Brachiopod Nomenclature. 527 



1788. A. J. Hetzius, Diss. Nov. Test. Gen. p. l;j. 



Gives a definition of Tci-ehratula. Places therein first 

 Tereb. caput-serjjentis, and fourth Tereh. plicata, to which 

 lie gives as a reference Anomia terehratula, Linn<5, thou^^h 

 evidently a mistaken definition. On p. 13 he speaks of 

 Terehratulas LinneanaSj and how tliey differ from Anomia. 



1792. Bruguiere, "Sur deux Nouv. Esp. de Tdr^bratules 

 fossiles," Journ. d'Histoire Nat. i. p. 419. 



Brugui^re describes, with figures, two species — Terehratula 

 cor and Terehr. pileus — which now belong to the genus 

 Antinomia, Catullo *. 



1793. A. MODEER, Vetens. Acad. Nya Handl. p. 180. 

 He defines Terehratula, but gives no type. 



1798. CuviER, C, Tableau filementaire, p. 434. 



The first species which he cites under Terehratula is the 

 recent species T. vitrea, but he gives as a synonym of this 

 Anomia terehratula^ Liu. He does not fix any type. 



1798. J. F. BOLTEN, Mus. boltenianum, p. 192. 



Catalogues certain recent Terebratuloids under the genus 

 " Anomia, Die Terebratel," and removes Anomia ephippium 

 into a genus Fenestella. 



1799. Lamarck, " Prodr. Nouv. Classif. Coq.," Mdm. Soc. 

 d'Hist. Nat. Paris, p. 89, Terehratula. 



He gives a description and places " Anomia terehratula, 

 Liu.," as type. 



There is no necessity to pursue this part of the subject 

 further. ]\lnller, it may be said, has given us an indication 

 that he would regard a plicate Terehratula like the Anomia 

 terehratula, Linne, as the typical form, and he is doubtful if 

 2\ cranium is a (or the) Terehratula, because it is not plicate. 

 Then Thunbcrg definitely includes Terehratula terehratula 

 among his species of the genus, and, according to the accepted 

 zoological rule, when no selection has been made a species 

 with the trivial name the same as the generic becomes type 

 of the genus. Fortunately the person who first made definite 



* S. Buckmnn, " Brachiopod Ilomceomorphv," Quart. Joiiru. Geo). Soc. 

 Ixii. p. 433 (lOOC). 



