AMERICAN NEUROrTKRA. ZO I 



Peria lycorias Xewnian. 



Specimens from New York and Canada. The spot over ocelli is 

 forked behind front ocellus, and connected to spot at base of an- 

 tennae; the pronotum is more or less yellowish. , 



PerIa iminargiiiata Say. 



Various places in Oliio, also Michigan. No spot over ocelli ; 

 rather smaller than P. /_(/co?7V/.i% especially the males; the wings have 

 a faint yellowish-brown tinge. 



Pei'Ia cai*oliiien!<>iis Banks. 



Only seen from North Carolina; black spot over ocelli extends 

 forward so that it is very large; wings brownish, venation blackish ; 

 nearly as large as P. couloni. All specimens seen have a cross-vein 

 from near tip of upper branch of radial sectc)r to the radius or near 

 tip of radius. 



Perla xanthenes Xewman. 



Specimens from Virginia and North Carolina. Wholly greenish 

 yellow or yellowish, no spot over ocelli, venation pale. 



Perla valida Banks. 



Only from North Carolina; looks much like P. bmnavijinaUi, no 

 mark over ocelli. 



PS0CIDJ5. 



PSOCIIS persiniilis n. sp.— Head yellowish, nasns finely lineate with 

 black ; eyes prominent; their tops higher than vertex ; antenna^ brown, slender : 

 den-sely short haired, first joint plainly a little longer than distance between 

 eyes; thorax and abdomen brownish; legs pale yellowish. Wings hyaline; 

 venation mostly brown, a faint pale spot at fork of radial sector, and at outer ti|i 

 of the discal cell; stigma brown on apical half, the color extending somewhat 

 below, a black dot at base of stigma, and also one at end of anal vein ; discal cell 

 slightly five-sided, about one and one-third broader at base than at tip, neitlier 

 side concave; the third posterior cell is shorter on base than the others, wiiich 

 are subequal; stigma long, evenly rounded behind. Length 4 mm. 



Brownsville, Texas (Snow); allied to /-*. confratennis, but smaller, 

 less marked, and with differently shaped discal cell and more 

 rounded stigma. 



Pmocus cubaims n. sp.— Nasiis black, vertex pale; antennse pale on basal 

 part, darker beyond; thorax dull black, hind margin of mesothorax and meta- 

 thorax narrowly pale; legs pale yellowish. Wings hyaline, whitish on basal 

 part; a black band across wing from end of anal vein, but not reaching the 

 costa; a black spot at base of pterostigina, a larger black spot in apical part of 



TRANS. AM. ENT. SOC. XXXIV. (3:5) SEPTKMISKR, 190i!. 



