232 BULLETIN 200, UNITED STATES NATIONAL MUSEUM 



MECOGNATHUS Wollaston, 1854, p. 595. [Synonym of Astenus.'\ 

 Oenotype : Mecognathus chimaera Wollaston. 

 Fixed by : Wollaston, 1854, p. 595, by monotypy. 

 Later citations : M. chimaera Wollaston, by Blackwelder, 1939, p. 119 ; 1943, 



p. 365. 

 Synonyms: (See Astenus). 

 Variant spellings : 



Mecognatus Fauvel, 1872, p. 134.*" 

 tiotes : The present disposition of this name is based on the study of Black- 

 welder (1939). 

 MECOGNATUS [Error for Mecognathus^. 



MECORHOPALUS Solier, 1849, p. 347. [Synonym of Aleochara.\ 

 Oenotype: Mecorhopalus elongatus Solier. 



Fixed by : Chenu and Desmarest, IS.")?, p. 18, by subsequent designation. 

 Later citations: M. curtulus (Goeze), by Fenyes, 1918, p. 23, not originally 



included. M. ater Solier, by Tottenham, 1939b, p. 228. 

 Homonyms by misidentification : 



Mecorhopalus of Fenyes, 1918=Copio^o. 

 Synonyms: (See Aleochara). 

 Variant spellings : 



Mecorkhopala Philippi, 1887, p. 37. 

 Mecorrhopalus Philippi, 1887, p. 37. 

 MicoRHOPAXus Bruch, 1915, p. 512. 

 MECORKHOPALA [Error for Mecorhopalus], 

 MECORRHOPALUS [Error for Mecorhopalus]. 

 MECRONA Blackwelder, new name. 



Oenotype: Mecrona algophila (Broun) (Calodera). 



Fixed by : Blackwelder, here, through objective synonymy with Calonotus, of 



which algophila had already been fixed as genotype. 

 Synonyms : 



Calonotus Cameron, 1945b, p. 171. [Objective. Not Agassiz, 1846.] 

 MEDOME Cameron, 1931, p. 188. 



Oenotype : Medome bicolor Cameron.. 

 Fixed by : Cameron, 1931, p. 188, by monotypy. 

 Later citations : M. bicolor Cameron, by Blackwelder, 1939, p. 119. 

 MEDOMONISTA Cameron, 1941a, p. 227. 



Genotype : Medomonista perplexa Cameron. 

 Fixed by : Cameron, 1941a, p. 227, by original designation. 

 MEDON Stephens, 1833a, p. 103. 



Oenotype : Mcdon ruddii Stephens. 

 Fixed by : Stephens, 1833, p. 273, by monotypy. 



Later citations : M. ruddii Stephens, by Westwood, 1838a, p. 17 ; by Shuckard, 

 1839, p. 104. M. castaneus (Gravenhorst), by Lucas, 1920, p. 395, not 

 originally included. M. ruddii Stephens, by Blackwelder, 1939, p. 119. 

 M castaneus (Gravenhorst), by Tottenham, 1940, p. 53, not originally in- 

 cluded. M. ruddii Stephens, by Blackwelder, 1943, p. 270, M. castaneus 

 (Gravenhorst), by Tottenham, 1949b, p. 367, not originally included. 

 Discussion : The citation of castaneus can be accepted only through the sub- 

 jective synonymy of castaneus and ruddii. 

 Synonymic homonyms : 



Medon Stephens, 1833b, p. 273. 



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"^ Bull. Soc. Linn. Normandie, ser. 2, vol. 6. 



