OMUS AND ClCINDELA 7 



A Form nearly as in montanus but rather more slender and frequently 

 brownish in color, the sculpture similar throughout; prothorax 

 shorter and more transverse, relatively more narrowed at base; 

 hind tarsi shorter and more slender. Length (9 ) 16.8-17.8 mm.; 

 width 5.8-6.0 mm. California (Placer Co.). One specimen 

 received at the same time as the preceding and another from a 



different source brunnescens Csy. 



3 Form stouter, the hind body shorter, more dilated and with more 

 arcuate sides than in montanus, very faintly brunnescent; head 

 similar but with still feebler rugulosity; prothorax only a fourth 

 wider than long, finely rugulose and with some extremely minute 

 punctulation, the anterior transverse impression conspicuous; elytra 

 scarcely more than one-half longer than wide, very evenly oval, 

 with evenly arcuate sides, widest at the middle; punctures fine and 

 well separated even on the flanks. Length (c?) 17.0 mm.; width 



6.2 mm. California (Lake Tahoe) edwardsi Cr. 



A Larger than edwardsi but otherwise very similar, except that the 

 prothorax is slightly more transverse and the fine rugulosity of 

 the pronotum distinctly stronger, with more shining interspaces; 

 labrum with the median lobe strong, more abruptly truncate at 

 the tip of the lobe than in edwardsi; elytra more elongate though 

 evenly oval, with arcuate sides, the punctures rather small and 

 well separated but stronger than in edwardsi, the scattered foveae 

 much more distinct than in that species, where they are unusually 

 feeble and indistinct. Length (cf 1 9 ) 15.8-18.5 mm.; width 5.5- 

 6 7 mm. California (Placer Co.). [0. lucidicollis Csy.]. 



lobatus Csy. 



In the above described topotype of edwardsi, the seta at each 

 side of the epistoma is at the middle of the length and there are 

 four long stiff setae above each eye, a condition which is however 

 unstable in the genus. Lucidicollis cannot be maintained even 

 as a well denned variety and must be united with lobatus. 



Group IV (parvicollis) . 



The general habitus in this group, due to the very elongate form, 

 small prothorax and fine sparse elytral punctures, is altogether 

 different from that of any other type of the genus; the various 

 units seem to be confined to the southern Sierras, in and near 

 Tulare Co. Those known thus far are the following: 



Body very slender, elongate, convex, deep black and subopaculate; head 

 subequal in width to the prothorax, moderately though distinctly 

 rugose, the median part of the front smooth and not punctate; 

 apical part of the mandibles very long and slender; prothorax as 

 long as wide (cf ) to slightly wider than long (9 ), barely more than 

 half as wide as the elytra, the sides converging from near the apex 



