74 MEMOIRS ox THE COLEOPTERA. 



This species is distinguishable from persola by its smaller size 

 and more slender form, structure of the head and prothorax and 

 much longer elytra, and, from willametta, by the less transverse, 

 more parallel and laterally more evenly rounded prothorax and 

 less filiform antennae. 



Paradilacra glenorica n. sp. More slender than in any of the preceding, 

 moderately convex, nearly similar in coloration and sculpture, the legs piceo- 

 testaceous throughout; head slightly transverse, the eyes moderately con- 

 vex, at their own length from the base, the tempora parallel and nearly 

 straight to the basal angles, not at all more prominent than the eyes; an- 

 tennae feebly incrassate distally, the eighth joint nearly as long as wide, the 

 tenth perceptibly wider than long, the second and third much elongated, 

 the latter evidently the shorter; prothorax distinctly wider than the head, 

 though much less pronouncedly so than in any of the preceding, also only 

 slightly narrower than the elytra, transverse, the parallel sides subevenly 

 and moderately arcuate, slightly straighter basally, widest a little before 

 the middle, the basal impression very feeble; elytra distinctly transverse, 

 the suture very evidently longer than the prothorax; abdomen much narrower 

 than the elytra, slender, perfectly parallel, with straight sides as usual; 

 sterna nearly as in persola, the three basal joints of the hind tarsi gradually 

 and only moderately decreasing in length. Length 2.2 mm. ; width 0.48 mm. 

 British Columbia (Glenora and Kamloops), Wickham. 



This is the most slender of the four species and is rather more 

 parallel, the head being relatively better developed. Another 

 species of this genus is represented in my cabinet by a single very 

 immature individual from Napa Co., California. 



Tarphiota Csy. 



The most remarkable characters of this genus, among the other 

 allies of Atheta, are the form of the metasternum about the middle 

 coxae and the proportionally very long second antennal joint, which 

 is as long as the next two combined or very nearly. The middle 

 acetabula are not margined and defined by a sharp line as is almost 

 invariably the case, but are indefinitely limited in the metasternum, 

 the latter advancing between the coxae and forming an attenuated 

 apex, which gradually descends beneath the acute point of the meso- 

 sternal process, becoming more compressed but without trace of the 

 acute limiting line which usually defines the angulate metasternal 

 projection. There can be no doubt that Tarphiota is a genus dis- 

 tinct from A theta or any of its subgenera. The species are moder- 

 ately numerous and exhibit great diversity in size. They all in- 



