DR. T. DAVIDSON ON EECEXT BRACHIOPODA. 169 



Sab. Dr. Gould's specimens wcro tlrodyed off the coast of Japan, lat. 30° 35' N., loni?. 

 130° 40' E., in 100 fathoms, sand, by Capt. Stevens of the ' Hancock,' and by A. Adams 

 at Satanomosaki in 55 fathoms, and at Gotto in 48 fathoms. 



Obs. This very interesting species was first discovered by Dr. Gouhl, liut ho does not 

 appear to have figured it. I did so, however, in 1871, from specimens given to me 

 by Mr. Adams. In his description. Dr. Gouhl observes that his shell, which might be 

 taken for a small Terebmtula citrea, is very thin and delicate, and further distinguished 

 by the absence of punctures. 



95. RuYNCHONELLA Grayi, Woodvvard. (Plate XXV. figs. 1-1 c.) 



Rhiinrhonella Grayii, S. P. Woodward, Ann. & Mag. Nat. Hist. 2nd scr. vol. xvi. p. 141', pi. x. figs. 16- 

 ]()f;, 185"); E. Suess, Ueber die Wohnsitze der Brachiopodcii, Sitzuugsb. k. Akad. Wlsscusch. Wien, 

 Bd. xxxvii. p. 219, 1859; L. Reeve, Conch. Icon., Monogr. of Rhynchonc/la, pi. xi. fig. 3, 1861; Dall, 

 Amer. Joui-n. of Conch, vol. vi. p. 153, 1870. 



Hcmitliyris Grayi, Dall, Proc. Acad. Nat. Sci. Philadelphia, p. 196, 1873. 



" Shell light horn-colour, dull, trigonal, depressed ; sides rounded, front truncated ; beak 

 small, acute; valves smooth, obscurely marked by lines of gro^\-ih, and strongly plaited 

 near the margin with four central plaits and three or four on each side, the furrows 

 obscurely striated; margins of valves sinuated in front and strongly toothed; foramen 

 minvite, completely tubular. Length nearly 8 lines, by G^ in breadth and 4 in depth. 



" This interesting and at present unique shell was sent, with other natural-history 

 objects, from the Feejee Islands by J. M'Gillivray, Esq., Xaturalist to the Surveying 

 Expedition under Capt. Deuham, of H.M.S. 'Herald.' No particulars as to its habitat 

 have been received. It differs from the known species of living Rhynchonella in its 

 lightness of colour, the others being black ; in the plication of the borders of its valves, 

 which reminds us of the fossil Bh. subplicata (Mantell), and Rh. lineata, Philippi, and 

 especially it differs in having a foramen quite separate from the hinge-line, by the deve- 

 lopment and union of the two elements of the deltidium, in this respect agreeing with the 

 ordinary adult condition of the fossil RhynchonelUe. Were it not for the remains of the 

 pedicle and traces of the mantle in its interior, we might have taken it for a pliocene fossil, 

 being exactly similar in its colour and dull transj)arency to the specimens of Rh. psittacea 

 found in the Crag at Norwich. The muscular impressions arc like those of the type, and 

 the interior has traces of unsymmetrical vascular markings." 



The above description was sent to me for pul^lication in 1855 by my valued and 

 eminent friend Dr. S. P. "Woodward ; and I added figures of the shell to my paper " On 

 Brachiopoda " pubhshed in the Ann. & Mag. Nat. Hist, for 1855. Singularly enough, no 

 other example of the species has been discovered. The type forms part of the collection 

 of shells in the Zoological Department of the British Museum. 



96. Rhynchonella nigricans, Sowerby. (Plate XXIV. figs. 10-19.) 



Rhynchonella mgricans, G. B. Sowerby, Proc. Zool. Soc. 18 IG, p. 91, and Thesaurus Conchyliorum, i. 

 p. 342, pi. Isxi. figs. 81, 82, 18J.6; Davidson, Proc. Zool. Soc. 1852, p. 81, jjI. xiv. figs. 30, 31, and Ann. 

 & Mag. Nat. Hist. 2nd ser. vol. xvi. p. 415, pl. x. fig. 18, 1855 ; E. Sucss, Ucber die Wohnsitze dcr Bra- 

 chiopoden, Sitzungsb. k. Akad. der Wissensch. Wicn, p. 220, 1859 ; L. Reeve, Couch. Icon., Monogr. of 



