80 PROCEEDINGS OF THE ACADEMY OF 



Antennse 11 -jointed. 



Elytra finely seriate-punctate, interstices not costate. Stenispa. 



Elytra punctate-striate, alternate interstices costate. Odontota. 



Antennae 8-jointed, joints 9-11 connate. MicrorJiopala. 



Stenispa. 



1. S. metallica (Fab.). Baly, Cat. Hisp. p. 13 ; brevicollis (Rand.) Bost.,J. ii. p. 48. 



[Languria !] 



Elongate, linear, teneous; anteiinre black; thorax very finely and 

 sparingl}^ punctulate. L. .23. Middle States. 



2. S. collaris, Baly. 



Very similar to the preceding but longer, thorax entirelj' red, 

 elj'tra more finelj^ punctate. L. .25. Indian Territory (Horn). 



Odontota, Chev. 



A. El}'tra 10-striate, interstices costate ; at least at base and apex. 



2d and 3d interstices not costate. omogera. 



3d interstice not costate. 



3d and 4tli pairs of stria regular. 



Sides of thorax and humeral angles of elytra orange. 



scapularis. 



Thorax red, disk and elytra black.* notnta. 



Thorax and elytra red, suture black. HarrisU. 



3d and 4th pairs of stria confluent in the middle. bicolor. 



3d interstice costate at base and apex, elytra dilated behind, quadrata. 



B. Elytra 8-striate. 



Elytra broad, subtruncate, pale, varied with fuscous. rosea. 

 Elytra narrow linear, black, or metallic. 

 Thorax longer than broad. 



Entirely black or greenish-black. nigrita. 



Thorax red, front and hind margin black. Ariadne. 



Thorax transverse, red, front and hind margin black. Lecoiitii. 



1. 0. omogera, sp. n. 



Elongate, black, dilated behind, sides of thorax and humoral 

 angles of elytra red; antennje with the 3d joint elongate; elytra 

 regularly and deeply punctate striate; 2d and 8th interstices cos- 

 tate; apical margin deeply and unequally acutely dentate. L. .31. 

 Tampico (Mexico). 



2. 0. scapularis, 01. Etit. vi. 760, pi. ], 13; lateralis, Say, J. Acad., iii. 431. 



Black, sides of thorax and humeral angles of elytra red, the latter 

 broad; apex rounded, serrate, deeply striate punctate, alternate 



