117 



Riley, Stand. Xat. History., II., 1884, L87. 

 Comstock, Int. to Ent., I., 1888, 115. 

 Fernald, Orth. N. Eng., 1888, 23. 

 McNeill, Psyche, VI., 1891, 2:;. 

 Smith, Ins. N. Jer., 1890, 410. 

 Redtenbacher, Monog. der Conoceph., 1891, 89. 

 PI. III., fig. 3(i. 



A larger and thicker bodied species than either of the preceding; and 

 the wing covers broader. Cone of the vertex more like that of C. ensiger 

 but shorter, with the apex more obtuse ; the frontal basal spine distinct 

 but blunt. Posterior femora armed beneath on both carina? with a num- 

 ber of rather weak spines. Wings of male equalling the tegmina in length, 

 in the female a little shorter. Ovipositor shorter than in either of the 

 above species. General color either pea-green or dirty brown* or a mixture 

 of both. The cone rarely with a black spot at apex, its sides often with a 

 narrow yellowish line. 



Measurements: Male— Length of body, 30 mm.; of tegmina, 44 mm.; 

 of hind femora, 23 mm.; of pronotum, 8 mm.; of cone, 2 mm. Female- 

 Length of body, 31 mm.; of tegmina, 48 mm.; of hind femora, 26 mm.; of 

 ovipositor, 26 mm. 



This species seems to be an inhabitant of sandy districts and occurs 

 only along the Atlantic sea coast and the shores of the Great Lakes. In 

 Indiana it has been noted only in Lake county, where. Prof. E. E. Slick 

 found it quite frequently along the shore of Lake Michigan during Sep- 

 tember and October. Of the specimens sent to me — a half dozen males- 

 he wrote : They were caught off of trees, in the dusk of the evening, aa 

 they were singing. They sang (" whetted") continuously for ten minutes 

 or longer while I watched them. 



Mr. Scudder thus describes the note as heard in New England: " Ro- 

 bustus is exceedingly noisy and sings equally, and I believe similarly, by 

 day and night. The song resembles that of the harvest fly, Cicada canicu- 

 laris. It often lasts for many minutes, and seems, at a distance, to be 

 quite uniform ; on a nearer approach one can hear it swelling and decreas- 

 ing in volume and it is accompanied by a buzzing sound, quite 

 audible near at hand, which resembles the humming of a bee or the dron- 

 ing of a bagpipe." 



■■C. ensiger is said also to be thus dimorphic in coloration, but all that I have seen from 

 this state are of the green variety. 



