622 ME. E. B. NEWTON ON [Nov. I9H, 



Mactea sttjltoetjm (Linnaeus). 



Cardium stultorum Linnaeus, ' Systema Naturae ' 1758, ed. 10, p. 681. 



Mactra stultorum Linnaeus, ibid. 1767, ed. 12, vol. i, pt. 2, p. 1126 ; Searles 



Wood, Monogr. Pal. Soc. (British Crag Mollusca) 1853, pi. xxiii, figs. 3a-3d 



& p. 242. 



Remarks. — As well as being a well-known present-day species 

 (European seas), this shell has been recognized by Searles Wood as 

 British Pliocene, and by Prof. Sacco, under the Linnaean name of 

 Corallina, from rocks of similar age in Italy. There is but a single 

 left valve, embedded in matrix, to illustrate this form, showing 

 external characters. 



Jagonia pecten (Lamarck). (PI. XLIII, figs. 7 & 8.) 



Tellina reticulata Poli, ' Testacea Utriusque Siciliae ' 1795, vol. ii, 2nd Order 



(Bivalvia) pi. xx, fig. 14, p. 48 (? non Linnaeus). 

 Lucina pecten Lamarck, ' Hist. Nat. Anim. sans Vert.' 1818, vol. v, p. 543. 

 Jagonia reticulata Sacco, 'Moll. Terr. Terz. Piemonte ' 1901, pt. 29, pi. xx, 



figs. 65-67 & p. 97 ; Bede, Feuille des Jeunes Naturalistes, 1904, No. 408, 



p. 3. 



Remarks. — This species, which forms the type of Recluz's genus 

 Jagonia, 1 is regarded as ranging from the Tortonian stage of the 

 Miocene and through the Pliocene (see Sacco) ; M. Paul Bede also 

 recognizes it as occurring in the recent Quaternary deposits of 

 Tunisia (Sfax). It also lives in the Mediterranean. Only one valve 

 is in the collection. 



Loeipes lactetjs (Linnaeus). 



Tellina lactea Linnaeus, ' Systema Naturae ' 1758, ed. 10, p. 676. 



Lucina leucoma Turton, ' Conchylia Insularum Britannicarum ' 1822, p. 113, 



pi. vii, fig. 8. 

 Loripes lacteus Sacco, ' Moll. Terr. Terz. Piemonte' 1901, pt. 29, pi. xxix, figs. 1-4 



& p. 98 ; P. Bede, Bull. Mus. Hist. Nat. [ParisJ 1903, vol. ix, p. 422. 



"Remarks. — The species is common to Miocene (Tortonian) and 

 Pliocene rocks, and is a member of the recent fauna (Mediterranean). 

 M. Paul Bede schedules it among the recent Quaternary fauna of 

 Tunisia (Sfax). 



The Marine post-Pliocene (Ancient Beds) Mollusca. 

 Pelecypoda. 



Gltcymeeis pilosa (Linnaeus). 



Area pilosa Linnaeus, ' Systema Naturae ' 1767, ed. 12, vol. i, pt. 2, p. 1143. 

 Pectunculus glycymeris, Searles Wood, Monogr. Pal. Soc. 1850, pi. ix, fig. 1 d 



& p. 66 ; and Monogr. Pal. Soc. 1874 (Supplement), vars. infiatus & insubri- 



cus Brocchi, p. 116. 

 Axinea pilosa Sacco, 'Moll. Terr. Terz. Piemonte ' 1898, pt. 26, pi. vii, figs. 4-7 



& p. 31. 



Rem ar Its. — This specimen consists of a left valve showing 

 somewhat eroded external characters, the umbonal and hinge- 

 regions being also seen ; otherwise, the interior is filled with 

 matrix. The surface-striations, both longitudinal and concentric, 

 present the decussated sculpture of this species. Most authors have 

 united Gl. pilosa with Gl. glycymeris, an earlier described shell of 



1 Actes Soc, Linn, Bordeaux, 1869, vol. xxvii, pp. 35-41, 



