258 NATHAN BANKS. 



pteiostigma, and oue behind the pterostigma just before the angle; venation 

 mostly black, the pterostigmatal vein yellowish, the apical corners of the cell, 

 and the base of the branch of radial sector are snow-white ; the basal part of 

 radius and niedius are also pale. The pterostigma is long, the outer side very 

 oblique, and the angle not very sharp, yet not rounded ; the cell is five-sided, ex- 

 tending a very short distance on radial sector, it is plainly broader at base than 

 at tip, about one and one-half times as long as broad, and the outer side not con- 

 cave; the posterior cells are all equally wide at base. Length 3 mm. 



Havana, Cuba (Baker). Near P. floridanus, but the pterostigma 



is not as broad, not as angulate behind, the outer side more oblique ; 



and the markings also different. 



Myopsociis maeiilosus n. sp. — Head yellowish, a median brown stripe 

 from ocelli over vertex ; nasus lineate with brown ; antennae pale, densely hairy, 

 first long joint plainly longer than width of head ; thorax pale brown, a pair of 

 dark brown spots close together on top of the mesonotum ; abdomen brown ; legs 

 pale yellowish, darker at tips of the femora and tibise. Wings hyaline, with 

 many scattered small brown spots, and some larger ones; at base of the ptero- 

 stigma, at forking of median, at end of anal vein, three in a transvej-se row ; also 

 in apex of stigma, and in third posterior cell ; but the general appearance of the 

 wings is much paler than in the other species of the genus. Discal cell nearly 

 twice as long as broad, only a little broader at base than at tip, the outer side 

 strongly concave, stigma large, angulate below. Length 5 mm. 



Berkeley, California, June. 



Ca^ciliiis cliii'iis u. sp. — Pale yellowish, antennse slightly brown ; wings 

 hyaline, venation pale, a dark dot at base of stigma, the base of radial sector, the 

 cubitus as it leaves the median, and also with brown cloud just before its tip, and 

 also at tip of anal vein, and smaller clouds at ends of branches of median that 

 form the posterior cells, in one specimen these marks are very indistinct. The 

 wings are rather short, the stigma is long, about as long as the width of wing at 

 middle of length, and of even width throughout, the pedicel of the fork of radial 

 sector is about as long as width of a cell, the third posterior cell is small, about 

 twice as long as high. Length 3 mm. 



Berkeley, California, on bay laurel. 



Polypsocus fasciatus n. sp. — Head dull brownish-yellow, nasus black- 

 ish above; antennae pale yellowish, slightly darker at tips of the joints, very 

 hairy; thorax dull brownish-yellow, rather blackish on the lateral lobes, legs 

 pale yellowish. Wings whitish hyaline, suflfused and marked with pale brown ; 

 a band along apical margin to angle, where it joins a pterostigmal band, broader 

 in front, the pterostigma not more prominent; along the anal vein is a black 

 streak, a narrow, distinct white interruption, and then a black spot; a costal spot 

 of brown before the stigma, and in the middle of the wing behind the latter spot 

 are several brown patches adjoining white-margined veins. Tlie venation is on 

 the plan of the genus; the anal cell even longer than the pterostigma, and just 

 before the origin of the radial sector are one or two short veins invading the cell 

 from beneath and usually forming one or two small cells. Length 3.2 mm. 



From Cayamas, Cuba (Baker). 



