464 GASTEROPODA OF THE INFERIOR OOLITE. 



BibliograpJnj, cj-c. — Briefly described by Lycett, but not figured. Not accepted by 

 Morris, nor enumerated by Lycett in the ' Cotteswold Hills ' amongst tlie fossils of 

 the Fimhria-Qtage. In the absence of further evidence P. retifera was included by 

 Hudleston and Wilson in the list of " species not accepted." Quite lately (1895) 

 Mr. Brodie's collection of fossils from the Leckhampton freestones has been 

 acquired for the Jermyn Street Museum. There are two specimens purporting 

 to be Patella retifera, besides specimens of FissureUa Brodiel, which latter is a 

 closely allied, if not identical form, in a somewhat different matrix. The labels 

 are not in Lycett's handwriting. 



DescrijMon : 



Length . . . . .9 mm. 



Width . . . . . G'5 mm. 



Height . . . . .4 mm. 



"Ovate, costated, and cancellated; costas numerous and unequal; crossed by 

 numerous encircling lines ; apex moderately elevated, posterior, but inclined 

 forwards." 



The so-called FissureUa Brodiei exhibits the same characters, but is a slightly 

 narrower shell. 



Relations and Distribution. — Both radial and concentric ornaments of this 

 extremely pretty little shell are very sharp, and this serves to distinguish it from 

 Patella (Guerangeria) clyjjeola, Deslongchamps, a Bathonian species, where the 

 radial ornamentation only is in evidence. There is something peculiar in the 

 character of the apex, which seems to indicate that it may not be a Patella in a 

 strict sense, though none of the specimens could be placed under FissureUa. 



There are about half a dozen specimens in the Brodie Collection from the 

 Leckhampton freestones, which contain a shallow-water fauna. 



