F. C. BOWDITCH 495 



Homotyphus (Omototus) rosenbergii nov. sp. 



Stout, rufous, pubescent, thorax strongly narroweil from base 

 to apex, sides nearly straight, angles all prominent, hind obtuse, 

 elytra deeply punctate striate, smooth at apex, a wide dense 

 subbasal band of ashy sericeous pubescence extends nearh' to the 

 apex, beginning at about the apical quarter; the elytra! apex is as 

 clean as if trimmed with a knife, each elytron in a curve having 

 the apex smooth, and shining, also the base, body beneath, and 

 legs are polished rufous. 



Type. — Cachabe, Ecuador: k)w c, I, 1897, (Rosenberg). 

 Length 6 mm. 



Head with broad smooth transverse, ch'pcal groove and frontal tubercles, 

 and a smooth longitudinal carina on the vertex, remainder ])unctate pubescent; 

 antennae fairly well separated, short, stout, gradually incrassate to middle, 

 reaching just below the shoulder, the second joint globose, first and third 

 about equal and the longest of all; thorax with almost equate surface, dull, 

 punctate, pubescent, the base broadly sinuate; scutellum broad triangular; 

 eljrtra broad and stout, base emarginate, sinuate (fitting the thorax) a faint 

 transverse basal depression giving prominence to the scutellar region; the 

 pubescence from the depression to the smooth apical area is very dense and 

 thick, under the smooth surface the large punctures are regularly continued, 

 as well marked cells in longitudinal rows; front legs rather long and slender, 

 the middle femora with a small tooth near the base, the last joint of the tarsi 

 (especially noticeable in the anterior leg) deeply bilobed, hind femora very 

 stout, obtusely toothed near the apex, the tibia strongly curved at the base 

 dilated at the middle and straight, ending in a single strong tooth, claws 

 appendiculate. 



It is with doul)t I include this form in Omofotus but the genus 

 is very nondescript at best, and at present it seems better to 

 enumerate the forms rather than increase the genera. 



Homotyphus (Omototus) iridipennis nov. sj). 



Entirely castaneous thrown, anterior tibia and tarsi and an- 

 tennae nearly black, elytra punctate striate, thinly clothetl with 

 flavous pubescence and with an obvious faint metallic gloss. 



Type. — Cochabamba, Bolivia. (Germ.) Length a mm. 



Clypeus with a strong inverted V carina, ending just above the antennae, 

 in a deep, short longitudinal fovea, which in turn ends in a tr,insverse groove, 

 vertex thickly and rather coarsely punctate; antennae filiform, n^aching the 

 middle of the elytra, third joint the longest of all except the first ; thorax 

 transverse, sides margined, faintly sinuate at middle, angles all prominent, 

 faintly depressed antemedianly and obsoletely so on each side b(>hind, surface 

 thickly punctate, didl; elytra with scutellar and humeral calli obsoletely 



TRAXS. AM. KNT. SOC., XLI. 



