580 Mr. O. E. Janson on American Cetonncla3. 



The female has the dark markiugs on the upper side better 

 defined, the clypeus, underside and legs shining black, irrorated 

 with cinereous, is more strongly punctured beneath and has 

 tAVO teeth on the anterior tibiae. 



Balzar Mountains, Ecuador (lUingworth). 



Allied to G. lu'hraica, Drap., smaller, broader and less con- 

 vex, less punctured above and differently marked. 



Gymnetis baharica, n. sp. 



$ Deep black, opaque, elyti-a with the external margins and 

 numerous irregular, confluent, transverse marks pale yellow. 

 Head sparsely and finely punctured, clypeus qiiadrate, the apex 

 elevated and sinuous. Thorax with scattered fine punctures at 

 the sides, the posterior angles acute. Elytra with obsolete rows 

 of punctures on the disc, the suture elevated behind and slightly 

 produced at the apex ; epimera large, with a shining tubercle. 

 Pygidium finely strigose with sparse short pubescence. Beneath 

 sparsely punctiu-ed at the sides, mesosternal process large, bent 

 down, obtuse at the apex and shghtly prominent in front; anterior 

 coxaj with brown hairs, the tibiae with two small teeth. Length 

 21-24 mm. 



The female is shorter and broader, more strongly punctured, 

 with the clypeus, underside and legs shining and the teeth on 

 the anterior tibia; larger. 



Balzar Mountains, Ecuador (lUingworth). 



This fine species belongs to the holosericea gi'oup, and varies 

 considerably in the extent of the yellow markings on the elytra, 

 which in some specimens are so extended as to leave only the 

 suture and a few small spots of the ground colour, the thorax is 

 often marked with several small obscure yelloAv spots. 



