Manchester Memoirs, Vol. Lxii. (19 17) 39 



[64. Sagrina dimorpha, Parker & Jones.] 

 64A. SiPHOGENERiNA dimorpha, (Parker & Jones.) 



Uvigerina (Sagrina) dimorpha, Parker & Jones, 1865, Phil. 



Trans., p. 363, pi. XVIII, fig. 18. 

 Sagrina dimorpha, Bradv,, 1884, Chall. Rep., vol. IX, p. 582, 



pi. LXXVI, figs. 1-3. 



A few typical examples collected from the upper horizons 

 of the Marl. These specimens are not straight but curved like 

 Dentalina and the earlier portion is biserial. The test is thin 

 with very numerous and well-marked perforations. I have 

 observed in one of these specimens the internal tube which is 

 a characteristic of the sub-genus and which no doubt exists in 

 the other individuals, but owing to their state of preservation 

 I was not able to see it in them. 



(The specimens are longer, thinner in the shell wall, and 

 the cusps between the chambers are much less pronounced than 

 in recent types, but in other features they agree tolerably well 

 with Sagrina dimorpha P. & J.) 



[65. Sagrina columellaris, Brady.] 

 65A. Siphogenerina columellaris, (Brady.) 



Sagrina columellaris, Brady, 1881, Ouart. Journ. Micr. Sci., 



vol. XXI, p. 64. 

 Sagrina columellaris, Brady, 1884, Chall. Rep., vol. IX, p. 581, 



pi. LXXV, figs. 15-17. 



Very rare, only three small specimens found in gathering 

 No. 3, 1893. T'h e t est is coarsely porous, has the usual series 

 of internal tubes and the aperture is a curved slit with a raised 

 border. 



(These three specimens are certainly not identical with 

 Brady's Sagrina columellaris. They differ in their extremely 

 tihin but coarsely perforated shell-wall. They appear to be 

 closely allied to a little species which is not uncommon in tropi- 

 cal shallow waters, figured first by Goes (G. 1882, R.R.C.JS. 

 p. 79, pi. IX, figs. 165, 166) under the name "Textularia 

 pennatula (Batsch) var. aculeata Ehrenberg, forma Bigener- 

 ina," and subsequently referred to by the same author (G. 1896. 

 D.O.A., p. 51) under the name of Sagrina pygmcea Goes. 

 The Biarritz specimens differ only in their circular section 

 M'hereas the recent individuals usually become compressed in 

 their later stages.) 



