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TEREBRATULA platyloha. 
TAB. CCCCXCVI.— figs. 5 and 6. 
Spec. Char. Transversely obovate, depressed; front 
elevated, with several acute plaits in the middle 
of the sinus ; sides with one or two obscure 
plaits upon their edges. 
Almost twice as wide as long, and much depressed ; 
several obtuse ribs proceed from the plaits in the edge of 
the front to a greater or less distance towards the beaks 
in various individuals : they are not much elevated. The 
sinus in the front almost divides it into two lobes. 
The only specimens I have seen of this species are 
from Clitheroe : they enrich the collection of Charles 
Stokes, Esq., to whose liberality I am much indebted. 
TEREBRATULA Pugnus. 
TAB. CCCCXCVII. 
Spec. Char. Obovato-deltoid, rather depressed; 
front much elevated, with from four to six 
plaits in the middle of the sinus ; sides convex, 
with several plaits upon their edges. 
Syn. Conch. Anomites Pugnus. Martin , Pet. Derb 
PL 22, jigs. 4 and 5. Sj/st. Arr. P. 13. 
From the marginal plaits in the middle of the sinus a 
few furrows generally extend some way into the shell, 
and sometimes reach nearly to the beaks ; otherwise the 
