60 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



Genus SAGENINA Chapman, 1900. 



SAGENINA FRONDESCENS (H. B. Bradj ). 



Plate 9, fig. 1; plate 14, fig. 1. 



Sagenella/rondescens H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 41, 

 pi. 5, fig. 1; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 278, pi. 28, fige. 14,15. 



Sageninafrondescens Chapman, Journ. Linn. Soc, vol. 28, 1900, p. 4, pi. ] , fig. 1. — 

 CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 71, fig, 93 (in text). 



Occurring as single specimens, or, at most, rarely, this species has 

 been noted from three stations: Dol52, Sulu Archipelago, Tawi Tawi 

 Group, 24-34 fathoms (44-62 meters); D5192, off north Cebu Island, 

 32 fathoms (58 meters); D5217, between Burias and Luzon, 105 

 fathoms (193 metere), bottom temperature 63.1° F. (17.2° C). 



As previous records indicate this seems to be a species frequent- 

 ing shallow, warm water. It is easily overlooked and is probably 

 much more common in the region than the records indicate, 



Sageninafrondescens — Material examined. 



SAGENINA DIVARICANS Cusliman. 



Plate 8, 

 Sagenina divaricans Cushman, Free. U. S. Nat, Mus,, vol, 38, 1910, p, 437, fig, 1, 



Description. — Test attached, tubular, very slender, uniform in 

 size, braaching at nearly regular intervals, with a wide angle, some- 

 times anastomosing; walls of coralline mud, somewhat roughened; 

 apertm-es at the ends of the tubes; color, white. 



Diameter of the tubes, 0.05 to 0.1 mm. 



Type specimen. — (Cat. No. 8229, U.S.N.M.) from Albatross station 

 5145, vicinity of Jolo, Jolo Archipelago, 23 fathoms (42 meters); 

 attached to hardened coral sand on the interior of a bivalve shell. 

 It also occurred at D5276, China Sea, vicinity of southern Luzon, 

 18 fathoms (33 meters), attached to Textularia. A single specimen 

 attached to Textularia rugosa was found in material from station 

 D5134, 25 fathoms (46 meters), Sulu Archipelago, near Basilan 

 Island. The two other stations in the area at which it has occurped 

 are D5148, Sulu Archipelago, vicinity of Siasi, 17 fathoms (31 meters), 

 and D5239, Pujada Bay and vicinity, 171 fathoms (312 meters). 



