THE CANADIAN ENTOMOLOGIST 85 



yond level of cuneal apices distinctly less than length of cuneus; veins of mem- 

 brane distinct, variable, connected apically by a very feeble arcuate vein. 

 Length 9 3.35-3.67 mm.; width 1.39-1.50 mm 



Holotype.— 9 , Peaks Island, Maine, 3 Aug., 1919, (G. A. Moore), in my 

 collection. 



Paratype. — 9, Ottawa, Canada, 1 Sept., 1905, (A. Gibson) (bears also 

 label reading Gibson 7—21—12), in \'an Duzee's collection. 



This species is especially distinguished by the very narrow explanate margins 

 of the pronotum, which do not extend forward to the middle of the pronotal 

 collar and turn sharply inward and backward as they do in the palaearctic 

 hicuspis Herrich-SchaefTer {vittatus Fieber). The proportions of antennal and 

 rostral segments are somewhat different, the surface is more shining, and the 

 fine pubescence of the dorsal aspect is twice as long in americana. Through 

 the kindness of Mr. E. H. Gibson I have had for comparison a fine series of 

 hicttspis, collected and determined by Montandon. 



Tetraphleps uniformis, sp. nov. 



Similar to americana except in the following characters: 



Colour almost uniform light brown, head a shade darker, hemielytra a 

 shade lighter. Membrane light smoky brown, with a very vague paler area at 

 base and one along middle portion only of each vein. Tibiae inwardly and 

 apices of femora pale. 



Head excluding collar and including eyes as long as broad; the diameter 

 of an eye distinctly less than one-half width of vertex (5—13) ; length of anteocular 

 portion distinctly less than twice the length of an eye (12-8). Antennae long 

 and slender, much longer than head and pronotum together (60—45) ; first seg- 

 ment reaching almost to apex of juga; second segment longer than width of 

 head including eyes (24—22). Pronotum distinctly transversely rugulose in 

 basal area, the punctures here most extremely fine. Basal emargination very 

 obtusely angulate, not rounded (possibly a \'ariable character). Lateral ex- 

 planate margins very narrow, but appreciably reflexed. Apex of cuneus nar- 

 rowly rounded. Membrane long, its length beyond cuneal apices equal to length 

 of cuneus. Length 9 3.68 mm.; width 1.46. 



Holotype. — 9, Mt. Washington, New Hampshire (Mrs. A. T. Slosson), in 

 Mrs. Slosson's collection. 



This species may be distinguished from americana by its pale, uniform 

 coloration and by the proportions of head, antennae, and membrane. Probably 

 the American forms will be found to occur on coniferous trees, since the European 

 T. bicnspis is reported as frequenting firs and larches in England. 



\'an Duzee has communicated to me his opinion that Provancher's de- 

 scn^Uon^oi Tetraphleps canadensis seems to refer to a true Tetraphleps, although 

 the specimen bearing this name in the Provancher collection is a species of 

 Lyctocoris. The mention of hemielytra "a coin fort long" and membrane 

 "avec 4 nervures longitudinales tres distinctes" would favour this opinion, but 

 on account of the omission of more important characters it is hardly possible 

 to reach a certain conclusion. Provancher's description is scarcely detailed 

 enough for specific recognition, and even as far as it goes it fails to apply closely 

 to either of the species c haracterized above. 



4^ Pet. Faune Ent. Can., Vol 3, 1886, p. 90. 



