94 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



Girvanella frigida — material examined. 



GIRVANELLA SCHAUDINNI (Rhumbler). 



Plate 36, fig. 2. 

 IHyperammin vagans H. B. Brady (part), Rep. Voy. Challenger, Zoology, 



vol. 9, 1884, p. 260, pi. 24, figs. 7-9 (not figs. 1-6). 

 Tolypammina schaudinni Rhumbler, Arch. Prot., vol. 3, 1903, p. 277, fig. 126. 

 Girvanella schaudinni Rhumbler, Foram. Plankton-Exped., pt. 1, 1911, pi. 4, 



figs. 3, 4; pt. 2, 1913, p. 420. 



Description. — Test free at least in the adult, very irregularly coiled, 

 wall with a chitinous inner layer, the main wall composed of sand 

 grains with an abundance of yellowish or reddish brown cement; 

 aperture formed by the open end of the second or tubular chamber. 



Diameter, 0.1-0.3 mm. or more. 



Distribution. — Type station for this species is from the Plankton- 

 Expedition stations south of Boavista, Cape Verde Islands, 50-160 

 meters, and also recorded later by Rhumbler from off the Hebrides 

 in 1,524 meters. 



In the Albatross material I have had material seemingly referable 

 to this species from three stations southwestward from Cape Cod, 

 D2222, in 1,537 fathoms, bottom temperature 36.9° F.; D2229, in 

 1,423 fathoms, bottom temperature 37.7° F., and D2234, in 810 

 fathoms, bottom temperature 38.6° F. 



This species tends to show a connection toward such species as 

 Turritellella spectabilis in its irregularity of coiling and at the same 

 time on the other hand is surely related to the more typical species 

 of Girvanella. 



Girvanella schaudinii — material exammed. 



