28 BRITISH PERMIAN BRACIIIOPODA. 



Camarophoria multiplicata, King. Annals and Mag. of Nat. Hist., vol. xviii, 1st 



series, p. 28, July, 1846 ;' and a Catalogue of the 

 Organic Remains of the Permian Rocks of Northum- 

 berland and Durham, p. 7, 19th August, 1848; 

 a Monograph of the Permian Fossils of England, 

 p. 121, pi. vii, figs. 2G — 32; and pi. viii, figs. 1 — 7, 

 1850. 



Shell sub-trigonal or obovate, wider thanlong, with narrow marginal expansions ; dorsal 

 valve inflated and gibbous, presenting in profile a very convex curve ; mesial fold wide, 

 rounded, and somewhat flattened along the middle. The ventral valve is most convex at 

 and near the beak, which is rounded and incurved ; foramen small, circular. The sinus 

 varies in depth and width, and is likewise flattened along its middle, producing a more or 

 less elevated convex curve in front. About thirty simple or intercalated radiating ribs 

 ornament the surface of each valve, of which from eight to ten occupy the surface of the 

 mesial fold, and from seven to nine that of the sinus of the opposite valve. The dimensions 

 taken from two examples have produced — ■ 



Length 13, width 17, depth 11 lines. 

 11, „ 14, „ 7^ lines. 



No testiferous specimens of this large Camarophoria have been discovered as yet, and 

 all we know of the species is taken from beautifully preserved internal casts. It is stated 

 to have been found abundantly only in a few localities, and but at times in the shell lime- 

 stone of Humbleton and Dalton, once in the magnesian conglomerate of Tynemouth. 



Mr. Howse has observed that, "after examining an extensive series (of the shell under 

 description and C. Schlotheimi), we are obliged to conclude, from the following constant 

 characters, that they are quite distinct. In the present species the form is more ovate, and 

 the sinus much wider and less elevated in front. The ribs are always more numerous, and 

 when they are not bifurcated they are more nearly parallel than in C. Schlotheimi. It 

 is also of a much larger size." 2 In p. 121 of his ' Monograph/ Professor King enters upon 

 other details to demonstrate that the Camarophoria in question cannot be considered as a 

 large state of Von Buch's species, C. Schlotheimi, an opinion in which I entirely coincide. 

 Baron Schauroth sent me several specimens from Ilmenau, under the name of C. multi- 

 plicata ; but these do not agree sufficiently, either in size or detail, with our British shell so 

 as to enable me to pass a decided opinion on the matter, and especially so as the specimens 

 were not in a very perfect or satisfactory state of preservation. It is, therefore, still uncer- 

 tain whether this large Camarophoria has been found in any of the Continental Permian 

 localities. 



1 Unfortunately, in 1846, the term multiplicata was neither described nor accompanied with reference 

 to locality or stratigraphical position ; it therefore falls under the class of Catalogue names, which cannot 

 claim priority should some subsequent author describe the same shell under a different name. I am there- 

 fore compelled to adopt that given by Mr. Howse on the 17th of August, 1848. 



2 'Catalogue,' p. 252, 1848. 



