HENRY SIDEBOTTOM ON LAGENAE OF THE SOUTH-WEST PACIFIC. 413 



PI. 18, fig. 28. In this case very nearly the whole carina is 

 double, and just wide enough to allow the opening of the cellular 

 passages to be distinctly seen. The tube is twisted and turned 

 to one side. Sixteen found. Locality : Chiefly No. 19. 



PI. 18, fig. 29. Two specimens only occur. In the one figured, 

 the band at the edge is practically flush with the body of the test, 

 in the other case it slightly projects. Locality : Nos. 4, 13. 



There is a third test on the slide, in which the orifice is more 

 produced and the carina is more distinctly double, the space being 

 filled with shell-growth or granulated matter. In size and contour- 

 it is the same as the above. Locality : No. 32. 



PI. 19, fig. 1. Test a little compressed. Around its edge are- 

 two ridges, connected at regular intervals by cross-bars. In the 

 centre, between the cross-bars, there is a circular depression, 

 which is not the orifice of a large pore, though very likely the 

 base of each depression is porous. Orifice circular. This solitary 

 example might with almost equal propriety have been placed 

 under X. bicarinata. Locality : No. 30. 



PI. 19, fig. 2. The test is not much compressed. The ento- 

 solenian tube is straight. L^ocality : Uncertain. Very rare. 



PI. 19, fig. 3. This is a very much compressed variety, and 

 has a double row of pores showing round the edge of the test ;. 

 these are separated by a ridge, so that with the two lateral 

 carinae the test in a feeble way resembles L. orhignyana. 



Mr. Morton, 1897, pi. 1, fig. 5, refers to numerous specimens 

 found in marine clay, Maine, America, which appear to be much 

 in the same condition. 



Fig. oh gives a fair representation of the edge of the test, a& 

 far as I can make it out. Locality : No. 8. Only one occurs. 



Lagena lagenoides Williamson var. tenaistriata Brady 



(PI. 19, figs. 4, 5). 



Ijagena tuhidifera var. tenuistriata Brady, 1881, Quart. Journ.. 



Micr. Sci., vol. 21, N.S., p. 61. 

 Lagena lagenoides Williamson var. tenuistriata Brady, 1884, 



p. 479, pi. 60, figs. 11, 15, 16. 



There is a large number of this handsome form, and it agrees 

 best with the Challenger figure, pi. .60, fig. 11. Brady writes of 

 the markings as " striae," and in most of these specimens they 



