1 86 Memoirs on the Coleoptera 



different thing, which may take the name tritus (nom. nov.). The 

 true tenuis, or at least a species which agrees with the original 

 description in every respect, is represented before me by a mate 

 and female, also taken at Marquette by Sherman; it resembles 

 tritus in form and size, though a little stouter and more parallel, 

 but the prothorax differs greatly, being only a little wider than 

 the head, subquadrate and not rather strongly transverse as in 

 tritus, and it is completely devoid of the deep punctate anterior 

 transverse impression of that species, making its resemblance to 

 Pterostichus , where it was placed by LeConte, rather striking; 

 the elytral striae are less strongly punctate and become much 

 feebler apically; the first two joints of the anterior male tarsi are 

 similarly well dilated. 



Pheryphes n. gen. 



The four species tarsalis and serripes Lee, and sequoirarum and 

 spissitarsis Csy., form a group, distinguishable at once from the 

 other species constituting the genus Hypherpes, by their broader 

 and more parallel form and relatively larger head; in addition to 

 these features, the hind tarsi are relatively shorter and generally 

 much thicker, the joints more rapidly narrowed from apex to base. 

 The above name is proposed for these species. 



H3rpherpes Chd. 



A few additional undescribed species in this genus have come 

 to light recently and may be known by the following characters: 



Hypherpes lassulus n. sp.— Rather narrow and depressed, feebly 

 convex, brownish-black, the under surface and legs rufo-piceous; surface 

 only moderately shining, the elytra micro-reticulate; head two-thirds 

 as wide as the prothorax, narrowed behind the eyes, which are moderate 

 in size and prominence; anterior impressions rather deep, smooth; 

 antennae compressed, not quite as long as the head and prothorax, the 

 latter as long as wide, widest anteriorly, the sides broadly and subevenly 

 arcuate, gradually more oblique posteriorly, becoming broadly, feebly 

 sinuate basally, the angles right and sharply defined; transverse im- 

 pressions obsolescent, the median stria deep, not entire; fovese narrow, 

 feeble, elongate and smooth, traceable not quite to the middle, the 

 surface posteriorly thence to the sides feebly concave, with a fine and 

 feeble impression along the margin near the base, the latter broadly 

 sinuate medially, narrower than the broadly and deeply sinuate apex, 

 finely margined, the margin gradually obsolete medially; elytra three- 

 fourths longer than wide, two-fifths wider than the prothorax; humeri 



