banks: new neuropteroid insects. 11 



pale each end and on the sides, eighth with median dark Hne and basal 

 band, ninth rather darker with dark median stripe, tenth dark except 

 apical and lateral margin; setae pale, every fourth segment wholly 

 dark, the joinings between dark (Plate 2, fig. 20) ; all femora wdth 

 a rather broad preapical band, femur I of male with subbasal band 

 also, and the tip of tibia dark. Wings hyaline; veins mostly yellow- 

 ish or pale brown, great cross-vein broadly black, no cross-veins in 

 basal costal area, 10 or 12 in apical part, most of the cells of wing 

 twice as long as broad, no true intercalaries. 

 Expanse 16 mm. 



Callibaetis nigrivenosa, sp. nov, 



Tijpe.— M. C. Z. 10,057. Ecuador: Huigar, 4,500 ft., 17 June. 

 H. S. Parish. One specimen. 



Rich dark brown ; abdomen near tip with pale on sides of segments ; 

 legs pale. Wings with a faint dark tinge, very deep and prominent 

 on apical costal area; all veins very dark brown or nearly black; 

 margin with two moderately long intercalaries in each space; about 

 10 or 12 cross-veins in costal area; two series of discal cross-veins, 

 about 5 or 6 in the inner series, about 15 in outer series, but none of 

 these anywhere near margin, many as near to inner series as to margin. 



Expanse 24 mm. 



Callibaetis signata, sp. nov. 



Ttjpc— M. C. Z. 10,058. Ariz. : Williams, 24 July. H. S. Barber. 

 Two specimens. 



9 Pale brownish; scutellum pale in middle; abdomen dotted; 

 setae pale, with the joinings dark; legs pale, tarsi and tibiae at tips 

 rather darker. Wings hyaline, longitudinal veins brown, cross-veins 

 hyaline, none near the hind margin; various pale brown spots along 

 costal region but not forming a continuous stripe; several costal dots, 

 a basal streak, one just before middle of wing on subcosta and radius, 

 and three or four beyond, several other brown spots. 



cf Rather darker brown, the abdomen shows above two large pale 

 spots, one over the penultimate segment, and the other on the third 

 segment before the last, between these spots the dorsum is nearly 

 black; venter finely dotted. Wings hyaline, no spots, longitudinal 

 veins brown, others hyaline. 



Expanse 15 mm. 



