DE. T. DAVIDSON OX EECEXT BRACHIOPODA. 109 



Terebratula erylhroleuca, Quoy & Gaimard, Voyage de I'Astrolabc, vol. iii. p. j J7, j)l. Ixsxv. figs. 8, 9, 

 183J?; Deshayes, Nov. cd. Lamarck, Au. sans A^eit. vol. vii. p. 3JU, 18:3(]. 



Terebratula sanyuinca, G. B. Sowerby, Thes. Couch, vol. i. p. 357, pi. Ixxi. figs. "1-73, 1846. 



Terebratula pulchella, G. B. Sowerby, ibid. p. 3G0, pi. Ixxi. figs. 105-107, 18 Ki. 



TerehrateUa sanijuiiwa, Davidson, Auu. & Mag. Nat. Hist. 2ud ser. vol. ix. p. 3G8, 1852. 



Mvgerl'ia pulchella, Davidson, ibid. p. 369, 1852. 



TerehrateUa xanijuhiea. Woodward & Gray, Cat. of Bracli. in Brit. Mus. p. 90, 1853. 



Meijerleu yukhella, Woodward & Gray, ibid. p. 90, 1853. 



Terebratella sanyuinea, E. Suess, Ueber die Wohnsitze dor Braehiopodcn, Sitzungsb. k. Akad. dcr 

 Wisscnsch. Wien, Bd. xxxvii. p. 205, 1859. 



Terebratula {Terebratella) sanyuineu, lleeve, Conch. Icon. pl. vii. fig. 25 «, Z), c, and Ann. & ISIag. Nat. 

 Hist. 3rd scr. vol. vii. p. 178, 1861. 



Ismenia saiir/uinea, Adams, Ann. & Mag. Nat. Hist. 3rd scr. vol. xi. p. 99, 1863; Dall, .Vmcr. .Jouni. 

 Conch, vol. vi. p. 127, 1870. 



Megerlia sanyuinva, Davidson, Proc. Zool. Soe. 1871, p. 308, pl. xxxi. figs. 1, 2. 



Megerlia samjuinea, var. lleevei, Davidson, ibid. 1871, p. 308, pl. xxxi. fig. 3. 



Megerlea sanguinea, Dall, Proc. Acad. Nat. Sci. Philadelphia, p. 187, 1873; Davidson, Report on the 

 Brachioijoda, Voyage of II. M.S. 'Challenger,' Zool. vol. i. p. 52, pl. iii. fig. 14, 1880. 



Frenulu sanguinea, Zittel, Ilaudbuch der Paliiontologic, p. 708, 1880. 



Megerlea sanguinea, G. Dunker, Index [Mollusc, maris Japouici, p. 353, 1882. 



Terebratella sanguinea, E. Deslongehamps, Etudes critiques sur des Brachiopodcs nouveaux ou peu 

 connus, p. 102, jil. xvii. figs. 1-4, 1884. 



Shell thin, small, somewhat transversely oval, and quite regular, or almost circular, 

 as broad as long, smooth, almost polished, with faintly marked concentric lines of 

 growth. From white or yellow to a livid red, marked with brownish or reddish streaks, 

 freckled with bright blood-red blotches, bounded on each side by white and yellowish 

 streaks and patches or spots of red, which radiate towards the margin. Dorsal valve 

 moderately convex, with a more or less defined mesial dejoression, commencing at about half 

 the length of the valve and extending to the front. Ventral valve rather deeper than the 

 dorsal one, uniformly convex, sometimes either slightly keeled or flattened along tlie 

 middle. Beak moderately incm-ved and truncated by a circular foramen, very slightly 

 separated from the hinge-line by a small deltidium ; beak-ridges well defined, leaving a 

 flattened space or area between them and the hinge-line. Shell perforated by canals. 

 In the interior of the dorsal valve the loop does not extend much further than to about 

 two tliirds of the length of the valve ; it is three times attached— first to the hinge-plate, 

 then before attaining half its length to a longitudinal septum, and a third time by 

 vertical lamina?, which connect the lateral reflected extremities of the loop with the 

 median septum. Length 7 lines, width 7, depth 3i lines. 



Eab. Dredged by the ' Challenger ' Expedition on the reefs of Zamboanga, at 10 fathoms 

 depth. One example was obtained by the * Astrolabe ' Expedition at Tongatabu. I 

 have very fine and large examples from off" the Island of Zebu, in the Philippines, and off 

 Honolulu, in the Sandwich Islands, attached to corals and stones. The Eev. J. Tenisou 

 Woods sent me specimens of the shell, both white and coloured, from uear Bird's Island, 

 North Australia. Mr. Adams dredged it at Mino-Sima, in 63 fathoms, and at Gotto in 

 48 fathoms. It was also obtained by Mr. E. Deplanclie not far from llie coast of 

 Tahiti, and recently off Phare, jS^ew Caledonia. The variety T. jndchella is stated by 



