164 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I48 



the brachial valve that subsequently modified to form the camarophor- 

 ium. Available evidence argues against this relationship, however. 

 Serial sections of the type species of Pseudocamarophoria by Schmidt 

 (1941, pi. 7, fig. 25), P. microrhyncha (Roemer), show the median 

 septum extending to the hinge plate in the posterior of the valve. The 

 septum of the camarophorium in the Stenoscismatacea is entirely 

 separate from the hinge plate and an accessory low septum, the inter- 

 camarophorial plate, joins the hinge plate to the camarophorium. The 

 intercamarophorial plate, therefore, is the analogue of the septum of 

 Pseudocamarophoria, not the camarophorium whose profile happens to 

 be similar. 



Unfortunately, Schmidt's (1941) sections do not indicate the man- 

 ner of insertion of the septum in species of Pseudocamarophoria. If 

 the fibers of the septum are continuous with those of the valve floor, 

 indicating derivation of the septum from the floor, they postulate re- 

 mote relationship to the Stenoscismatacea whose brachial septum in- 

 serts wedgelike with obvious discontinuity into the valve floor. 



Nomenclature. — Wedekind (1926, p. 197) established the name 

 Pseudocamarophoria casually in a general discussion of Devonian 

 faunas, citing the genotype Terebratula microrhyncha Roemer in a 

 footnote. Leidhold (1928, p. 35) apparently missed this obscure desig- 

 nation, and included T. microrhyncha in his genus Septalaria; no 

 reference to Wedekind appears in his (or Schmidt's, 1941) syn- 

 onymy of that species. T. microrhyncha is not the type species of 

 Septalaria (the type is Terebratula subtetragona Schnur), but to 

 judge from discussion and illustrations by Leidhold (1928) and 

 Schmidt (1941), both of whom assigned T. microrhyncha to Septala- 

 ria, the species certainly is congeneric with T. subtetragona. There- 

 fore, Septalaria should be considered a junior subjective synonym of 

 Pseudocamarophoria. 



Neave (1940, vol. 3, p. 973) cited Pseudocamarophoria as a nomen 

 nudum. However, under the Code of Zoological Nomenclature (Stoll, 

 et al., 1961) the indication by Wedekind (1926) is sufficient to estab- 

 lish the name validly. It predates Septalaria. 



Genus CAMEROPHORINA Schmidt 1941 



Camerophorina SCHMIDT, H., 1941, Senckenbergischen Nat. Gesell., Abh. 459, 



p. 43. 

 NOT Camarophorina LICHAREV, B., 1934, Doklady Akad. Nauk, Leningrad, 



vol. 1, No. 4, p. 211, 213. 



Discussion. — Schmidt named this genus for its superficial resemb- 

 lance to Camerophoria, but did not classify it with that genus. She 

 characterized the genus by its spondylium in the pedicle valve, but 



