42 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



the test spreads as a furcating tube attached to the host. The external surface of the 

 organism is very irregular in outline, owing to the haphazard mode of growth, and 

 the internal cavity may for the same reason become quite irregular and contorted. 



Diameter in the largest specimens, 8 mm. 



Dlstnhution.—OngmaWj described by the authors from the 

 Kerimba Archipelago off the southeastern coast of Africa, in com- 

 paratively shallow water, it has also been recorded by them from 

 South Cornwall, England, and off the west of Scotland. These 

 latter specimens from the Atlantic, however, were of much smaller 

 size than the tropical ones. In the Albatross material I have been 

 unable to find any material referable to this species. The authors 

 give a long discussion of the synonymy of this species in the paper 

 last referred to in the synonymy given here. 



Genus RHAPHIDOSCENE Vaughan Jennings, 1896. 



Rhaphidoscene. Vaughan Jennings (type, R. conica Vaughan Jennings) Journ. 

 Linn. Soc, vol. 25, 1898, p. 320.— Rhumbler, Arch. Prot., vol. 3, 1903, 

 p. 225. — Heron-Allen and Earland, Trans. Zool. Soc, vol. 20, 1915, p. fiOS. 



Descrijytion.— Test attached, conical, base broad extending to a 

 point at the outer end; chamber single; wall composed of sponge 

 spicules arranged lengthwise of the test with a cement of white 

 calcareous amorphous material; aperture indistinct, at the outer 

 pointed end of the test. 



The single species of the genus seems to be largely limited to cold 

 waters of the North Atlantic, although Heron-Allen and Earland 

 place in the same category a form found by them in the Kerimba 

 Archipelago off the southwestern coast of Africa. 



RHAPHIDOSCENE CONICA Vaughan Jennings. 



Plate 17. 

 Rhaphidoscene com'm Vaughan Jennings, Journ. Linn. Soc. London, vol. 25, 1896, 

 pp. 320-321, pi. 10.— Chapman, The Foraminifera, London, 1902, p. 117, pi. 

 5, fig. H.— Rhumbler, Arch. Prot., vol. 3, 1903, p. 226, fig. 50 (in text).— 

 Heron- Allen and E.4.rland, Trans. Zool. Soc, London, vol. 20, 1915, p. 608, 

 pi. 46, figs. 16, 17 [?]. 



Descri'ption. — Test attached, conical, basal end broad, tapering to 

 the pointed apertural end, single chambered ; wall composed of long, 

 acerose sponge spicules extending iiearly the whole length of the test 

 laid longitudinally side by side, interspersed with some fine sand 

 grains and cement ; color whitish ; aperture not definite but probably 

 at the outer pointed end. 



Diameter, 1 mm. 



Distribution. — The type station for this species is ojie of the Porcu- 

 pine dredgings in the Faroe Channel in 440 fathoms, attached to the 

 test of Botellina labyrinthica. Heron-Allen and Earland record the 

 occurrence of a specimen from haul 119, Goldseeker, also in the Faroe 

 Channel, 60° 34' N., 4° 32' W., depth 965 meters, attached to a 

 pebble. Tliis specimen was much larger than the type, "being 



