Synopsis of the British Recent Foraminifera. Bij H. B. Brady. 905 



Lagena Imvigata, Kobertson, 1883, Trans. Geol. Soc. Glasgow, vol. vii. 

 p. 24. 



Common. 



Trifacial specimens of this species have been named by Seguenza 

 Trigomilina ohlonga, by Siddall Lagena trigono-ohlonga, and by Balk- 

 will and Millett Lagena trigono-lmvigata. Such examples are rare, but 

 are occasionally met with when the typical form is plentiful. 



Lagena faha, Balkwill and Millett. 



Lagena f aba, Balkwill and Millett, 1884, Journ. Micr. and Nat. Sci., 

 vol iii. p. 81, pi. ii. fig. 10. 



Galway (Balkwill and Millett). 



The authors above quoted describe trifacial specimens of the same 

 variety under the name Lagena trigono-faba. 



A very similar form to the Fissurina aperta of Seguenza, the latter 

 being slightly carinate. I greatly doubt the wisdom of attempting to 

 separate such specimens from Lagena Ixvigata and L. marginata. 



Lagena marginata. Walker and Boys. 



Serpula {Lagena) marginata, Walker and Boys, 1784, Test. Min., p. 2, 



pi. i. fig. 7. 

 Entosolenia marginata (pars), Williamson, 1848, Ann. and Mag. Nat. 



Hist., ser. 2, vol i. p. 17, pi. ii. figs. 15, 16. 

 (pars), Id., 1858, Eec. For. Gt. Br., p. 10, 

 pi. i. fig. 21. 

 Common. 



Trifacial specimens are described under the name Trigonulina glohosa 

 by Seguenza, and as Lagena trigono-elliptica by Balkwill and Millett. 

 The mucronate form is the Fissurina pedimculafa of Seguenza, and the 

 Lagena marginata, var. pedunculata of Balkwill and Millett. 



Lagena lucid a, Williamson, sp. 



Entosolenia marginata, var. lucida, Wilhamson, 1858, Eec. For. Gt. 

 Br., p. 10, pi. i. figs. 22, 23. 



Not uncommon. 



A variety of L. laevigata, broadest near the base. Apiculate speci- 

 mens of the same form constitute the Fissurina acuta of Eeuss. 



Lagena quadrata, Williamson, sp. 



Entosolenia marginata, var. quadrata, Wilhamson, 1858, Eec. For. Gt. 

 Br., p. 11, pi. i. figs. 27, 28. 



Scarcely separable in point of distribution from the other varieties of 

 L. marginata. 



Partially carinate specimens are named Lagena quadrata, var. 

 semialata by Messrs. Balkwill and Millett. 



Lagena hicarinata, Terquem, sp. 



Fissurina hicarinata, Terquem, 1882, Mem. Soc. geol. France, ser. .3, 

 vol. ii. Mem. III. p. 31, pi. i. fig. 24. 



