126 FAiCILT IT. CAEABirX. 



KET TO SPECIES OF GBOVP C. 



a. Color greenish or bluish, base of anteunse, palpi and legs reddish-yel- 

 low : base of thorax not cylindrical, 

 b. Basal Imiiressions of thorax deep. 



c. Thorax with the basal half distinctly narrowed, the Impressi.iu- 

 lonff. curved ; color purplish or dull green. 



^6. EXTE:;fsicoLus. 

 cc. Basal portion of thorax nc>t distinctly narrowed, the impressions 

 shorter, less curved ; thorax and elytra bright green. 



206a. var. veridi-;. 

 66. Basal imi'iessions small, narrow: thorax and scutellum reddish-yel- 

 low. 207. DECOBUS. 



aa. Color piceous or reddish-brown ; base of thorax sulK-ylindrical ; elytral 

 intervals convex, marked with a row of small punctures, each punc- 

 ture bearing a fine hair. 20S. pusiixrs. 



2iX; (772). Platyxus extexsicoixis Say, Trans. Amer. Phil. Soa, II. lS2a 

 54: ibid. II. 47S. 

 Elongate, slender. Head and thorax greenish or bronzed, shining; 

 elytra dull greenish or purplish. Base of thorax finely punctured, the im- 

 pressions with a small, blunt tubercle on the outer side near the hind 

 angles, the latter obtuse. Elytral striae shallow, not punctured; intervals 

 slightly convex, alutaeeous. the third with four or five small, remote punc- 

 tures. Length S-9.5 mm. 



Shores of Fish Lake, Steuben CoiTnty : frequent. Lake CoTinty 

 by Wolcott. :March 26-Juh- 19. 



*206a (772b). Piatyxus extexsicollis tibidis Lee., Ann. Lye. Nat. Hist.. 

 IV. 1S4?. 222. 

 Differs from the preceding mainly as mentioned in key. Head some- 

 times blackish-green. Thorax with hind angles more rounded and the basal 

 impressions without tubercles. Varies in depth of elytral stri:e and con- 

 vexity of the Intervals ; in some specimens the stri* are finely punctured. 



Throughout the State ; rather common beneath rubbish in damp 

 localities. Hibernates. February- 21-Xovember 28. 



*207 177:^^. Pi.\tyxis decobus Say. Trans. Amer. 

 Phil. Soc., II. 1S2:3. 53; ibid. II. 477 

 Elongate, slender. Head green or greenish-bronze: 

 thorax, scutellum, legs and base of antennae reddisli- 

 yellow ; elytra blackish, often green near margins. 

 Thorax a little longer than wide, slightly narrowed 

 at base, hind ansles obtuse: elytral striae shallow, not 

 punctured ; intervals slightly convex, finely alutaeeous. 

 distinctly punctured, the third with five to seven small 

 dorsiil punctures. Length 7.7-S.o mm. (Fig. 75. > 



Throughout the State, but scarce. Hiber- 



Fig. 75. 4. (OriKinaL) nates. Febriian" 8-October 23. Occurs be- 



