CARABID^; 35 



Comparing a male of sericeus from New York with a male of 

 perviridis Lee., from Siskiyou Co., California, a number of rather 

 radical differences become apparent; the size, for example, of 

 perviridis is smaller and the form more slender; the maxillary palpi, 

 legs and tarsi are relatively shorter; if not specifically different, 

 which I hold to be the case, perviridis is therefore, at any rate, a 

 well defined subspecies of sericeus. The following is apparently 

 another : 



Chlaenius sericeus ssp. uteanus nov. Form narrower and more 

 elongate than in sericeus, the elytra smoother; upper surface green, 

 changing to violet by very oblique illumination, shining anteriorly, the 

 elytra opaculate; head, antennae and palpi as in perviridis, the antennae, 

 as well as the palpi, shorter than in sericeus; prothorax differing from either, 

 being narrower and more elongate, nearly as long as wide, otherwise 

 similar, except that the punctures are not quite so coarse or close-set; 

 elytra differing from both in being more oblong and rectilinearly parallel 

 and in having the striae still finer and not in the least impressed even 

 basally, the punctures basally not more evident as they are in both 

 sericeus and perviridis; angle made by the basal and marginal beads more 

 acute than in either; under surface less closely or coarsely punctured than 

 in perviridis; anterior tarsi (cf) with the first three joints diminishing 

 less rapidly in width than in perviridis. Length (cf) 14.0 mm.; width 

 6.0 mm. Utah (Provo), YVickham. 



The type of this subspecies undoubtedly presents a different 

 appearance from the male of either sericeus or perviridis, but at 

 the same time, I have two examples that were also taken at Provo 

 by Wickham, that have a shorter prothorax and brighter green 

 color, though similar otherwise, and I regard them as identical 

 with uteanus; they differ in facies from perviridis, because of the 

 more oblong and less oval elytra. My series of the true sericeus 

 extends in locality from Rhode Island to Lake Superior and Arizona 

 and displays no very noticeable variability. 



The large series at hand show quite conclusively that leucoscelis 

 Chev., and cordicollis Kirby are distinct species; the former is 

 somewhat smaller in size and very much more slender in build, 

 of a deeper indigo-blue color and differs in numerous other minor 

 characters. The following are well defined species allied to leuco- 

 scelis and cordicollis respectively: 



Chlaenius gilensis n. sp. Body much smaller than in lencoscelis, 

 the elytra more parallel and more abbreviated; head nearly similar, the 

 eyes still larger and more prominent; antennae and palpi longer and more 



