996 MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA. [Dec. 3. 



transversely at a little distance from the apex, of which the outer 

 one is elongate, black. Underside and legs flavous, breast black. 



Hab. Costa Rica. 



Var. The round spots on the elytra replaced by short longitudinal 

 stripes. 



28. DlABROTICA COSTATIPENNIS, Sp. nOV. 



Elongate, uniform rufo-flavous. Thorax deeply bifoveolate, shining. 

 Elytra closely rugose, punctate, with five or six elevated more or 

 less distinct longitudinal costse. 



Length 3 lines. 



Head perfectly smooth and shining, with a deep fovea above the 

 antennae ; the latter of half the length of the body, the second and 

 third joints very short, the fourth joint more than twice as long as 

 the preceding one, ferruginous, the first three joints shining, the 

 rest opaque. Thorax distinctly margined, narrowed at the base, the 

 surface with two deep foveae, very shining and impunctate, rufo- 

 flavous. Elytra scarcely widened behind, with a distinct margin 

 which is wider in the middle than on either end ; surface closely 

 punctate and finely rugose ; each elytron with about six longitudinal 

 raised costse, which are a little more obsolete near the apex and the 

 base, of a little lighter rufous colour than the thorax. Entire 

 underside and legs flavous, the breast covered with whitish 

 hairs. 



Hab. Costa Rica. 



29. Cerotoma nigrofasciata. 



Oblong, widened behind, black. Thorax and legs flavous. Elytra 

 dark red, with three broad transverse black bands. 



Length 3| lines. 



Head black, vertex punctate ; lower part of face coarsely and 

 deeply punctate, with a few flavous hairs ; antennae closely approximate, 

 of half the length of the body, with the first joint very long, the 

 second short, the third longer than the fourth, of a flavous or fer- 

 ruginous colour. Thorax transverse, the sides much deflexed, the 

 lateral margins much widened before the middle, anterior angles 

 obsolete, posterior ones produced but rounded ; the surface rather 

 convex, smooth, indistinctly depressed on the disk, of a light flavous 

 colour. Scutellum black. Elytra much widened towards the apex, 

 deeply and closely punctate, the intervals raised in irregular longi- 

 tudinal costae and transverse wrinkles, of a dark red colour ; a trans- 

 verse band common to both elytra at the base, another band slightly 

 arched in the middle not reaching the suture, and a large triangular 

 patch near the apex black ; none of these bands reach quite to the 

 lateral margins. Underside black, shining ; legs uniformly flavous. 



Hab. Costa Rica, Guatemala. 



