I 
PA NO P/E A gentihV. 
TAB. DCX.— Jig. 1 . 
Spec. Char. Transversely ova to-elongated, flattened 
on the sides, nearly even, slender; posterior half 
rather pointed, the other rounded and ex- 
panded upwards ; umbones nearly central ; both 
extremities slightly gaping- ; width nearly twice 
the length. 
This resembles P. Basteroti of Valenciennes, which is 
found near Bordeaux, but the umbones are more nearly 
central ; it is an elegantly formed shell, and apparently a 
distinct species. Two views are given of the only valve 
which has been obtained. It is in the collection of Mr. 
S. V. Wood, who found it in Crag at Alderton, near Bawd- 
say, above ten years ago. 
PANOP^EA Norvegica, var. pana. 
TAB. DCX. — -Jig. 2, and DCXI. — -Jigs. 1 and 2. 
Spec. Char. Transversely oblong, compressed, 
thick, the posterior extremity largely truncated ; 
surface divided into three parts by two diverging, 
longitudinal slight elevations; beaks nearly cen- 
tral ; muscular impressions deep, those of the 
mantle large, unconnected ; the sinus shallow and 
not complete. 
Syn. Mya Norvegica, Spengler Act. Soc. d’Hist. 
Nat. Copenh. 46. PI. II. f. 18. Mya Glycime- 
ris, Donovan Brit. Shells t. 142. Glycimeris 
arctica, Lam. Hist. Nat. vol. 6. 458." Lam. 
Hist. Nat. ed. 2. vol. 6. 68. note. Panopeea 
Glycimeris, Turton Brit. Bivalves 42. Bean 
Vol. VII. 
