394 ANTHKIBID^. 



[LeConte. 



a very small emargination at the middle ; upper surface slightly uneven. 

 Eyes situated well up on the head, separated by a space not greater than 

 diameter of each, rounded, moderately convex, finely granulated. Anten- 

 nal cavities deep, small, near the tip of the beak, visible only from the side 

 or from beneath. Antennae half as long as the bodj'; first joint stoutly 

 clavate, second joint shorter, 3-8 each equal in length to the first, but more 

 slender ; ninth a little longer, gradually thicker externally, tenth trans- 

 verse, eleventh oval-pointed, the three forming an elongate but not com- 

 pressed club. Mentum with the lobes broadly rounded at tip. Prothorax 

 narrowed from near the base forwards ; ante-basal ridge strongly carved 

 each side, wiih the concavity directed backwards, so as to form an angle at 

 the middle, nearly touching the base, which is truncate ; near the sides 

 this ridge is flexed obliquely forwards, then on the sides it is bent forwards, 

 and runs somewhat obliquely as far as the middle ; the prothorax is deeply 

 channeled behind the middle, and this channel is crossed at its anterior 

 end by a short transverse impression. Elytra wider than the base of the 

 prothorax, base straight for two-thirds of its width, then obliquelj'^ back- 

 wards leaving a scutellar excavation. Scutellum small, elevated, with a 

 deep fovea behind. Disc of the elytra with a large elevation near tlie base 

 of the third interspace, which is also uneven behind ; the fifth and seventh 

 are slightly uneven behind the middle. The first joint of the tarsi is 

 longer, second triangular, emarginate, third a little narrower, bilobed; 

 claws simple, divergent. 



1. G. gibbosus, n. sp. 



Subovate, convex, black, without lustre, beak, and sides of head below the 

 eyes, densely clothed with fine white pubescence. Prothorax deeply chan- 

 neled from before the middle to the base, and with a short deep transverse 

 line at the middle ; the edges of the cruciform impression thus produced 

 are clothed with white pubescence ; broadly concave near the sides ad- 

 jacent to the transverse ridge. Scutellum white-pubescent. Elytra with 

 fine punctured striae and very densely finely punctured interspaces ; a large 

 saddle shaped spot of white pubescence extends from the middle forwards 

 becoming narrowed to the space between the third interspaces near the 

 base, which it attains ; there are also some smaller white and black pubes- 

 cent spaces behind the middle. Beneath pruinose with fine whitish pubes- 

 cence. Length 5 mm.; .30 inch. 



One specimen, Colorado. 



EURYMYCTER n. g. 



The well-known species upon which this genus is established, represents 

 in our fiiuna the European Platyr?mitis, but difl'ers by the beak being 

 narrower than the head and strongly dilated at the tip ; it is uneven above, 

 with three Avide grooves and two ridges, extending as far as between the 

 antennae, where they end, leaving the dilated part of the beak flat ; the 

 sides are extended over the antennal cavities, which are small and visible 

 only from the sides and beneath. The mandibles are flat, acute, and 



