39 
TEREBRATULA? lineafa. 
TAB. CCCXXXI V.—Figs. 1 and 2. 
Spec. Char. Transversely oval, gibbose ; mi- 
nutely striated longitudinally, and trans- 
versely sulcated ; sulci distant; no sinus in 
the front. 
Syn. Conch. Anomitcs liueatus, Martin Pet a 
Derb. t. 36, f. 3. 
Shell nearly twice as wide as long, with incurved beaks 
neither of which is perforated, but in the confined space 
occupied by the hinge, there is an angular sinus. The 
longitudinal stride are extremely minute and close, but 
the concentric furrows are conspicuous and rather remote. 
Until the internal structure of this and the following 
shell is disclosed by some happily preserved specimens, 
we must remain uncertain of the proper genus top place 
them under ; it is, however, clear that they are not true 
Terebratulae : they are, very probably, Spirifers. 
From the Metalliferous Limestone of Derbyshire. 
