388 riiOCEKDiyuS OF THE XATIOSAL MUSELM. Vi)L.xx. 



eued with crimson at various points, es|)eciiilly silon^ the carinae, ujjon 

 either side of the lalu'iiin, jilong the clypeal suture and tlie nuirgins of 

 the genae, besides a mediodorsal stripe on the vt rtex, and sometimes an 

 oblique genal streak, and touches hehind the eyes; eyes of female sub- 

 truneate anteriorly, the lower portion of their front with a distinct pos- 

 terior curve; antennae rather slen<ler, jipically acumiiuite, dark fusco- 

 plumbeous, rronotum most sparsely jjilose, l^ht olivaceo-fuscous, 

 the sulci marked with blackish fuscous, a mediodorsal crimson stripe, 

 and crimson marj^ining the lateral lobes of the nietazona, broadly 

 behind, narrowly beneath, besides touches in tlie center of an olivaceous 

 patch in the upper purt of the hiteral lobes of the prozona and along 

 the front Ti.argiii of the same; metazona with crowded fine i)unctuation 

 and a slight median carina, the hind margin ob^usang"late, the angle 

 rounded. Teginina fir .suri)assing the alxlomen, rather slender, hj aline 

 on nnu'h more than the distal half, the veins i>ea-greeu ; wings nearly as 

 long as the tegmina, with ample brcadtii. liyaline, the veins pale glau- 

 cous. Fore and middle femora yellow luteous, longitudinally and nar- 

 rowly striped with fuscous; hind femora yellow luteous, the outer face 

 and especially its lower half, excepting a pregenicular band, plumbeo- 

 fuscfms, the upper face crossed by four plumbeo fuscous bands — a basal 

 more or less obsolete, an apical covering the geniculation, and two 

 between ; hind tibiae and tarsi glaucous, the spines i)allid glaucous with 

 black tips, eight in number in both sexes. Abdomen oil vaceo fuscous 

 above, bright yellow beneath, the lower margins of the dorsal plates 

 an<l the (l<>rsal carina marked with carmine; supraaual plate of male 

 triangular with bluntly pointed apex, the surface with two rather dis- 

 tant, parallel, longitudinal, somewhat elevated but not very sharp 

 ridges, extending over the basal two thirds of the plate, inclosing 

 between them a rather broad, subequal, moderately ( eep sulcus which 

 does not continue to the apex; furcula consisting of two closely approxi 

 mated, rounded, little projecting lobes lying over the sulcus; cerci 

 moderately broad and laminate at base, rapidly tapering on basal half, 

 largely bj' the excision of the upper margin, the apical half or more sub- 

 cylindrical, very slender, equal, terminating bluntly, gently incurved; 

 iufracercal plates concealed by the recumbent cerci; lateral margins of 

 the subgenital plate straight bejond the ampliate bases, the apical 

 tubercle not elevated above its level, rather slight, bitid. 



Length of body, male, 21 mm., female, 20 mm.; antennae, male, 8.75 

 mm., female, 9 mm.; tegmina, male, 18,25 mm., female, 24.5 mm.; hind 

 femora, male, 10.5 mm., female, 13.5 mm. 



One male, 1 female. Bradshaw Mountain, Arizona, June 21, A. B. 

 Cordley (L. Bruner). 



The bright coloring of this species recalls that of Dactylotum. Pro- 

 fessor Bruner informs me that this was the species referred to by 

 Townsend in Insect Life (VI, p. oO) as found at Hance's in the Grand 

 Canon of the Colorado, 3,000 to 5,000 feet below the rim. As all the 



