6 PEOCEEDIlSrGS OF THE NATIONAL, MUSEUM VOL. 7& 



to have been no notice taken of it. It may have been noticed and 

 may have led to a more correct use of " anterior " and " posterior " 

 in referring to the naiades. Eafinesque (1819) in mention of Unio 

 used them as Bruguiere and Lamarck did in Anodontites and 

 Anodonta^ but the next year (1820) he used them correctly in one of 

 his papers which have aroused so much controversy over the naiades. 

 This is shown by his descriptions; also directly on page 299 (1820) 

 thus: '■'' Metaytera * * * means posterior wing. At first (viz, 

 1819, p. 426) I adopted Proptera, which was an error, for it means 

 anterior wing." 



Further along in his observations on Anodonta cited above 

 Lamarck touches on the embryology of these mollusks. He says: 

 "It is hermaphroditic and apparently viviparous; for the eggs pass 

 into the gills, where one finds the young with their shell all formed." 



Swainson (1840, p. 287) offered a generic name PatuloTia^ but 

 without description. On page 381 he cites Anodonta ovata Swain- 

 son and A. rotundata Swainson. Tliese he described and figured in 

 his Exotic Conchology (1821-22, pis. 36, 37), but gave no locality. 

 Hanley, who edited the second edition of the Exotic Conchology 

 (1841), says there that ovata is a synonym of Lamarck's trapezialis, 

 while Simpson (1900, p. 922) doubtfully refers it to Glabaris traut- 

 loivianus Lea. Hanley let Swainson's roiundafa stand as a good 

 species, but Simpson (1900, p. 638) doubtfully thought it the same 

 as Anodonta woodiana Lea. Because of the doubt surrounding it 

 the name Patu'aria may well be disregarded, and in any event the 

 specimens cited b}' Swainson probably are not Anodontites. His 

 ovata seems to be a Leila^ while his rotundata is Anodonta tcoodiana 

 Lea, as supposed by Simpson. 



Gray (1847, p. 197) used the name A7iodonta esula. On page 206 

 of the same paper he says in errata, to " No. 691 add Glabaris " — 

 probably meaning tliis as a new generic name for the A. esula, but 

 there was no description. 



Anodonta esu^a Lamarck is now thought to be a variation of A. 

 traverdalis Lamarck, and as the latter belongs in the genus Leila 

 Gray, 1840, according to Frierson (1922, p. 7), the name Glabaris 

 becomes a synonym of Leila. 



Unfortunately Ihering (1893) and Simpson (1900, p. 916) used 

 Glabaris for Anodontites, and the former was in general use until 

 1909. Thiele (1909) revived the name Anodontites Bruguiere, and 

 Ortmann (1911, p. 88) confirmed Thiele's conclusions. Simpson 

 (1914, p. 1403) used the name Anodontites. Marshall (1930a, p. 128) 

 shows that Ortmaim (1921, pis. 40, 41) figured for Anodontites cns- 

 pata Bruguiere a species that the next j'oar was described by Mar- 

 shall (1922, p. 7) as Anodontites colomhiensis. 



It is important that Ortmann's error be corrected, as crispata and 

 colonibiensis belong in different sections of Anodontites, and a mis- 



