90 Moll, 
MOLLUSCOIDA. 
varieties, 1, minor (Philippi) = affinis (Oalcara), and 2, sphenoiclea 
(Philippi) ; id. 1. c. pp. 403 & 404, pi. xxii. figs. 5 & 6. 
Terehratula arctica, sp. n., Friele, N. Mag. Naturvid. 1878, figured, Jan 
Mayen Island, near T. minor (Phil.). 
Terehratida {Waldheimia) cranium (Miill.). Young specimens have 
been described by Dali as Frenula and Ismenia Jeffrey si^ 1871 (nec 
Megerlia jeffreysiy Dali, 1877) ; Jeffreys, P. Z. S. 1878, pp. 466 & 467. 
Terehratula septata (Philippi, 1844) = septigera (Lov(5n, 1846), British, 
found in the Shetland Isles ; id. 1. c. pp. 405, 407 & 408. Also on the 
coast of Norway, never higher than 100 fath. ; G. 0. Sars, Moll. arct. 
Norveg. p. 11, pi. i. fig. 2. 
Terebratulina caput- serpentis (L.) and septentrionalis (Couth.) are two 
nearly allied, but distinct, species, both living in Arctic Norway ; Sars, 
1. c. pp. 10 & 11, pi. i. figs. 3 & 4. 
Meg erlia Jeffrey si (Dali, 1877, nec 1871), Semidi Islands, N.W. America; 
Jeffreys, P. Z. S. 1878, p. 407, pi. xxiii. fig. 3. 
Rhynchonellid^. 
Rhynchonella psittacea (Ohemn.), Franklin Pierce Bay and Cape 
Napoleon, Smith Sound, 15-25 fath. ; E. A. Smith, in Nares’s Narrative, 
&c., ii. p. 233. Also at Novaya Zemlya ; Leche, Sv. Ak. Handl. xvi. 2, 
p. 36. , 
llhynchonella sicula (Soguenza, MS.), sp. n., Jeffreys, P. Z. S. 1878, 
p. 413, pi. xxiii. figs. 5 & 6, English Channel, 690 fath. ; fossil in Sicily. 
Atretia gnomon (Jeffr.) differs by the short gnomon-shaped central 
septum from the Jurassic Dimer ella (Zittel) ; id. 1. c. p. 413, pi. xxiii. 
fig. 4. 
CRANIIDiE. 
Crania anomala (Mull.), an unusually thick variety, off the coast of 
Tunis in from 40 to 120 fath., = lamellosa (Seguenza), from Sicilian 
Pliocene beds; Jeffreys, 1. c. p. 414. 
Discinidj:. 
Discina atlantica (King) = fallens (S. Wood), off the west coast of 
Ireland, 1240 fath., &c. ; its plug of attachment in the lower valve is at 
least analogical to that of Anomia ; Jeffreys, 1. c. p. 415, pi. xxiii. fig. 7. 
Linqulid^. ' 
Lingula Mans (Swains.) lives at the Andaman Islands in mud and 
sandy clay at low-water mark, the shell being buried about a foot from 
the surface ; E. A. Smith (quoting Capt. Wilmer), P. Z. S. 1878, p. 820. 
On the habits of Lingula in Japan j it buries itself very quickly in the 
sand, and the peduncle forms a sandy tube by agglutination ; E. Morse, 
Am. J. Sc. (3) XV. p. 157. Otocysts described, habits of burrowing 
