317 Tertiary Foraminifera. 23 



abundantly on the shores of the British Isles, and in temperate 

 seas it has a wide distribution but it is unknown in the cold 

 water of ar(5lic latitudes. 



Horizon and locality — Miocene; Yorktown, Va. 



Geologicxl distribution. — Lower Lias? Tertiary and Recent. 



Genus M I LI O LIMA Williamson. 



Miliolina seminulum. 



Syn. Serpiila saiiinulum Linne, Syst. Nat., 12 ed., p. 1264, No. 791, 1767;' 

 13 ed. (Gmelin's), p. 3739, No. 2, 1788. 

 Miliolina seminulum Williamson, Rec. Foram. Gt. Brit., p. 85, pi. 



vii, figs. 183-185, 185S. 

 Miliolina seminulum Brady, Chal. Rep't, vol. ix, p. 157, pi. v, fig. 

 6, a, b, c, 1884. 

 Test free, calcareous, imperforate, elliptical or oblong in out- 

 line, consisting of five visible, elongated, smooth segments. 



The segments are arranged in an inequilateral way about a Mil- 

 ioline axis. The two outer ones extending the whole length of 

 the shell with their ends overlapping and the aperture a horse 

 shoe-shaped opening, placed in the end of the larger segment. 

 This species of Miliolina was first recognized in the Miocene 

 of St Mary's, Maryland, by Isaac Lea and was described by him 

 under the name Miliola marylandica in his Contributions to Ge- 

 ology, 1833, pp. 215, 216, pi. 6, fig. 227, as follows:- "Shell el- 

 liptical, depressed in the middle, rounded at the edges, lobes in 

 conta(5t; mouth small, round, terminal, furnished with a large 

 tooth". 



In the above description of Mr. Lea no reference is made to 

 the smooth chara(5ler of the shell or to the number of segments 

 but his figure indicates a smooth form with three segments up- 

 on one side and is undoubtedly to be referred to the species Mil- 

 iolina seminulum Linne; length 0.60-0.74 mm., breadth 0.^30-0.47 

 mm. 



Hor is on and locality.— yi\oc&n&; Yorktown, James river, Va.; 

 Jones Wharf, St. Mary's, Md. 



Geological distribution. — Eocene to Recent. 



Genus LA GEN A Walker and Boys. 



Lagena globosa. 



Syn. Vermiciihim globosum Montagu, Test. Brit., p. 523, 1S03. 



Lagena globosa, Brady, Chal. Rep't., vol. ix, p. 452, pi. Ivi, figs, i, 

 2, 3, 1884. 

 Test subglobular, elliptical or pyriform, smooth, anterior mar- 



