140 JOHN HAMILTON, M. D. 



350. Tarsostenus univittatus Rossi. aJbofascJatus Mels., Tillus picipenni^ 

 White. 



This is a cosnio])()litan species wliich has occurred at a few jjlaces 

 in North America. Pennsylvania, Mehhehner ; Texas, LeConte. 

 Pr. 187a, 884 ; An. Lye. v, 17 ; J. A. iv, 36. 



351. Laricobius Erichsoni Eos., riibidi(s Lee. (C. 220) 



District of Columbia under the bark of a conifer, LeConte; De- 

 troit and Marquette, Mich., Schwarz; Ottawa, Harrington; my 

 specimens are from Massachusetts, Blanchard. Europe (the Alps). 



352. Necrobia ruflpes DeG. 



This species and the two followinir are well known cosmopolites. 

 Rufipes is found from Florida to Vancouver, and throughout Europe 

 and Siberia. It is the notorious ham beetle, the pest of pork pack- 

 ing establishments, and the occasion of an interesting law suit. Riley, 

 Missouri Rep. vi, 96 ; Heyden, loO. 



353. N. ruflcollis Fah. 



This sjiecies is as widely distributed as rnfipps, extending to Alaska. 

 It does not seem to have occurred in Siberia. It lives mostly on 

 carcasses. This beetle has attained celebrity as instrumental in saving 

 tlie illustrious Latreille from transportation and consequent death. 



354. N. violaceus Linn. 



This species occurs nearly everywhere in North America, and is 

 probably native as well as introduced, since it is spread over eastern 

 and western Siberia Europe generally. An. Lye. iv, 162; Col. 

 Am. 113; Heyden, 130. 



PTINID^. 



The species of this family here catalogued have been introduced 

 from Europe, with perhaps one exception, being transported from 

 place to place in articles of commerce. 



355. Gibbium scotias ,'^cop. 



My s|)ecimens of this cui'ious species are from New Orleans, 

 Louisiana ; Charleston, S. C, Horn. Central and southern Europe 

 in old buildings. 



356. Trigonog-enius g-ibboides Boisl. 



Found depredating on j)lants in the Calif Acad. Sciences, Hirfurd 

 III Hit. Europe. Sicily. Corsica. Algeria. 



