HANCOCK 87 



(1887); McNeil, Psyche, VI., 77(1891); Brun., Publ., Nebr. 

 Acad. Sc, iii, 28 (,1893); Blatchl., Can. Ent., XXVI., 219, 

 220 (1894); Ashmead, Ins. Life, VIII., 26 (1894); Blatchl., 

 Can. Ent., XXX., 64 (1898); Scudd., Cat. Orth. U. S., 16 

 (1900); Scudd., Index N. Ainer. Orth., 317 (1901). 



TETTIX OBSCURUS, HANC. 



Plate v., Figs. i-2a. 

 Figure on title page. 



Allied to arcnosus, body more robust. Vertex viewed from 

 above fully twice the width of one of the eyes, little depressed 

 anteriorly, advanced a little beyond the anterior margin of the 

 eyes, the front margin subtruncate or scarcel}' convex, later- 

 ally angularly curved into sides, lateral margins subparallel, 

 on either side of median carina longitudinal!)- shallowly fossu- 

 late; median carina of vertex barel}' distinct anteriorly, pro- 

 jecting very little or scarcely at all from the middle of the 

 anterior border, occiput behind the eyes naked, crown of head 

 in profile nearly or about level with the superior margin of the 

 eyes. Frontal costa in profile advanced beyond the eyes equal 

 to about one-fourth the diameter of one of them, distinctly 

 sinuate between the lower portion of the eyes, between the 

 antennae convexly protuberant; at the junction of the frontal 

 costa with the median carina of vertex projecting before the 

 eyes in the form of a small angulate eminence, the apex 

 obtuse; viewed in front the frontal costa moderately fur- 

 cate, the rami very gradually diverging or subparallel towards 

 the median ocellus. Eyes a little prominent, of medium size. 

 Antennre slender. Pronotum truncate anteriorly, strongly con- 

 stricted before the shoulders, posteriorly long subulate acute, 

 process passing the posterior femora, not extended so far as 

 the wings; dorsum between the shoulders moderately broad, 

 transversely flattened, subconvex, humeral angles strongly 

 prominent, posteriorly between the carinae distinctly flattened; 

 median carina of pronotum not distinct, in profile nearly hori- 

 zontal, interrupted and frequently presenting very small undu- 

 lations, anteriorly a little higher over the constricted portion 



