460 
CONCHIFERA. 
a dilated, compressed, somewhat oblique cardinal tooth in each 
valve ; slightly concave above for the reception of the ligament; 
ligament partly external and partly internal. 
Solemya Mediterranea .— The Mediterranean Solemya. 
Plate XC. fig. 23. 
Transversely oblong ; blackish-brown ; longitudinally ribbed, 
with imbricated, projecting foliations ; inside white. Inhabits 
the Mediterranean sea. 
Genus 49.—TELLIMYA.— Brown. 
Generic Character. —Shell equivalve, inequilateral, sub-orbi¬ 
cular or transverse; left valve without cardinal teeth, but 
having two projecting lateral teeth with a groove in their cen¬ 
tre, and sometimes one or two teeth on the right side; right 
valve with two recurved prominent teeth ; margin entire. 
This genus consists of two sections.—* Shells orbicular. 
** Shells transverse. 
Tellimxja tenuis.— The Thin Tellimya. 
Plate XC. fig 14. 
Nearly orbicular, white, thin, ventricose, and shining; one 
valve, with two teeth locking into a triangular void in the oppo¬ 
site one, with a transverse lamina on each side. One-third of 
an inch long. Inhabits the British seas. 
Genus 50.— UN GULIN A.— Lamarck. 
Generic Character. —Longitudinal or subtransverse, rounded 
above, subequilateral, with the valves close; beaks decorticat¬ 
ed ; one short primary cleft tooth in each valve, with an oblong 
groove divided in the middle of the margin; ligament internal, 
inserted in a pit. 
Ungulina transversa .— The Transverse Ungulina. 
Plate XC. fig. 22. 
Transversely round, rugose, of a yellowish-brown colour. 
** Shells with an internal ligament, and the valves not gaping 
at the sides. 
