100 KANSAS UNIVERSITY SCIENCE BULLETIN. 



1. — Ceresa bubalus Fabr. Figs. 5, 7, 10, 87. 



Green when alive, turning to a tawny or an ochreous hue when dried. 

 Finely punctured with obscure whitish dots. Pronotum bearing later- 

 ally two large horns called suprahumerals, in front of the lateral angles. 

 These suprahumeral processes point outward but never upward; are dark 

 brown at the tips and along the upper margin as far as the union with the 

 prothorax. The metopidium rises perpendicularly from the head, but 

 slopes gently toward the sides, leaving an apparent carina down the 

 middle of the face of the metopidium. The metopidium slopes backward 

 as well as slightly upward, and, with the dorsal margins of the supra- 

 humerals, forms an equilateral triangle, the apex of which is at the 

 dorsal carina. Laterally, the suprahumerals slope inward and backward, 

 forming the lateral edges of the prothorax. The prothorax is produced 

 into a sharply constricted point at the posterior process. The prothorax 

 extends nearly to the tip of the tegmina but does not cover them laterally. 

 The sides of the pronotum slope inward and upward, meeting the dorsal 

 carina and forming a high tectiform hood. From the apex of the plane of 

 the metopidium, the dorsum slopes downward and backward until it 

 meets the sharp, black point of the posterior process. The pronotum, 

 caudad of the metopidium, possesses a strong median longitudinal precur- 

 rent carina, slightly piceous in spots. The lateral edges of the prothorax 

 are strongly carinated. The clypeus is not produced beyond the face but 

 the lateral edges continue the contour. Tegmina ta\vny but transparent. 

 The base of the clavus slightly coriaceous. Tibiae quadrangular. 



Length, 8 to 10 mm. Described from thirty specimens. 



HABIT.4T: Brownsville, Tex.; Buffalo, Colo.; Kansas City, Mo.; Man- 

 chester, Vt.; Douglas, Sedgwick, Finney, Graham and Rawlins counties, 

 Kansas; Eastern United States, Southern Canada, and extending west to 

 California. 



2. — Ceresa diceros Say. Figs. 6, 88. 



Prothorax brown, finely punctured and mottled or banded with light 

 tawny spots, usually two on each side, one pair about the middle of the 

 dorsum and the other pair near the posterior process. This process is 

 black and polished. The general shape of this species agrees with that of 

 Ceresa bubalus, but the suprahumerals are broader and thicker. The 

 front margin of the metopidium is not produced into an obtuse angle, but 

 the cephalic margin of the suprahumerals curves gently outward and 

 backward until near the middle of the front margin, when the line 

 abruptly proti-udes forward, producing a slight bump. The metopidium 

 is pilose and is tawny in color. Tips of suprahumerals black. 



Length, 8 to 10 mm. Described from seventeen specimens. 



Amyot and Serville described this species as C. post fasciata. 



Habitat: Colorado Springs, Colo.; Pennsylvania; New York; Nova 

 Scotia; Kansas City, Mo.; Douglas county, Kansas. 



3. — Ceresa taurina Fitch. Figs. 8, 9. 



Green when alive, turning tawny when dry. Agi'eeing in many particu- 

 lars with Ceresa bubalus, but the species is more slender and smaller. 

 Suprahumerals more acute, curving upward and a little forward, making 



