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BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



recorded this species from about the British Isles. There is evidently 

 a great degree of variation in the development of the species. Some 

 of these variations are shown in the accompanying plate, those speci- 

 mens which are largest and finest developed showing a much greater 

 degree of ornamentation than do the smaller ones. 



In our material this species has occurred in 12 fathoms off Levuka, 

 Fiji, and at the Albatross stations given in Table 15. 



Table 15. — Lagena formosa — material examined 



LAGENA ORBIGNYANA (Seguenza) 



Plate 6, Figures 7, 8, 11 



This is another of those species to which a great many forms have 

 been assigned and a great many varietal names have been given. In 

 its general form it consists of a central body about which is a de- 

 pressed area surrounded by a raised region, outside of which are 

 developed supplementary keels. Some of the variations of this species 

 as developed in our material are figured here. The typical form of 

 the species has occurred only at Albatross stations in comparatively 

 deep water as shown in Table 16. 



Table 16. — Lagena orbignyana — material examined 



