FORAMINIFERA OF THE ATLANTIC OCEAN. 83 



Genus SYRINGAMMINA H. B. Brady, 1883. 



Syrinqammina H. B. Brady (type, S . fragillissima H. B. Brady), Proc. Roy. Soc. 

 London, vol. 35, 1883, p. 155; Rep. Voy. ChaUcnger, Zoology, vol. 9, 1884, 

 p. 242.— Rhumbler, Arch. Prot., vol. 3, 1903, p. 224.— Pearcey, Trans. 

 Roy. Soc. Edinburgh, vol. 49, 1914, p. 997. 



Description. — Test free or adherent, consisting of a bulbous base 

 and many branching arras or of masses of anastomosing tubes in a 

 rounded mass, wall of fme arenaceous particles with a small amount 

 of inorganic cement; apertures at the extremities of the tubular 

 portions. 



Two species are known, S. fragillissima, dredged by the Triton in 

 the Faroe Channel, and S. minuta Pearcey, from the Antarctic and 

 probably off the Azores. 



SYRINGAMMINA FRAGILLISSIMA H. B. Brady. 



Plate 31, figs. 1, 2. 



Syringamrmna fragiUissima H. B. Brady, Proc. Ro}'. Soc. London, vol. 35, 1883, 

 p. 155, pl3. 2, 3; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 242, figs. 

 9a-c (in text).— Rhumbler, Arch. Prot., vol. 3, i903, p. 224, fig. 47 (in text.) 



According to Brady this form is as follows: 



Test free, consisting of a rounded mass of branching, inosculating tubes, radiat- 

 ing from a common centre, and arranged in more or less distinct concentric tiers 

 or layers wliich are marked by the formation at intervals of a network of lateral 

 branches. Walls arenaceous, composed of nearly uniform fine sand, with little 

 or no inorganic cement. Apertures terminal, situated at the peripheral ends of the 

 tubes, closed in with loosely aggregated sand grains. Colour dark gray wlien wet, 

 drying to a much hghter tint. 



Diameter, about IJ inches (38 mm.). 



Distrihution. — All that is known of this species are the two speci- 

 mens dredged by the Triton in the Faroe Channel. A very full 

 discussion of these specimens will be found in the Challenger Report 

 (vol. 9, 1884, p. 243). The figures and description are from Brady. 



Genus JACULELLA H. B. Brady, 1879. 



Jaculella H. B. Brady (type, /. acuta H. B. Brady), Quart. Journ. Micr. Sci., 

 vol. 19, 1879, p. 35. — Butsculi, in Bronn, Klaasen und Ordnungeu dea 

 Thierreichs, vol. 1, 1880, p. 193.-11. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 255.— Rhumbler, Arch. Prot., vol. 3, 1903, p. 273.— 

 CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 70. 



Description. — Test free, elongate, conical, widest at the apertural 

 end, opposite end typically closed; wall comparatively thick, com- 

 posed of sand grains firmly cemented, rough on the exterior; 

 aperture formed by the open end of the tube, circular. 



Although the tube is closed in complete specimens the distinction 

 between proloculum and second chamber is slight, more definitely 



