FORAMINIFERA OP NORTH PACIFIC OCEAN. 



71 



JACULELLA OBTUSA H. B. Brady. 



Jaculella obtusa H. B. Brady, Proc. Roy. Soc. Edinburgh, vol. 11, 1882, p. 714; 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 256, pi. 22, figs. 19-22.— Goes, 

 Kongl. Svensk. Vet. Akad. Handl., vol. 25, no. 9, 1894, p. 20, pi. 4, figs. 

 87-89; pi. 5, figs. 90, 91; Bull. Mus. Comp. Zool., vol. 29, 1896, p. 23.— 

 Rhumbler, Arch. Protistk., vol. 3, 1903, p. 273, fig. 123 (in text). 



Description. — Test elongate, straight, tubular, proximal end closed, 

 obtusely rounded, distal end but slightly broader, its open end form- 

 ing the aperture, wall thick, composed of sand grains, 

 firmly cemented, rough, grayish in color. 



Length 10-15 mm. 



Distribution. — Known from a single Challenger sta- 

 tion, Xo. 237, in 1,875 fathoms, east of Japan. Goes 

 found specimens from Albatross station D3407, 885 

 fatbpms, off the west coast of Mexico. I have found 

 numerous other specimens from this latter station and 

 have a few specimens from Bering Sea, Albatross sta- 

 tion D3501, in 6S8 fathoms. 



This species is often nearly cylindrical or wider in the 

 middle than at either end, the texture rather less firm 

 than is that of J. acuta. WM 



T4w 



Genus SAGENINA Chapman, 1900. 



Sagenella II. B. Brady (type, S. frondescens H. B. Brady), 

 Quart. Journ. Micr. Sci., vol. 19, 1879, p. 41; Rep. Voy. 

 Challenger, Zoology, vol. 9, 1884, p. 278 (not Sagenella Hall). 



Sagenina Chapman, Journ. Linn. Soc, vol. 28, 1900. — Rhumb- 

 ler, Arch. Protistk., vol. 3, 1903, p. 221. 



Description. — Test attached, tubular, dichotomously 

 or irregularly branching, often anastomosing; wall are- 

 naceous; apertures at the ends of the branches. 



This genus contains several species, all occurring as 

 far as known in the eastern seas and in tropical waters 

 or in some cases subtropical as well. 



SAGENINA FRONDESCENS (H. B. Brady). 



Sagenella frondescens H. B. Brady, Quart. Journ. Micr. Sei., vol. 

 19, 1S79, p. 41, pi. 5, fig. 1. — Butschli, in Bronns Klassen 

 und Ordnungen des Thierreichs, vol. 1, 1880, p. 195, pi. 5, 

 fig. 16.— II. B.Brady, Rep. Voy. Challenger, Zoology, vol.9, 

 1884, p. 278, pi. 28, figs. 14, 15. 



Sagenina frondescens Chapman, Journ. Linn. Soc, vol. 28, 1900, 

 p. 4, pi. 1, fig. 1. — Rhumbler, Arch. Protistk., vol. 3, 1903, 

 p. 221, fig. 46 (in text). 



Description. — Test attached, tubular, stout, the tubes forming an 

 irregular network over the surface to which they are attached, dicho- 

 tomously branching or irregular and often anastomosing to form a 



Fig. 92.— Jacu- 

 lella OBTUSA. 

 X 15. 



