204 NATHAN BANKS. 



darker, apex rather pale; last joint of palpi black; the median stripes on the 

 raesothoras run together; coxse I with two black spots on outside; femora with a 

 dark line above, and some black on tarsi ; abdominal stripes run together at base 

 as well as at the tip; venation of wings more maculose. the three cross-veins 

 basad of radial sector are mostly dark, and the dark on median vein is mostly 

 grouped in elongate spots; many small V marks on veinlets near tip of wing. 

 Male appendages pale, short, more divaricate than in B. sabulosus. Length 

 % , 28 mm. ; 9 > 21 mm. E.xpanse 40 mm. 



Lancaster, California (A. P. Morse). 



Brachyneiiiiirus centralis n. sp. — Face pale yellowish, a brown spot 

 enclosing antenuic. two dark transverse lines on vertex, the hind one often inter- 

 rupted in the middle, and a median dot behind ; tips of palpi dark, autennte pale 

 brown : prot borax with two broad submedian dark stripes, leaving a narrow yel- 

 lowish line, which iu the males has a projection in the middle, each stripe has in 

 its front part a distinct pale dot, sides with a shorter dark stripe, and the side 

 margin brown, rest of thorax mostly dark, with scattered pale dots, spots and 

 lines; legs pale, dotted with brown, often quite densely; abdomen dark, in the 

 % with an interrupted pale stripe on each side of the basal segments, last three 

 segments with a transverse pale spot in middle of each, and sometimes a dot at 

 tip; wings hyaline, veins mostly dark, interrupted with pale, some large clouds 

 along the median, at base of pterostigma and forming an oblique line (sometimes 

 indistinct) at end of anal and at end of median vein ; hind wings with veins 

 mostly dark, subcosta and radius interrupted with pale. Spurs as long as two 

 tarsal joints, wings moderately narrow, quite a number of costals forked; three 

 cross-veins basad of radial sector, six or more cross-veins connect anal to median 

 sector. Male appendages scarcely one-fourth as long as last segment, cylindrical, 

 divaricate, bristly. Length % , 4.3 mm. ; 9 , 27 mm. Expanse 60 mm. 



Mesilla, New Mexico, June (Mor.se) ; Estes Park, Colorado, 



August (Snow). 



Brachyiieiiiurus tenuis n.sp.— Face pale yellowish, a large brown spot 

 betweevi and enclosing antennse, and extending above from eye to eye, its upper 

 margin indented in the middle, vertex pale yellowish, with two depressed dark 

 dots near the middle ; antennse pale reddish brown, darker at tip ; prothorax pale 

 yellowish, with a brown stripe on each side reaching to the transverse furrow, 

 and the side margin brown, rest of thorax pale, with an interrupted brown stripe 

 each side, and a narrower one in the middle, sides pale, with several dark spots 

 near the coxae ; legs ])ale, tarsi with brown at joints, and a few brown dots on 

 hind femora; abdomen paler at base, darker towards tip, basal joints indistinctly 

 trilineate. a pale spot on middle of last three segments; wings hyaline, forks of 

 veinlets in hind part of fore wings marked with fuscous, median vein with about 

 22 quite large fuscous clouds, radius with a series of regular semicircular clouds 

 to the pterostigma, not as large as those of median vein ; basal part of radial 

 sector wholly pale, costal veinlets clouded at tip, and many forks in apical i)art 

 of wing clouded ; hind wings with small dark clouds along the radius, and the 

 median vein interrupted with dark, pterostigma whitish. Spurs as long as two 

 tarsal joints : wings moderately narrow, not very acute, only a few costals forked 

 before pterostigma, three cross-veins basad of origin of radial sector (four in one 

 specimen). Male appendages one-half as long as last segment, but slightly diva- 

 licate and upcurved, slender. Length % , 35 mm. Expanse 47 mm. 



