118 
BRACHIOPODA. 
Fig. 26. Thecidium Mediterraneum. 
Fig. 26. — Interior ot the dorsal valve, from a specimen in the cabinet of Thomas 
Davidson, Esq. 
Thecidea (radiata), Defr. in Fer. Tail. Syst.38, 1821. 
Blainv. Man. Malac, 516. 629, 1825; Diet. Sci. Nat. liii. 
p. 434, 1828. 
Risso, Europ. Merid. 393, 1826. 
Thecidium, G. B. Sowerby, Gen. xx. 1844 ; Thes. Conch, vii. 1846. 
Terebratula, Faujas, Mont St. Pierre, t. 27. f. 8. 
Terebratula, sp., Lamk. Hist. 
1 . Thecidium Mediterraneum. 
Shell small, pale yellow, smooth, subquadrate, slightly bilobed 
in front, attached by the produced and pointed beak ; hinge-area 
triangular, smooth ; margins thickened and granulated inter- 
nally ; brachial septum' 3-lobed; loop rudimentarj-, 4-lobed. 
Lon. 5, lat. 4i lines (fig. 26). 
Thecidea Mediterranea, Blainv. Man. Malac, 629, 1825; Diet. 
Sci. Nat. liii. p. 434, 1828. 
Desh. in Lamk. Hist. ed. 2. vii. p. 348 ; Ency. Meth. iii. 
p. 135. 
Risso, Eur. Merid. iv. f. 183 (bad). 
Philippi, Moll. Sicil. i. p. 99. t. 6. f. 17 ; ii. p. 70- 
Dav. Ann. Nat. Hist. 1852, p. 374. 
Thecidium Mediterraneum, Sow. Gen. f. 6, 7 ; Thes. Conch, vii. 
p. 371 . t. 73 . f. 30-32. 
Thecidea testudinaria, Michelotti, Brach. p. 5 ; Prec. Faun. Mioc. 
pi. 2. f. 26. 
Thecidsea spondylea, Scacchi, Cat. 8. f. 7-10. 
Hah. Mediterranean, attached to corals. 
Fossil. Miocene. Tmin. 
