380 PLIOCENE MOLLUSCA. 



Genus MANGILIA, Risso (continued from p. 251). 

 Mangilia Bertrandi (Payraudeau). Plate XXXIX, figs. 21 — 23. 



1826. Pleurotoma Bertrandi, Payraudeau, Cat. Moll. Corse, p. 144, no. 288, pi. vii, figs. 12, 13. 

 1844. Pleurotoma Bertrandi, Philippi, Euum. Moll. Sic, vol. ii, p. 168 (not P. Bertrandi, vol. i, 



p. 198, pi. xi, fig. 20). 

 1878. Mangelia Bertrandi, de Stefani e Pantinelli, Bull. Soc. Malac. Ital., vol. iv, p. 128. 

 1884. Mangelia Bertrandi, Monterosato, Nomen. Gen. e Spec. Conch. Medit., p. 129. 

 1890. Mangilia Bertrandi, Carus, Prod. Faun. Medit., vol. ii, p. 417. 

 1892. Mangilia Bertrandi, Locard, Coq. mar. Cotes de France, p. 60, fig. 48. 

 1905. Mangelia bertrandi, Kobelt, Icon, schalentrag. europ. Meeresconch., vol. iii, p. 333, pi. xciii, 



figs. 6, 7. 

 1910. Mangilia Bertrandi aud var. elongatula, Cerulli-Irelli, Palaeont. Ital., vol. xvi, p. 53, pi. v, figs. 



7—9. 

 1914. Mangilia Bertrandi, Cipolla, Palaeont. Ital., vol. xx, p. 142, pi. xiii, fig. 12. 



Specific Characters. — Shell small, slender, subfusiform ; whorls 6 — 8, slightly 

 convex, the last excavated below, more than half the total length ; ornamented by 

 about 6 flexnons and thin longitudinal costge which reach the suture and the base of 

 the shell, having interspaces wider than the costse ; spiral striation exceedingly 

 faint, if any ; sntnre well-marked ; spire elongate, ending in a sharp point ; month 

 narrow, oblong, angnlate above, passing without break into a short canal ; outer 

 lip thickened outside by the labial rib with a distinct labial sinus. 



Dimensions. — L. 10 mm. B. 3 mm. 



Distribution. — Recent : Mediterranean, Adriatic, Morea, ^Egean. 



Fossil : Coralline Crag : Gedgrave. Waltonian : Little Oakley. 



Lower Pliocene : Siena. 



Upper Pliocene : Monte Mario, Livorno, Altavilla. 



Remarks. — As stated on p. 266, there has been much difference of opinion 

 among students of the Crag as to the correct identification of the present form. 

 Through the kindness of Sign. Cerulli-Irelli, who has sent me some verified fossils 

 from Monte Mario for comparison, I am able to figure what he considers a typical 

 example of this species. The M. Bertrandi of Payraudeau, who originally described 

 it, was a very small shell, about 10 or 12 mm. in length. It is found living in 

 many parts of the Mediterranean but, so far as I can ascertain, has only been 

 reported as fossil from two or three localities of the Italian Pliocene. 



I have recently found a specimen in the Sedgwick Museum among some small 

 Mangilias which seems to correspond with the Italian fossils. There are several 

 others, unfortunately imperfect, in my Oakley Collection, which are possibly the 

 same. 



