CICINDELIM; AND CARABID^; 17 



Remarks and Descriptions. 



4 There are at least three evident subgroups of the longilabris 

 type baseable upon longilabris, montana and perviridis. An ex- 

 ample from Manitoba in my collection is smaller and of narrower 

 form than longilabris and probably represents albilabris of Kirby, 

 a valid subspecies; laurenti is another subspecies of the longilabris 

 subgroup, being of a paler brown, denser and more opaque sculpture 

 and broader elytral markings ; the two forms described by Mr. Leng 

 are not at hand, but they also belong to the longilabris type without 

 much doubt. Of the taxonomic value of the following I am in 

 some doubt but will describe it as a species allied to longilabris: 



Cicindela ostenta n. sp. Rather smaller and with relatively shorter 

 and broader hind body than longilabris, bright green and rather notably 

 shining above, the legs and anterior part of the under surface green, the 

 abdomen and median part of the metasternum violet-blue, the last 

 segment of the former green; elytral markings as in longilabris. Length 

 (cf) 13-5 mm.; width 5.0 mm. California. 



This is probably the form that has hitherto been referred to as a 

 green longilabris, but there is strong reason to believe that it is a 

 true species rather than a subspecies, for the labrum differs greatly. 

 In the male of longilabris the apex of the labrum is sinuate, with a 

 stout tooth projecting from the sinus, the latter denned laterally by 

 obtuse but prominent teeth. In ostenta the labrum of the male is 

 strongly and almost evenly rounded at apex, with a tooth pro- 

 jecting from the middle but without further modification. 



Nebraskana is a subspecies of montana, similarly having shining 

 elytra with the punctures well separated among themselves and a 

 totally black labrum in the female, but the outline is more slender 

 and the size rather smaller. My three examples of montana came 

 from Lethbridge, Alberta, Canada, and have only a sculptural 

 indication of the middle band. I formerly thought that they were 

 nebraskana, but closer observation shows that this is not the case; 

 they agree exactly with the original description of montana. The 

 following is another subspecies: 



Cicindela montana ssp. canadensis nov. Smaller and much shorter 

 than montana, less shining, deep black throughout above and beneath, 

 the under surface strongly shining; labrum more oblique at the sides, 

 the apex narrower, the sinus deeper, the median tooth stronger, projecting 

 well beyond the dentiform sides of the sinus, the surface pale throughout 



T. L. Casey, Mem. Col. IV, Oct. 1913. 



