GINGLYMACONCHA. PECTUNCULID. 339 
Nat. xii. 1143. no. 181; Chem. Conch. vii. t. lvii. f. 564; 
M. § R. Trans. Linn. Soc. viii. 93; Mont. Test. Brit. 136 ; 
Lam. Hist. Nat. des Anim. sans Vert. vii. part. 1.49 ; Flem. 
Edinb. Encycl. vii. 77; Dill. Desc. Cat. 227 ; Turt. Conch. 
Dict. 7. 
Var. 6. Arca Glycymeris, Penn. Brit. Zool. iv. 98. t. lviii. f. 58 ; 
Lam. Hist. Nat. des Anim. sans Vert. vii. part. i. 49. 
Var. 3. The valves nearly equilateral, white-fulvous, zoned 
with fulvous. 
This species is very common in the Atlantic, European and 
Mediterranean Seas in deep water on sandy bottoms. 
It is common on the south and western coasts of Cornwall, 
Devon and Dorset ; the southern coasts of Wales and Ireland ; 
in the Hebrides, Salt-lochs and Friths in Scotland. 
2. PECTUNCULUS PILOSUS. 
Shells with their valves orbicularly oval, tumid, with decus- 
sating strize ; the umbones oblique ; the epidermis fuscous and 
hairy. Length one and seven-eighths of an inch; height one 
and seven-eighths and one-half of an inch. 
Arca pilosa, Lister, Conch. t. cexl. f. 77 ; Poli, Test. ii. t. xxvi. 
f. 1=4; Lam. Hist. Nat. des Anim. sans Vert. vii. part. 1. 
49, var. a. 
Var. 8. Arca pilosa, Lister, Conch. t. cexlvii. f. 82; Petiv. 
Gaz t, lexix. f. 7 :/ Born. Mus. t. it. a, 6.; Linn. Syst. 
Naé. xii. 1143. no. 182; Poli, Test. 1. t. xxv. f. 19; Mont. 
Test. Brit. 136; M.& R. Trans. Linn. Soc. viii. 94; Flem. 
Edinb. Encycl. vii. 77 ; Dill. Desc. Cat. 227 ; Lam. Hist. 
Nat. des Anim. sans Vert. vu. part. i. 50, var. 6.; Turt. 
Conch. Dict. 6. 
Arca Glycymeris, Donov. Brit. Shells, t. xxxvii. 
Var. a. Shells with their valves gibbous, clouded with fus- 
cous and fulvous; the upper margin irregular and produced. 
Var. /3. Shells with their valves suborbicular, tumid, whitish, 
painted with little flames ; the upper margin rounded and re- 
gular. 
This species inhabits the Atlantic, European, Mediterranean 
and Adriatic seas in deep water on sandy bottoms. 
Q2 
