BRACHIOPODA. 



317 



Mr. Davidson, in his Devonian Brachiopoda,* has referred the Devonian 

 species, Orthis produdoides, Min'chison, to Strophalosia, but it shows no evidence 

 of attachment, and more properly belongs to Productklla. Professor King 

 had previously made a similar reference of this species,f and included in the 

 same genus Produdus subaculeatus, Murchij^on, an unattached species, subse- 

 quently taken as the type of Productella. 



Genus DAVIESIELLA, Waagen. 1884. 



1823. Pi-odacttis, Sowerry, Mineral Conchology, vol. iv, pi'- fil. •'-i'- 



1837. LepUeiia, Fischer. Oryctogr. du Goiivern. de Moseoii, p. 143, jil. xxii, %. 1. 



1842. Produeta, d'Archiac and de Vehneuil. Trans. Geol. Soc. London, 2nd Ser., vol. vi. jif. ii, ji. :i97. 



1846. Chonetes, de KEYSBRLiNr;. Beol). Reise in das Petschora-land, p. 214, pi. vi, fig-. 1. 



1847. Chonetes, de Koninck. Monogr. dn Geni-e Chonetes, p. 189, pi. xix, fig-. 1. 



1861. Chonetes, Davidson. British Carboniferous Brachiopoda, p. ISO, pi. xlv, figs. 1-7. 



1862. Productus, Uavid.son. Brit. Carli. Brachiopoda, pp. 275, 277, pi. xlvi, fig. 1 ; pi. Iv, fig-s. 6-10. 

 1884. Daviesiella, Waagen. Mem. Geol. Siirv. India ; Palseontologia Indica, Sei-. xiii, vol.i, No.4,p. 618. 



Dr. Waagen writes : 



"I create this genus for the reception of such forms as Produdus Llangollensis, 

 Dav., and Prod, comoides, Sow., which are characterized by cardinal teeth and a 

 second pair of adductor impressions in the ventral valve. The other characters 

 are like those of Productds. Mountain limestone." — op. at. 



'27. Pfoiluctus {Daviesiella) Llavr/oUc.nsis, Davidson. 

 Alter Davidson. 



* Page 97. 



t Periiiiau Fossils, p. 95. 



