22 



BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



LAGENA SEMINIFORMIS Schwager 



Plate 5, Figures 5a, b 



Lagena seminiformis Schwager, A^owara-Exped., Geol. Theil, vol. 2, p. 208, pi. 5, 

 fig. 21, 1866.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, p. 478, 

 pi. 59, figs. 28-30, 1884.— CusHMAN, U. S. Nat. Mus. Bull. 71, pt. 3, p. 37, 

 pi. 11, fig. 2, 1913. 



Lagena marginata var. seminiformis Millett, Journ. Roy. Micr. Soc, 1901, 

 p. 620, pi. 14, fig. 3. 



Test circular or ovate in front view with a comparatively long tubu- 

 lar neck, the whole surrounded by a broad, thin, peripheral keel 

 extended at each side of the base in long pointed projections; wall 

 smooth and usually nearly transparent. The figured specimen, which 

 is somewhat irregular at the base, probably should be referred to 

 Schwager's species, the types of which are from the Pliocene of 

 Car Nicobar. It has been recorded previously from the Pacific by 

 Brady and Millett, and there are a few other records mostly from the 

 Pacific, but these do not give figures. The figured specimen is from 

 Albatross Station H3881, latitude 15° 54' S., longitude 143° 6' W., in 

 1,568 fathoms. 



LAGENA AURICULATA H. B. Brady var. DUPUCATA Sidebottom 



Plate 5, Figures 3a, b 



Lagena auriculata H. B. Brady (in part). Rep. Voy. Challenger, Zoology, vol. 9, 



pi. 60, fig. 33, 1884. 

 Lagena auriculata var. dwplicata Sidebottom, Journ. Quekett Micr. Club, vol. 

 11, p. 422, pi. 20, fig. 23, 1912; vol. 12, p. 200, pi. 18, figs. 7, 8, 1913. 



There are a very few specimens in our collections that may be 

 referred to this variety, which is one of many named by Sidebottom. 

 It is evidently distinct from Brady's typical form, which should be 

 the specimen figured in the Challenger Report, pi. 60, fig. 29. It is 

 very close to one of the forms figured by Rymer-Jones as Lagena 

 vulgaris Williamson var. petasna-marginata. Figure 38 of Rymer- 

 Jones's plate should be the type of his variety, and that is evidently 

 quite a distinct thing from his Figure 39, which is much more like 



