REPORT ON JURASSIC FOSSILS. 53 



In the Great Oolite section there is a good series oi Pelecypoda 

 from the Minchinhampton beds, making perhaps all the more 

 noticeable a failure of specimens from other strata and other 

 localities of the Great Oolite Series. In connexion with the 

 Minchinhampton fossils perhaps what is most noticeable is the 

 absence of that remarkable shell, Pachyrisma grande — a void very 

 difficult to fill up. 



Among Brachiopoda, there is but a small series from the Lias; 

 but fair series from rocks from Inferior Oolite to Cornbrash, 

 inclusive. 



Mention might here be made of a matter of interest to Brachio- 

 pod specialists. In a box of odd Brachiopods in the Museum 

 collection I found specimens of Eudesia leckhamptonensis, from a 

 matrix identical with that attached to such specimens as Eudesia 

 cardium, Zeilleria digona, Didyothyris coarctata and Pecten vagans, 

 which were with it. Now Eudesia leckhamptonensis was figured 

 by Davidson in his Monograph of Jurassic Brachiopoda as 

 Waldheimia cardium var. leck/iampfonensis ; and it was stated to 

 have come from the " Pea grit, Leckhampton Hill," and another 

 specimen from " Inferior Oolite, Andoversford," was " in the 

 Museum of the Geological Survey, Jermyn Street." 



But the series of shells from the same matrix in the Museum 

 collection showed that it could only have come from the Great 

 Oolite series. And this was confirmed by a Brachiopod specialist 

 from Bristol, Mr. J. W. D. Marshall, who visited the Museum : he 

 at once recognised the specimens and their matrix as being from 

 the Great Oolite of the Bath neighbourhood. He says the bed is 

 a little lower that what is called Bradford Clay. 



The explanation of the published records is probably this — 

 that the specimens were obtained from a dealer in Cheltenham ; 

 that he, deceived by the resemblance between their matrix and 

 that of the Pea grit, and forgetting where he had really obtained 

 them, gave them the recorded locality and origin. 



But the name leckhamptonensis will remain attached to this 

 fossil, which has no connection with Leckhampton except through 

 this fictitious history, of which the name will be a record. It has 

 long been a puzzle ; and it is interesting to have cleared it up. 



The Echinodermata are well represented by some very good 

 specimens. And among other fossils there is a fairly large series 

 of Corals. 



