60 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



LAGENA TRUNCATA H. B. Brady. 



Plate 11, figs. 5, 6. 



Lagcna truncaia H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 0, 1884, 

 p. 457, pi. 56, figs. 31, 32.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 3, 1913, 

 p. 31, pi. 19, fig. 3.— Pearcey, Trans. Roy. Soc. Edinb., vol. 49, 1914, 

 p. 1017. 



Descriptio)}. — Test elongate, pyriform ; greatest breadth below the 

 middle, aboral end broadly rounded ; apertural end obtusely rounded ; 

 wall smooth; aboral end with two or more short spines; aperture 

 radiate. 



Length, 0.40-1 mm. 



Distribution. — In the Challenger report Brady records this species 

 from two Atlantic stations, one in the North Atlantic, southwest of 

 the Canaries, in 2,740 fathoms (5,017 meters), and one in the South 

 Atlantic, west of Tristan d'Acunha, in 2,200 fathoms (4,024 meters). 

 In the volume on Summary of Results of the Challenger Expedition 

 it is also recorded from station 2, in 1,945 fathoms (3.557 meters), 

 and station 13, in 1,900 fathoms (3,475 meters), between Teneriffe 

 and Sombrero Islands. Pearcey records it from the Antarctic at two 

 Scotia stations, also in deep water. Brady records it also from the 

 South Tacific, in 1,825 and 2,070 fathoms (3,338 and 3,786 meters), 

 and 1 have had it from a Nero station in the North Pacific, in 1,321 

 fathoms (2,424 meters). It is therefore a species rather widely dis- 

 tributed in deep, cold waters. 



LAGENA TUBULIFERA E«ger. 



Lagena tubuHfera Egger, Abh. kon. bay. Akad. Wiss. Miinchen, CI. II, vol. 18, 

 1893, p. 324, pi. 10, figs. 6, 7. 



Under this name Egger describes a new species of Lagena from 

 Gazelle station 156, in 3,950 meters (2,160 fathoms), between Monte- 

 video and Tristan d'Acunha. As Brady has already used the name 

 tubulifera in 1881, by the rules of priority this name can not be used 

 again under this genus. Therefore if Egger's species proves to be a 

 valid one, a new name will have to be made for it. 



LAGENA UNGUIS Heron-Allen and Earland. . 



Plate 11, fig. 7. 



Lagena unguis Heron-Allen and Earland, Proc. Roy. Irish Acad., vol. 31, pt. 

 64, 1913, p. 86, pi. 7, figs. 1-3 ; Journ. Roy. Micr. Soc, 1916, p. 46. 



Description. — " Test inequilateral, compressed, extremely hyaline, 

 resembling L. marginata^ but with a continuous marginal carina pro- 

 duced considerably at the oral extremity of the shell and curved 

 like a ' filbert-shaped ' finger-nail. The aperture is placed in a 

 depressed opening on the outer or convex surface of the ' nail ' just 



