414 HENRY SIDEBOTTOM ON LAGENAE OF THE SOUTH-WEST PACIFIC 



consist of distinct " costae." There is a tendency in the central 

 costae to run up the neck, and if they were a little more de- 

 veloped we should have the L. qiiadralata Brady. They are 

 marked as occurring at fourteen stations. Locality : Chiefly Nos. 

 1, 3, 11, 17, 31. 



PL 19, fig. 5. This is the trifacial form, of which only two 

 specimens were found. 



Lagena formosa Sch wager (PI. 19, figs. 6-9). 



Layena fonnosa (pars) Schwager, 1866, p. 206, pi. 4, fig. 19. 

 Lagena formosa (Schwager) Brady, 1884, p. 480, pi. 60, figs. 

 10, 18-20. 



This seems to be an unsatisfactory species, and as Mr. Millett 

 remarks in his Malay Report, 1901, p. 624 : " This species seems 

 to differ from L. lagmioides only in the raised border which 

 immediately surrounds the body of the test." In these gatherings 

 there are over forty-five examples that agree fairly ^vell with the 

 Challenger figures, pi. 60, figs. 18-20, except that I cannot make 

 out any punctate ornament on the raised border which surrounds 

 the body of the test. When this does appear to be present, it 

 seems to me that it is caused by the tubuli in the wing being seen 

 through the raised border, which is transparent. In some of the 

 examples the raised border is absent, except just at the base, and 

 in others it is very feeble. The wing often splits as it approaches 

 the base of the test, as shown in PI, 19, fig. 6. Jjocality : Chiefly 

 Nos. 1, 3, 11, 17. 



Xote. The shape of the tests and their general appearance 

 are so near to Brady's Challenger figures, that in spite of the 

 -absence of the punctate ornament they must be placed under 

 L. formosa. 



PI. 19, fig. 7. Two specimens only, but they are large. They 

 differ little from the preceding. 



PI. 19, fig. 8. In these the raised border is very slight, but is 

 decorated as shown in the figure. The tube, when present, is 

 attached. I^ocalitj/ : Over thirty were found at No. 11, Very 

 rare at several other stations. 



PI. 19, fig. 9. Test compressed. The wing that surrounds the 

 body of the test gradually becomes less as it approaches the 

 -apiculate process at the base. The tubuli are confined to the 



