REPORT ON THE BRACHIOPODA. 31 



edge. On the dorsal lobe I observed the ramified bifurcated fine thread-like pallial nerves 

 as well as the pallial sinuses. (PL II. fig. 14, enlarged dorsal valve; 14, a, ventral valve; 

 A, adductor muscular impressions; B, ventral adjusters ; C, divaricators ; M, mantle; M', 

 edge of mantle ; N, dorsal pallial nerve ; D, dorsal pallial arteries.) The brachial or labial 

 appendages, which are unsupported throughout their entire length by a calcified lamina as 

 in Waldheimia, occupy a much smaller space in the interior of the shell, and while the 

 lateral branches are visibly shorter, the cirri are of considerable length (fiw. 14). 



I have named this species after H. N. Moseley, Esq., naturalist of the Challenger 

 Expedition. 



Terehratula uva, Broderip (PI. II. figs. 3, 4). 



Terebratula uva, Brod., Trans. Zool. Soc. Lond., vol. i. p. 142, pi. xxii., 1833. 



Terebratula uva, Sow., Tkes. Concli., vol. i. p. 353, pi. Ixx. figs. 53-55. 



Terebrahda uva, DaU, Cat. of the Recent Species of the Class Brachiopoda, Proc. Phil. Acad. Nat. 



Sciences, July 1873. 

 Terebratula uva. Reeve, Monograph of the Genus Terehratula, Conch. Icon., pi. iii. fig. ii. 



Shell ovate, longer than wide, white, or of a very light sahnon colour. Dorsal valve 

 uniformly convex, rather less deep than the opposite one, rounded in front. Ventral 

 valve convex. Beak moderately produced and truncated by a circular foramen, separated 

 from the hinge-line by a deltidium. Surface smooth, marked by a few concentric lines 

 of growth. Loop short, simple. Shell finely punctuated. Length 25, width 17, depth 

 15 mm. 



Habitat. — One dead shell (PL II. fig. 3, a, h) was obtained by the Challenger Expedition 

 at Station 163, April 4, 1874, lat. 36° 56' S., long. 150° 30' E., trawled in 120 fathoms 

 off Twofold Bay. A second example (PL II. fig. 4) was obtained off Buenos Ayres, at 

 Station 320, February 14, 1876, lat. 37° 17' S., long. 53° 52' W. Depth, 600 fathoms. 

 Bottom temperature, 2° 7 C. Sea bottom, hard ground. 



A third specimen, or rather two fragments of a dead shell, were dredged off Heard 

 Island, at Station 150, February 2, 1874, lat. 52° 4' S., long. 71° 22' E. Depth, 150 

 fathoms. Bottom temperature, 1°"8 C. Eock. 



Broderip states that his specimen of Terehratula uva was obtained by Captain Dare, 

 while dredging for Meleagrina margaritifera, attached to a dead sea-worn bivalve, at a 

 depth of from 10 to 12 fathoms, off Tehuantepec, Guatemala, Central America; bottom, 

 sand and mud. In the British Museum there are likewise some white specimens stated 

 to have been dredged near the Falkland Islands. 



Observations. — Terebratula, ttva varies much in shape, it is usually longer than wide, 

 and oval, but in some examples the length and depth did not differ materially. 



In addition to the species of Terehratula already named, the Challenger Expedi- 

 tion obtained one incomplete specimen of a Terehratula not sufficiently complete for 



