270 FORAMINIFERA OF THE CRAG. 



depths not exceeding 100 fathoms. Fossil specimens have come from the Oligoceue 

 of Hermsdorf ; Miocene of Vienna and Italy ; and from the Pliocene of Gavrucha, 

 in Spain. 



In addition to the figured specimen (PI. I, fig. Gl) from Sutton, we have found 

 ■\vell-developed specimens from the same place in zone f. 



2. DiMOiiPHiNA COMPACTA, Brady, Parker, and Jones, 1S70. Plate I, fig. 66 



(" D. tuberosa"); Plate VII, fig. 17. 



Part I, 1866, Appendices No. I and No. II, Tables, No. 58 (" D. tuberosa "). 



DiMonPHiNA TUBEiiOSA, J., P., and B., 1S6G. Monogr. Foram. Crag, Appendices, 



No. 58, p]. i, fig. 6G. 

 — COMPACTA, B., P., and J., 1870. Trans. Linn. Soc, vol. xxvii,p. 230, 



pi. xlii, fig. 41. 



Chara.cters. — Shell elongate, subcylindrical, more or less arcuate, compactly 

 built; anterior extremity obtuse or truncate; posterior rounded. Margin even; 

 septa marked by faint lines. 



Fig. 66, PI. I, the specimen described in the " Monograph of Polymorphina," 

 1870, was separate from D. tuberosa on account of its marginuline form with 

 compressed oblique uniserial chambers. Fig. 17, PL VII, also has a quasi- 

 marginuline style of growth ; and, although it is not so elongate and narrow as the 

 other, its general outline and compact structure show its close alliance. 



D. compacfa, but having a slit-like aperture, has been met with by Mr. F. W. 

 Millett at St. Erth. Moreover, a compressed Dimorphine Polymorphina has been 

 found by Mr. Millett in these Pliocene beds, and described and figured by him in the 

 ' Trans. Roy. Geol. Soc.,' Cornwall, vol, xi, part 9, 1895, p. 658, pi. o, figs. 5, 6 

 a, b, as Polymorphina regularis, var. parallela. 



Occurrence. — Dimorpliina cornpacta is not known in the recent condition. 

 Excepting the above notice of its occurrence at St. Erth, the only record of its 

 having been found is from the Coralline Crag of Sutton, whence both of our figured 

 specimens were obtained. 



