628 Goleopterological Notices, VII. 



T. elongatus of Brendel, does not belong to the genus and is 

 therefore not included in the table. The American species of Ty- 

 rus all differ greatly from the European in having the anterior 

 femora carinate beneath ; mucronatus has, instead of the carina, 

 an acutely pointed spine ; it is therefore possible that Pytna may 

 be regarded as a valid subgenus, in view of the importance of 

 crural modifications in this part of the Pselaphidffi. 



T. carinifer. — Stout and convex, the body, legs and antennae very pale 

 rufo-testaceous throughout, the abdomen black with palish side margins; in- 

 teguments shining, subimpunctate anteriorly, the elytra and abdomen finely 

 punctate; pubescence moderately abundant, rather short and strongly recurved 

 as usual. Head scarcely as long as wide, only sliuhtly narrower but much 

 shorter than the prothorax, the eyes moderate in size, at more than their own 

 length from the base, the latter rounded ; surface flattened above, the fovese 

 normal. Antennae about }{ as long as the body, moderately stout, the club 

 gradually formed and not very stout; joints three to five distinctly, six and 

 seven barely perceptibly, longer than wide, the eighth quadrate; ninth slightly 

 elongate, the tenth almost as wide as long; eleventh obliquely pointed at tip. 

 Prothorax very slightly longer than wide, widest and obtusely rounded at the 

 sides before the middle, the sides thence convergent and nearly straight to the 

 apex, parallel and feebly sinuate to the base; apex nearly % of the maximum 

 width and about % as wide as the base; disk very convex, with a deep rounded 

 and pubescent fovea at each side near the base, the two connected by a fine, 

 transverse and posteriorly arcuate groove, which become slightly coarser but 

 not at all foveate at the middle, the surface thence to the base punctulate. 

 Elytra ^ wider than long, % longer than the prothorax and 2% times as wide; 

 humeri rounded, the sides thence rather strongly divergent and very feebly 

 arcuate to the apex ; discal impression very large toward base, disappearing 

 near apical third. Abdomen rather wider and a little longer than the elytra, 

 arcuately narrowed and serrate at the sides as usual, the border wide and flat; 

 basal carina well developed, extending to apical third of the basal segment. 

 Length 2.1 mm.; width 0.95 mm. 



Utah (southwestern). Mr. C. J. Weidt. 



The single male before me represents a very distinct form near 

 corticinus, but with a much larger head, narrower and more 

 elongate prothorax, more diverging sides and more punctate sur- 

 face of the elytra and relatively larger abdomen. The inter- 

 mediate tibise are slightly arcuate and somewhat thickened, the 

 corresponding trochanters with the usual long oblique process, the 

 anterior with a short conical process, and the anterior femora with 

 a long carina on the under edge, extending from basal fourth to 

 the middle. 



