1889] MARYLAND ACADEMY OF SCIENCES. 43 



pale testaceous. Legs and tarsi spotted with fuscous. Prono- 

 tum a little pale about the margins. Pectus hairy, unevenly 

 fuscous, marked with a white spot above the orifice of the 

 mesothoracic spiracle. Underside chiefly paler than above, 

 sometimes testaceous, or white on the posterior coxae. Wing- 

 covers ashen gray, with chiefly black veins, the veins of the 

 costal and inner border coarsely interrupted with white, while 

 those of the discal portion are minutely specked with white. 

 Anal and genital segments more or less rusty yellow. Length 

 to tip of wing-covers, 4J-5 millims ; to end of venter, 3J-4| 

 millims ; width of pronotum, l|-2 millims. This insect has 

 thus far been reported only from Los Angeles, California, from 

 which place several specimens have been referred to me for 

 examination by Mr. D. W. Coquillett. 



It is the most remarkable insect of the order which has yet 

 been discovered in North America. The wing-covers lack the 

 membranal area which is so often present in the insects of this 

 group, while the form of these organs and their type of vena- 

 tion lead to the Orthoptera of the group Acndidae, and thus 

 give us an ancestral type which might well be a remnant of the 

 old Fauna prevalent in the Rocky Mountain region during the 

 Tertiary period. 



CICADIDAE. 

 TiBicEN Latr. 



T. cupreo-sparsa. New sp. 



Form of T. siriatipes Hald. Dull piceous black, the upper 

 surface closely spread with minute brassy scales and short hairs, 

 the under surface more closely silvery pubescent, including 

 silvery scales on the pleurae and venter. Head normal, blunt- 

 triangular, with the median line grooved as far as to the anterior 

 ocellus, the latero-basal areas triangular, indented, and bounded 

 next the ocelli by a curved sulcus; vertex separated from the 

 front by a transverse impressed line, which terminates in an 

 oval impression behind each antennal lobe, base of upper part 

 of front orange yellow, the front blunter and more convex than 

 in T. siriatipes, bordered with orange, and deeply grooved on 



