APPENDIX. 19 



is not only the young of the above-named Brachiopoda that cannot be always identified, but likewise those 

 of most animals ? 



A specimen of T. perovalis, from Yeovil, in the Bristol Institution Museum, measures, length 3 inches, 

 width 2| inches, depth 1 inch 10 lines ; it is the largest British example which has come under my 

 notice. I may say the same relative to the specimen of T. PhilUpsii, represented in Appendix, PI. A, 

 fig- 14. 



Page 51, Ter. maxillata, var. sub-maxillata. 



In PL A, fig. 19, I have figured what I take to be a young individual of the var. T. sub-maxillata; it 

 and many other similar specimens, present much outward resemblance to Ter. pentaedra of Miinster, 

 from tbe Coral Rag of Muggendorf (Bavaria), as seen in the British Museum. Mr. Lycett, who lives at the 

 locality where the specimens above mentioned occur, favours the opinion I have taken ; and states the 

 var. sub-maxillata to be found in a bed of soft Inferior Oolite Marl, which is situated in the upper part of 

 the Middle Freestone Division of that formation, and lower than the bed with T. globata. 



Page 55, Terebratula pygmaea. 



Belongs to the genus Rhynchonella, it must therefore, henceforth, be termed Rhijnchonella pygmaea, 

 Morris, sp. 



Page 58, Ter. Bentleyi, Morris. 



In place of the first two lines of the observations, read — " This is a very remarkable species, not 

 hitherto described, but found by the Rev. A. Griesbach in the Cornbrash of Rushden." It was by mistake 

 that the word "Wollaston" has been introduced, as I am informed by the Rev. A. W. Griesbach that the 

 Cornbrash does not exist there, and only appears at two or three miles distance. Rushden is the locality 

 from which the specimen (PI. XIII, fig. 9) was obtained. Mr. Morris mentions it from Bourn ; and Mr. 

 Carter has some examples said to be from the vicinity of Stilton. It does not appear to be rare in Ger- 

 many, but the specimens I have seen were smaller than our British ones. 



Page 59, Ter. sub-Bentleyi. 



In PI. A, fig. 15, I have represented the only perfect individual at present known of this remarkable 

 shell, and which was kindly forwarded for examination and publication by Prof. Sedgwick ; it belongs to 

 the Cambridge University Museum, and was derived from the soft inferior Oolitic Marl situated in the upper 

 part of the middle freestone division, at Brimscombe, near Minchinhampton. 1 Detached ventral or dental 

 valves have been now and then discovered. Dr. Wright possesses a specimen from the inferior oolite of 

 Nailsworth, Gloucestershire. The custom of placing a sub before the name of a person, town, or county is 

 so very objectionable and incorrect, that I am willing to exchange the denomination sub-Bentleyi for that 

 of Ter. galeiformis — a MS. name given by Prof. M'Coy to this species. 



1 On the label is written, Great Oolite. Mr. Lycett informs me that this is a mistake, as no example 

 has been found in that deposit. 



