CONCHIFERA. 
464 
Galeomma Turtoni —Turton’s Galeomma. 
Plate LXXXVIII. fig. 8. 
Tumid in the middle, and gradually sloping to the sides; 
dull milk-white, covered with short interrupted opaque lines; 
beaks prominent and central. Breadth nearly an inch. Inha¬ 
bits the English channel. 
Genus 60.—MAGDA LA.— Leach. 
Generic Character. —Transversely oblong-ovate, gaping at 
one end ; beaks obtuse ; hinge without teeth, but provided with 
a transverse unconnected plate, attached to each valve by a car¬ 
tilage and an oblique descending groove; cartilage internal. 
Mcigdala striata. — The Striated Magdala. 
Plate XCI. fig. 12. 
Ovate-oblong, thin, pellucid, white ; posterior side rounded, 
and the anterior side truncated and gaping, with longitudinal 
stria? and concentric wrinkles ; inside pearlaceous. One inch 
broad. Inhabits the British seas. 
Gen us 61.—MYATELLA. — Brown. 
Generic Character —Sub-parallelogramical, transverse, an¬ 
terior and truncated ; the valves reflex, forming a hiatus ; umbo 
small placed nearest the posterior end *, with one erect, broad, 
doubly channelled tooth in the left valve, which locks into a cor¬ 
responding cavity in the other. 
Myatella striata. — The Striated Myatella. 
Plate LXXX1X. fig. 12. 
Subpellucid, white, of a delicate texture, longitudinally striat¬ 
ed ; inside white, slightly reflecting a nacred hue. Length, half 
an inch ; breadth, an inch. Inhabits the sea at Tenby in Wales. 
Genus 62.—CRENELLA.— Brown. 
Generic Character —Oblong-ovate, equilateral, ventricose; 
beaks obtuse, slightly turned to one side; hinge without teeth, 
but with a flattened, slightly crenated plate in each valve; the 
right valve with a triangular, horizontal, projecting, reflexed 
plate, and the left one with an oblique plate, both of which 
are slightly crenated. 
