NOTES ON THE LIAS IN THE NEIGHBOURHOOD OF EA.DSTOCK, 183 



Perhaps fiom the abundance of the genus Lima, with its three if 

 not four species, part of these beds belong to the lower part of the 

 Bucklandi zone, as bed (i) with its abundance of A. Sauzeanus 

 certainly belongs to the upper. But others near the base certainly 

 represent the Planorbis zone, as we have obtained the latter 

 Ammonite in a quarry close here, in similar beds lithologically 

 C corn-grits") — we do not happen to have found it however in 

 this quarry ; from the state of the quarry we have not been able 

 to attack these beds to advantage, nor had the opportunity of 

 seeing any stone got out from them. 



Ammonites angulatus we have not been fortunate enough to 

 collect anywhere in the district, so that we offer no conjectures 

 about the Angulatus zone. It is probably not developed, as the 

 *' corn-grits" belong for the most part to the Planorbis zone: 

 this will be alluded to below as further evidence was obtained 

 from the Huish quarries. 



Bed (i) is remarkably rich in Brachiopoda, both in individuals 

 and in species. Spiriferina Walcottii is found in this bed 

 throughout the area. Here we have also Sp. rostrata, Rhynchonella 

 vanabilis, Terehratula punctata, and cornuta. In determining the 

 latter species I have endeavoured to follow Davidson's monograph 

 (Pal. Soc.) and if I am right here, T. cornuta, Sow. would seem 

 to take the place of Ter, cor. Lam, which occupies an analagous 

 position on the continent. 



I am indebted to Mr. E. Y. Sherring, of Hallatrow, for the 

 loan of Brachiopoda from this section : in his collection I have 

 determined Sp. Walcottii, abundant, Sp, rostrata, nineteen 

 specimens, Sp. Muensteri, three specimens, (I consider this only 

 a variety of S. Walcottii), T. punctata, six specimens, T. cornuta, 

 ten specimens. 



The quarrymen tell me that all these species come from bed (i), 

 and from comparing the specimens with those I have obtained m 

 situ in the bed, one may believe their statement. T. cornuta, it will 

 be seen from the section, I found in situ ; it is usually considered a 

 M. Lias species, so that its position here is noteworthy. 



