126 FAMILY IT. CARABIIL^. 



KEY TO SPECIES OF UROl P C. 



«. Color greenish or bhiisli. base of ;iiitonn;o, palpi and legs reddish-yel- 

 low; base of tlKn-ax not fyiin(iric:il. 

 h. Basal impressions of thorax deep. 



c. Thorax with the basal half distinctly narrowed, the impressions 

 long, curved ; color purplish or dull green. 



206. EXTENSICOLLIS. 



cc. Basal portion of thorax not distinctly narrowed, the impressions 

 shorter, less curved ; thorax and elytra bright green. 



206a. var. viridis. 

 hh. Basal impressions small, narrow; tliorax and scutellum reddish-yel- 

 low. 207. DECORUS. 

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

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

 ture bearing a fine hair. 208. pusillus. 



206 (772). Platynus extensicoij.is Say, Trans. Amer. Phil. Soc, II, 1823, 

 54 ; ibid. II, 478. 

 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 stritB shallow, not punctured; intervals 

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

 tures. Length 8-9.5 mm. 



Shores of Fish Lake, Steuben County ; frequent. Lake County 

 by Wolcott. March 26-Ju.ly 19. 



*206a (772b). Platynus extensk:ollis viridis Lee, Ann. Lye. Nat. Hist., 

 IV, 1848, 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 striae and con- 

 vexity of the intervals ; in some specimens the striae are finely punctured. 



Throughout the State ; rather common beneath rubbish in damp 

 localities. ITibernates. February 21-November 28. 



*207 (773). Pi.ATYNUs DECORUS Say, Trans. Amer. 

 Phil. Soc, II, 1823, 53; ibid. II, 477. 

 Elongate, slender. Head green or greenish-bronze ; 

 thorax, scutellum, legs and base of antenme reddisli- 

 .vellow ; elytra blackish, often green near margins, 

 riiorax a little longer than wide, slightly narrowed 

 at base, hind angles obtuse; elytral striae shallow, not 

 punctured ; intervals slightly convex, finely alutaceous, 

 distinctly punctured, the third with five to seven small 

 dorsal punctures. Length 7.7-8.5 mm. (Fig. 75.) 



Throu£?hout the State, but scarce. Hiber- 

 Fig, 75. - 4. (Original.) natcs. Fcbruarj^ 8-October 23. Occurs be- 



