Manchester Memoirs, Vol. li. (1907), No. 9. 3 



tube. The sutural lines are sunk, except at the aboral 

 end, and the chambers are in consequence somewhat 

 inflated. The test is very slightly compressed. 



Three examples occur in which the test is straight, 

 and these bear a striking resemblance to Terquem's 

 Dentalina affinis, fig. 18, pi. 27 C70). It is possible that 

 this form would have been as well placed by putting it 

 into the Genus Lingulina. Rather rare. 



Lingulina, d'Orbigny. 



* Lingulina carinata, d'Orbigny (PI. 1, figs. 15-17, 



18? 19?). 



Lingulina carinata, d'Orbigny ('39), p. 124, pi, 1, 

 figs. 5, 6. 



L. carinata (d'Orb.), Williamson ('58), p. 14, pi. 2, 



figs- 33-35- 



L. carinata (d'Orb.), Brady ('84), p. 517, pi. 65, 

 figs. 16, 17. 



The examples are not typical, the aperture being 

 situated at the end of a short neck, with the exception of 

 about six, which have an entosolenian tube, as in fig. 17. 

 Some thirty specimens were found, most of them having 

 four chambers. Figs. 18, 19, show two forms which have 

 only two chambers, and may or may not belong to this 

 species ; four were found like fig. 18, and appear to have an 

 orifice at each end of the test. About twenty like fig. 19 

 occur, and it is possible these may be double specimens 

 of Lagena laevigata, but the number found rather pre- 

 cludes this idea. The type is better represented at 

 Palermo, though very rare. 



* Lingulina carinata (d'Orbigny), var. bi-carinata, 



nov. (PI. i, fig. 20). 

 This variety has two keels running round the edge of 



