24 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM 



This species originally described by Williamson is recorded from 

 several stations about the British Isles as well as from the Mediter- 

 ranean and Kerimba, but the specimens from the latter locality are 

 not figured, and are so widely removed from the British area that 

 they may prove quite likely to belong elsewhere. I have abundant 

 specimens from the Lord Bandon dredgings, Log. 39 in 20 fathoms, 

 Lough Hyne, off County Cork, Ireland, sent me by Joseph Wright. 

 These were evidently attached forms, and show much variation in 

 the height of the spire, but the main characters are very constant. 



Discorbis mamilla — Material examined 



DISCORBIS MEDITERRANENSIS (d'Orbigny) 



Plate 5, figures 2 a-c 



Rosalina mediterranensis d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 271, 



No. 2. 

 Discorbina mediterranensis Fornasini, Mem. Accad. Sci. Istit. Bologna, 



ser. 6, vol. 3, 1906, p. 61, pi. 1, fig. 1. — Heron-Allen and Earland, 



Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 118, pi. 9, figs. 12-14; 



pi. 10, fig. 1; Trans. Linn. Soc. London, ser. 2, vol. 11, 1916, p. 272; 



Journ. Roy. Micr. Soc, 1916, p. 50. 



This species has been recorded from about the British Isles by 

 Heron- Allen and Earland in the above references. They also include 

 other areas of the Pacific, but no figures are given. 



Our figures are after Heron- Allen and Earland. 



DISCORBIS MILLETXn (Wright) 



Plate 5, figures 3, 4 



Discorbina millettii Wright, Rep't. Belfast Nat. Field Club, ser. 2, vol. 3, 

 No. 6, Appendix No. 2, 1910-11 (1911), p. 13, pi. 2, figs. 14-17.— Heron- 

 Allen and Earland, Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 121, 

 pi. 10, figs. 5-7; Trans. Linn. Soc. London, ser. 2, vol. 11, 1916, p. 270; 

 Journ. Roy. Micr. Soc, 1916, p. 50; 1930, p. 182. 



Wright originally described this species from off the Irish coast and 

 also as a Pleistocene fossil. The records of Heron-Allen and Earland 

 from the British Isles are Clare Island region of Ireland, Moray Firth, 

 west of Scotland, off South Cornwall and off Plymouth. 



The species seems to be best characterized by the rows of fine 

 beads arranged in radial lines on the ventral side of the test. The 



