1 68 MEMOIRS ON THE COLEOPTERA 



of the anterior tarsi is not much dilated but long, not quite equaling 

 the next three combined and evidently wider than the second, 

 perfectly nude beneath; joints 2-4 feebly diminish in size and 

 have beneath two series of large and upwardly inclined squamae, 

 the texture of which is longitudinal and quite unlike the trans- 

 versely strigose squamae of Gynandropus and the series are further- 

 more evidently separated and not contiguous as they are in that 

 genus; the middle tarsi differ scarcely at all from the posterior, but 

 seem to have a few feeble and scarcely discernible squamae beneath 

 joints 2-4, amid the spiniform hairs. In the female, the first joint 

 of the anterior and, to a less degree, that of the intermediate tarsi, 

 is much more strongly dilated than in the male, oval, narrowed 

 basally and truncate at apex, as long as the next three combined 

 and even somewhat more than twice as wide as the second on the 

 anterior pair, 1-4 nude beneath but with short sparse spines, 

 2-4 spinulo-setose laterally beneath and relatively much smaller 

 than in the male. The palpi are unusually inflated, the last joint 

 of the labial oval, truncate at tip and bristling with setae in a way 

 not so noticeable in most of the normal genera. The mental sinus 

 is edentate. The elytra have two series of setigerous punctures, 

 at the second and fifth striae, which do not seem to have been 

 observed hitherto. 



The species are rather numerous, those known to me, either in 

 nature or by description, being as follows: 



Posterior tibiae with series of spinules, the anterior with a fringe of coarse 

 hairs internally. [Stenomorphus in sp.] 2 



Posterior tibiae with rows of stout hairs replacing the spinules, the anterior 

 fringed internally with long dense white hair. [Agaosoma Menet.]. . 4 



2 Prothorax of the male more than three-fourths as long as the elytra; 

 body pale castaneo-rufous in color, the legs still paler; prothorax 

 parallel in anterior two-thirds, thence gently narrowed to the base, 

 the basal foveae feeble; legs rather long. Length (cf) 14.0 mm. 

 Mexico. (Guanajuato Dujes). [S. rufipes Bates nee Lee., the de- 

 scription drawn from the figure published on PI. 3, Biol. Cent. Amer. 

 I, Part i] bates! n. sp. 



Prothorax of the male never more than two-thirds as long as the elytra, 

 that of the female much shorter, three-fifths as long as the latter. .3. 



3 Body very slender as usual, black, shining; prothorax one-half longer 

 than wide, gradually narrowed posteriorly, the hind angles rounded, 

 briefly and deeply impressed at each side at base; elytra deeply 

 striate; antennae, palpi and legs obscure ferruginous. Length (o 71 ) 

 10.5 mm. Dr. Berlandiere's collection. [Description drawn from 

 the original (Proc. Acad. Nat. Sci., Phila., 1858, p. 59)].. rufipes Lee. 



