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BRITISH DEVONIAN BRACHIOPODA. 



05s. This small shell is abundant in the Middle Devonian limestone of Rarusleugh 

 quarry, near Ogwell, in Devonshire. It is exceedingly variable in shape, certain examples 

 approaching in form to some varieties of Schlotheim's Camarophoria globvMna, but two 

 diverging lines departing from the extremity of the beak seem to indicate that the 

 shell under description would belong to the genus Rhynchonella. 



Rhynchonella (?) Ltjmmatoniensis, Dav. PI. XIV, figs. 14 — 18. 



Spec. Char. Shell small, somewhat pentagonal, slightly transverse or as broad as 

 long. Valves moderately convex ; in the dorsal one a fold of moderate elevation, com- 

 mencing at about the middle of the shell, extends to the front, while in the ventral one 

 there exists a sinus of variable depth : beak small and incurved. Surface of both valves 

 smooth from the umbone to about half the length of the valve, the remaining portion 

 being ornamented with a variable number of small ribs, of which two, three, four, or five 

 compose the fold ; one, two, three, and four the sinus ; on the lateral portions of the valve 

 the number varies from two to four on each side, but are visible only in the vicinity of the 

 margin. Proportions variable : two specimens measured — 

 Length 5^, width G, depth 4^ lines. 

 „ 4, „ 4, „ 3. 



05s. This small species is common in the Middle Devonian limestone of Lummaton, 

 near Torquay, and has been found by Mr. Champernowne at Dartington, near Totness. 

 By its exterior shapes it nearly resembles Camarophoria glo5ulina, so much so, indeed, 

 that I was long uncertain whether it might not belong to that species, but after an atten- 

 tive examination of many examples I could not detect in any of them, or of their internal 

 casts, the peculiar features or characters of the genus Camarophoria ; nor did any of them 

 show a trace of the median line which is often seen through the transparency of the shell, 

 and which, in the genus Camarophoria, extends from the extremity of the beak to about 

 a third of the length of the valve, and indicates the presence of a central median 

 septum. The larger number of specimens possess three or four small ribs in the fold, but 

 this variability is common to the generality of species of the genus Rhynchonella as well 

 as of Camarophoria. 



Genus — Camarophoria, King. 

 Camarophoria rhomboidea, Phillips (? globulina var.). PI. XIV, figs. 19 — 22. 



Terebratula rhomboidea, Phillips. Pal. Fossils of Cornwall, Devon, and West 



Somerset, p. 88, pi. xxxv, fig. 158, 1841. 



