544 Goleopterological Notices, V. 



broadly, feebly impressed ; stria obsolete. Prothorax nearly twice as wide as 

 long, the sides moderately convergent from the base, more convergent and 

 rounded near the apex ; fine marginal stria abbreviated behind the middle, 

 the two marginal punctures distinct; outer lateral not entire; inner slightly 

 uneven, subentire ; ante scutellar stria well developed. Elytra one-half longer 

 than the prothorax, and, at basal third, where the sides are slightly promi- 

 nent, distinctly wider ; apex broadly rounded, feebly oblique ; inflexed flanks 

 flattened, uneven, strongly but not densely punctate ; outer series of punc- 

 tures distinct, the interstrial row distinct ; outer humeral very oblique, with 

 an appendage ; inner humeral distinct, not extending to basal third ; sub- 

 humeral not extending to the base, with a short oblique inferior appendage 

 at the basal end ; first three dorsals strong, entire ; fourth obsolete in basal 

 half; fifth and sutural represented by disconnected subapical punctures ; there 

 are also several short uneven oblique striae along the apex of each elytron, of 

 which one between the first and second dorsals is especially distinct. Pijyidia 

 densely evenly and not very coarsely punctate. Prosternal lobe broadly 

 rounded, strongly margined, finely, closely punctured ; mesosternum broadly 

 sinuate in median third, the stria deep and entire. Anterior tibise with four 

 strong, widely spaced teeth, of which the apical is bifid, and two minute sub- 

 basal denticles ; posterior with series of spinules on the acute edge, the outer 

 series feeble, irregular and in great part discal. Length 7.5 mm. ; width 

 5.3 mm. 



Utah. 



This appears to be quite an isolated species of large size ; it forms 

 a satisfactory transition to the next group. 



Group Foedatiis. 



This group is really a part of the preceding, the characters 

 throughout being similar, except that the external of the lateral 

 thoracic striao is more or less decidedly abbreviated, being some- 

 times altogether wanting ; the extent of this stria is however a 

 variable feature, and it is always more or less inconstant even 

 w^ithin specific limits. Tiie species are all intense black and pol- 

 ished, and generally smaller than the allies of merdarius ; they 

 are also more closely allied among themselves. Those known at 

 present may be thus distinguished : — 



Outer lateral stria of the pronotum distinct, though much abbreviated. 



Sutural stria generally longer than the fifth dorsal and attaining the middle. 

 Form narrowly oval, the punctures of the propygidium coarse and strongly 



umbilicate IlltlbilicatllS n. sp. 



Form broadly oval, the propygidial punctures fine and very dense ; 

 elytral striae much coarser fcedatlis Lee. 



