220 PROCEEDINGS OF THE NATIONAL MUSEUM vol.99 



also four smaller teeth, three situated between subapical pair and apex 

 of tibia, the fourth based of the submedian tooth. Hind tibiae paler 

 than femora, serrated on inside, curved and bearing white and dark 

 hairs, tarsi with first two segments ferruginous and the last two 

 yellowish, all covered with white hairs. 



Lenth 2.00 mm. ; width 1.39 mm. 



Type.—V.S.'NM. No. 58191. 



One specimen. Las Mercedes, Santa Clara, Costa Rica, 200 to 300 

 meters, collected by F. Nevermann, December 1921. 



Extremely close to T. curvicrus Champion but differentiated in the 

 placing of the hind femoral teeth. The present species has four teeth, 

 a pair close to apex, one more or less in the middle, another at the basal 

 third ; there are several others almost reduced to tubercles. 



Differentiated from T. femoralis Monte by the shape of the femora. 



TACHYGONUS LATICRUS Champion 



Two specimens, Coronado, Costa Rica (1,400 to 1,500 meters), col- 

 lected by F. Nevermann, May 24, 1925, on leaves of Inga edulis. 



This species is of the same group as guerini Monte and bondati 

 Marshall. It is distinguished from guerini by its smaller size, fewer 

 teeth on posterior femora, and by its shorter and stouter tibiae. 



Length 2.39 mm.; width 1.91 mm. 



TACHYGONUS FERRUGINEUS, new speciea 



Figure 27 



General color ferruginous; fore and middle legs yellowish; hind 

 legs dark brown. Rostrum of same color as elytra. 



Head slightly darker than prothorax, upper surface with some fine, 

 longitudinal punctate striations, flanks with white scaling and with 

 pitting which becomes somewhat denser close to eyes. Antennae 

 ferruginous, with whitish club. 



Prothorax with wide and shallow pits; flanks of pro-, meso-, and 

 metathorax covered with pectinate white scales. Elytra and dorsum 

 of prothorax with long, erect, yellow hairs. 



Elytra wide and flattened, shoulders slightly produced ; besides the 

 hairs strong setae are present, some of the setae fringing external 

 margin of elytra; postscutellar region with a few white scales. 



Posterior femora very long, dark brown, lighter at base, granulose, 

 with a pair of subapical teeth, and a smaller submedian tooth, and 

 also a series of small teeth along inner edge; tibiae spatulate, dark, 

 paler at base, the external margin with a series of four to five rigid, 

 erect setae, the internal margin with abundant hairs. Hind femora 

 and tibiae with various white and brown hairs. Hind tarsi with first 



