Manchester Memoirs, Vol. I. ( 1 906), No. 5. 3 



Lagena striata (d'Orb.), Brady, Parker and Jones ('88), 

 p. 222, pi. 44, fig. 28. 



The examples are small, and the striae become very 

 faint between the body of the test and the neck. More 

 typical examples are found at Palermo, where this species 

 is also more plentiful. 



* Lagena sulcata, Walker and Jacob, sp. 



Lagena striata, Williamson ('48), p. 13, pi. i, figs. 6, 8. 



L. vulgaris, vzx. perlucida, Williamson ('58), p. 5, pi. i, 

 fig. 8. 



L. vulgaris, var. striata, Williamson ('58), p. 6, pi. i, 

 fig. 10. 



L. sulcata (W. & J) Brady ('84), p. 462, pi. 57, figs. 

 23, 26. Very frequent. 



* Lagena sulcata, var. interrupta, Williamson. 



Lagena striata, var. interrupta, Williamson ('48), p. 14, 

 pi. I, fig. 7. 



L. vulgaris, var. interrupta, Williamson ('58), p. 7, pi. i, 

 fig. II. 



L. sulcata, var. interrupta (Williamson), Brady ('84), 

 p. 463, pi. 57, figs. 25, 27, Frequent. 



*Lagena semistriata, Williamson. (PI. i, figs. 4, 5.) 

 Lagena striata, var. /3, semistriata, Williamson ('48), 

 p. 14, pi. I, figs. 9, 10. 



L. vulgaris, var. semistriata, Williamson ('58), p. 6, 

 pi. I, fig. 9. Very frequent. 



The Delos examples of these three forms run into 

 each other. Fig. 5 shows how closely some specimens of 

 L. semistriata approach L. laevis, the stris being repre- 

 sented solely by very minute tubercles on the bottom of 

 the test. Z. laevis not being represented in the Delos 



