BRITISH FOSSILS. 



7 



own viewSj as shown in the arrangement of the plate, and after 

 carefully examining the specimens in the Museum of Practical 

 Geology, they are here united ; the var. Forbesii may, however, 

 eventually be regarded as a distinct species. 



Affinities. — If E. higranularis of Agassiz (and its variety E. in- 

 termedins) be not the same species with ours, it must be closely 

 allied. The description of M. Cotteau would make it appear to be 

 a depressed variety much like serialis ; it has but two rows of 

 primaries in each area. It occurs with the perlatus in the Great 

 Oolite of Grimaux, Yonne. According to M. Gotteau, K inter- 

 medins of Agassiz is only a variety of higranularis, a view in 

 which Dr. Wright agrees. The E. gyratus, Agassiz, well figured 

 by him in his Ech. Suisses, differs at first sight materially from the 

 present species in the great number and small size of its tubercles, 

 two and even three rows being arranged outside the principal ones, 

 and one or two down the ambulacra. The latter are prominent, 

 and the avenues sunk, and the median line of the intervening areas 

 is bare of tubercles all the way down, and so much impressed that 

 the species looks lobed. It is nevertheless a most closely related 

 species. 



Localities and Geological Range. — Upper? and Lower Oolites. 

 C0RA.L Rag, Malton^ Scarborough (Prof Phillips' and Brit. Museum 

 Collection*). Var. germinans, Great Oolite, Whitwell, Yorkshire 

 (Forbes). Inferior Oolite, Crickley Hill, Gloucestershire (Survey 

 Collection) ; Leckhampton and Cleeve Hills (Survey Collection) ; 

 Stroud ; Nailsworth ; Minchinhampton ; Dundry (Dr. Wright). 



Foreign Localities. — Coral Rag (Etage Corallien), " Terrain a 

 Chailles,'' Val de Moutiers, He de R^ ; Salins ; Besancon (Agass. 

 and Desor). Great Oolite (Terr. Bathonien), Grimaux, Departe- 

 ment de TYonne (Cotteauj. Var. serialis, Fringeli, Canton de 

 Soleure (Agassiz). 



* Dr. Wright has good reason for believing that this is an error of locality, and that 

 E. perlatus is not found in Britain above the Great Oolite. 



