PLATE 56, 37. 
FIG. 5 . 
CONCHYLIOLITHUS Anomites (scabriculus) sub- 
rotundus, valva plana obsolete punctato-striata, altera 
gibbosa : striis elevatis longitudinalibus tuberculatis : 
tuberculis oblongis subquincuncialibus. S. p. 
A fossil shell. The original an Anomia. Imperforate, 
with one valve convex and gibbous; the other flat, or 
slightly concave. Hinge close, straight, extended. The out- 
line, or general form of the shell, nearly round. The flat 
valve indistinctly marked with irregular, dotted lines; the 
convex valve with equal, prominent, longitudinal strias, ris- 
ing at regular distances into small, oblong tubercles, which 
are closely ranged, nearly in a quincunx order. The beak 
is obtuse and hooked over the hinge. 
Not a very common species. It is found in the lime- 
stone, near Tideswell, and some other places. 
Fig. 5. From the position does not well express the 
structure of the hinge, which is as much extended as in 
serniretkulatus. (Tab. 32. fig. 1, 2, 3.) 
