni Knight, new species. 



Female: Length 2.5 mm., width 1.08 mm. Head: Width 

 .66 mm., vertex .38 mm. ; black, slightly paler on vertex. Ros- 

 trum, length 1.08 mm., yellowish, blackish only on apical segment, 

 reaching upon hind coxae. 



Antennae: Segment i, length .17mm.; ii, .66mm., slender, 

 slightly thicker apically but not attaining thickness of segment i, 

 very finely pale pubescent ; iii, .43 mm. ; iv, .28 mm. ; black, last 

 two segments pale fuscous. 



Pronotum : Length .40 mm., width at base .9 mm., width anterior 

 angles .57 mm. ; fuscous black, scarcely shining; clothed with fine 

 erect pubescent hairs and intermixed with closely appressed pale 

 •sericeous pubescence, propleura bearing only simple pubescent 

 hairs. Scutellum black, mesoscutum moderately exposed, a pale 

 spot at each side ; sternum and propleura blackish, basalar plate 

 yellowish. 



Hemelytra : Embolar margins slightly arcuate ; f usco-blackish, 

 cuneus uniformly colored like the corium ; pubescence similar to 

 that on pronotal disk. Membrane uniformly pale fuscous, veins 

 and narrowly bordering apex of cuneus, paler. 



Legs : Yellowish to f usco-brownish, hind femora darker ; femora 

 with black spot on dorsal margin at apex, and with a second 

 slightly larger subapical spot bearing two prominent bristles, front 

 and middle pairs exhibiting a row of fuscous spots on lower 

 margin of anterior face ; tibiae pale, bearing two rows of very 

 prominent black spines, length of spines nearly equal to twice 

 thickness of segment, a large black spot at base of each spine, spots 

 becoming obsolete on apical half of anterior pairs ; tarsi fuscous. 

 Venter black, pale pubescent. 



Holotype: Female, 30 May, 1911, New Haven, Conn. (B. H. Walden) ; 

 author's collection. Paratype : Female, taken with type. 



