720 DEEP WATER MOLLUSKS AND BBACHIOPODS—DALL. vol.xvil 



distinct from that of the Atlantic, following Carpenter, like whom I 

 had only the stunted specimens from shallow water. But the deep- 

 water dredgings of the Albatross having supplied a sufficient series of 

 normally grown specimens of all ages and sizes, I have convinced 

 myself, after a thorough comparison of many specimens from each 

 region, that there is no good ground for a separation of them, even 

 varietally. The Pacific form is the typical T. caputserpentis (not the 

 eastern American septentrionaUs) and neither in the shells nor in the 

 soft parts does there appear to be any marked or constant difference. 

 They could not be separated if once mixed in the same tray. 



TEREBRATULINA KIIENSIS, Da 11 and Pilsbry. 



Plate XXXII, figs. 8, 9. 



Terebratidina (unfiidcala, Carpenter var.f) kiiensis, DALLand Pilsbrv, Nautihis, 

 V, p. 18, pi. 1, figs. 4, 5, 1891. 



Stations 2871, 3316, and 3205, in 559 fathoms, off the entrance to Fuca 

 Strait; in 309 fathoms off the island of Unalaska in Bering Sea; and in 

 240 fathoms off Santa Cruz, Cal. ; temperature, 38° to 44° F. Also 

 from the coast of the province of Kii, Japan, Stearns; and from the 

 Philippine Islands, NE. from Mindanao, in 82 fathoms, Challenger ex-pe- 

 dition. Figured specimen No. 1284G3, U.S.Isr.M.'' 



This fine brachiopod, which when young approaches closely some 

 broad varieties of T. caputserpentis, is shown by the Albatross material 

 to be a distinct species. It may be known by its rounder outline, 

 larger size, and the fact that the sculpture of the peripheral parts of 

 the shell becomes obsolete, aiul is represented by grooves with flattened, 

 much wider interspaces, instead of the rounded threads, characteristic 

 of the surface of T. caputserpentis at all ages, and T. Kiiensis when 

 young. The extension of its range, made known by the Albatross 

 dredgings, is very remarkable and interesting. 



Family Terebratellidje. 



Genus EUDESIA, King. 



This name was proposed at the same time as Waldheimia, King 

 (^Magellania, Bayle), which was discarded as preoccupied. Subse- 

 quently it has been treated as* a subgenus of the newer name 

 Magdlania. Beecher has shown that the austral forms typified by 

 Magellania, on account of their different development, must be sepa- 

 rated in a different subfamily from those of the northern hemisphere. 

 Eudesia belongs with the latter. These again are separable into at 

 least two generic groups, Dallina, of Beecher (apparently a descendant 

 of Antipty china, Zittel), which includes those with a continuous cardinal 

 plate, strong median septum in the brachial valve, and no buttresses 

 to the teeth of the pedicle valve. The other group comprises Eudesla 

 and Macandrevia., and has the cavity of the pedicle valve under the 

 hinge separated into three cavities by two buttresses which support 



