Cjje Canadian (SntomolopL 



VOL. XII. LONDON, ONT., NOVEMBER, 1880. No. 11 



NOTES ON ORTHOPTERA. 



BY PROF. CYRUS THOMAS. 



CEdipoda obliterata, nov. sp. 



Male and female. Length to tip of elytra 1.50, to tip of abdomen 

 1. 10 to 1.30. Pale reddish-brown or dull yellowish tinged with rufous, 

 with irregular transverse bands of dark fuscous spots. 



Occiput not prominent. Vertex broad, moderately deflexed, margins 

 with sharp carinte forming a distinct sub-quadrate, median foveola, which 

 is divided into two equal sections by a distinct longitudinal, median car- 

 ina that extends back part way upon the occiput ; sides of the foveola 

 parallel between the eyes, and bending abruptly inward toward the 

 fastigium in front, continuous with the sides of the frontal costa ; fastigium 

 with a double indentation. Frontal costa slightly sulcate, sub-tricarinate 

 at the fastigium, widening at the ocellus and extending nearly or quite to 

 the clypeus, but not expanding below ; in the male the width is about 

 uniform throughout. Pronotum with the median carina sub-cristate, dis- 

 tinctly and deeply notched about the middle by the posterior sulcus ; 

 anterior portion irregularly arched, more elevated than the posterior por- 

 tion, which has. only the front part arched • lateral carina irregular and 

 indistinct ; the notch of the median carina is of the oblique type, more 

 distinctly so in the male than in the female. Posterior lobe expanding 

 rapidly from the posterior sulcus ; nearly flat on the disk, which is more 

 or less covered with elongate rugosities, more distinct and numerous in 

 the female than in the male ; posterior extremity obtuse-angled ; anterior 

 margin extended in a very obtuse angle upon the occiput. Elytra extend- 

 ing about one-third their length beyopd the abdomen, of medium width, 

 sinuous and obliquely excised at the tip. Wings narrow, the length very 

 nearly twice the width, and slightly undulate on the outer margin ; the 

 nervules unusually regular and straight. Posterior femora with sharp and 

 elevated carinae above and below. Antennae rather short, scarcely flat- 

 tened and very slightly accuminated at the tip. 



