204 BULLETIN 2 00, UNITED STATES NATIONAL MUSEUM 



ISCHNOPODA Stephens— Continued 

 Synonyms — Continued 



Terasota Casey, 1906, p. 337. [=Aloconota.] 

 Tetropla Mulsant and Key, 1874d, p. 524. [=^Atheta.] 

 Thinobaena Thomson, 1859, p. 39. [Subgenus.] 

 Thinoecia Mulsant and Rey, 1873b, p. 185. l=Hydrosmecta.1 

 Thrichiota Mulsant and Rey, 1873b, p. 180. [=Bessobia.] 

 Traumoecia Mulsant and Rey, 1874d, p. 663. [Subgenus.] 

 Tropatheta Bernhauer, 1927a, p. 81. [Subgenus.] 

 Umbaxa Blackwelder, new name. [Subgenus.] 

 Valenusa Casey, 1906, p. 342. [Subgenus.] 

 Xenota Mulsant and Rey, 1874d, p. 429. [=Atheta.'] 

 Xestota Bernhauer, 1808c, p. 361. [Subgenus.] 

 Variant spellings : 



TscHNOPODA Ih.ssen, 1935, p. IQ.^- 

 Notes : This name has long been used as a subgenus of Tachyusa. Its true 

 genotype, however, belongs in the old genus Atheta, to which the sub- 

 genus must be transferred. Since this name is older than Atheta, it be- 

 comes also the name of the genus. 



The disposition of the names Atheta, Ischnopoda, and Tachyusa in- 

 dicated in this work seems inescapable on the basis of the facts as in- 

 terpreted herein. However, I recognize that it is very unlikely that the 

 changes here indicated will be accepted by other specialists on the family, 

 who will either ask for action by the International Commission or simply 

 interpret the genotype designations differently (as Tottenham has done). 

 There will undoubtedly be confusion between these two views, where so 

 many subgenera are involved. I have therefore prepared the following 

 outline of what would result if aterrima Graveuhorst is NOT accepted as 

 the type of Ischnopoda. 



ISCHNOPODA. This would be a genus based on Aleochara atra 

 Gravenhorst. It would have as synonyms Tachyusa, Thinonoma, and 

 Leucopus (all objective). It would have as subgenera Caliusa (with its 

 synonyms Tachyusilla and Tachyusota), Cathusya, Calischnopoda, 

 Pisehnopoda, and Chyusata. 



ATHETA. This would be a genus based on Aleochara graminicola 

 Gravenhorst. It would have as synonyms the six now listed under the 

 subgenus Atheta, and it would have as subgenera all those now listed 

 under Ischnopoda. 



TACHYUSA. This would be a synonym of Ischnopoda. 

 See also the notes under Atheta and Tachyusa. 

 ISCHNOPYGOSTENUS Bernhauer, 1927b, p. 234. [Subgenus of Pygostenus.] 

 Genotype '. Ischnopygostenus natalensis (Bernhauer) (Pygosteivus) . 

 Fixed Tjy : Blackwelder, here, by subsequent designation. 

 Synonyms : ( See Pygostenus ) . 

 ISCHNOSOMA Stephens, 1829a, p. 22. [Junior homonym of Ischnosoma Spix, 

 1S29. Synonym of Mycetoporus.'] 

 Genotype'. Ischnosoma splendida (Gravenhorst) (Tachinus). 

 Fixed 'by : Thomson, 1859, p. 47, by subsequent designation. 

 Later citations: I. hrunneus (Marsham), by des Gozis, 1886, p. 14. /. 

 splendida (Gravenhorst), by Tottenham, 1939a, p. 226; by Tottenham, 

 1949b, p. 377. 



•^Ent. Blatter, vol. 31. 



