32 



BUIXETIN 104, UNITED STATES NATIONAL MUSEUM. 



Distribution. — From all the records this is mainly a North Atlantic 

 species. Brady records its occurrence from the Faroe Channel, the 

 west coast of Ireland, and the Rockall Bank to North America, and 

 from the Azores and Canaries to the West Indies, with a station off 

 Pernambiico, Brazil, and another in the South Pacific. 



Goes and Flint record the species from the Gulf of Mexico and 

 Caribbean Sea, but this material is here referred to H. ovicula as a 

 variety. It differs decidedly from the typical northern material. 



I have liad the species in very typical form from five Albatross sta- 

 tions off the northeastern coast of the United States. Also I have 

 been fortunate in having from the United States National Museum a 

 series from Carpenter from a Valorous station. This shows the same 

 characters as the Albatross material from the northern station. It 

 consists of a series of chambers, elongate pyriform in shape, fitting 

 well over the neck of the preceding chamber, the tapering sides at 

 the apertural end nearly straight or but very slightly concave, the 

 end broad and truncate and the aperture without an elongate neck 

 except for the tapering shape of the chamber. The color is a light 

 yellowish brown and the surface decidedly sandy and although smooth 

 to the unaided eye under the microscope the surface layer of grains is 

 seen to be considerably roughened. 



Such characters are developed off the northeastern coast of the 

 United States, especially in deep cold water, but not in the Gulf of 

 Mexico, and the material from this region seems to be distinct. 



Hormosina carpenteri — material examined. 



HORMOSINA NORMANI H. B. Brady. 



Plate 7, fig. 1. 



Hormosina normani H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 1881, p. 52; 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 329, pi. 39, figs. 19-23.— 

 CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 1, 1910, p. 95, fig. 139.— Rhumbler, 

 Foram. Plankton Exped., teil 2, 1913, p. 441, fig. 144. — Pearcey, Trans. 

 Roy. Soc. Edinburgh, vol. 49, 1914, p. 1007. 



Description. — Test irregular, compgsed of a few nearly spherical 

 chambers, rapidly increasing in size as added, very irregularly 

 arranged; wall thin, of fine sand grains, with much cement, wall 



