388 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



enecl with crimson at various points, especially along- the cariuae, upon 

 either side of the labrum, along the clypeal suture and the margins of 

 the genae, besides a mediodorsal stripe on the vertex, and sometimes an 

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

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

 terior curve; antennae rather slender, apical ly acuminate, dark fusco- 

 plumbeous. Pronotum most sparsely pilose, light olivaceo-fuscous r 

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

 and crimson margining the lateral lobes of the metazonn, broadly 

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

 patch in the upper part of the lateral lobes of the prozona and along 

 the front margin of the same; metazona with crowded fine punctuation 

 and a slight median carina, the hind margin obtusangulate, the angle 

 rounded. Tegmina far surpassing the abdomen, rather slender, hyaline 

 on much more than the distal half, the veins pea-green ; wings nearly as 

 long as the tegmiua, with ample breadth, hyaline, 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- 

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

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

 between; hind tibiae and tarsi glaucous, the spines pallid glaucous with 

 black tips, eight in number in both sexes. Abdomen olivaceo fuscous, 

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

 and the dorsal carina marked with carmine; supraanal 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 deep 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 by the excision of the upper margin, the apical half or more sub- 

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

 infracercal plates concealed by the recumbent cerci; lateral margins of 

 the subgenital plate straight beyond the ampliate bases, the apical 

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



Length of body, male, 21 mm., female, 2G 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. 30) as found at Hance's in the Grand 

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



