164 SUPPLEMENT. 



ally divided between them; and this difference is now and 

 then exhibited in the two sides of the same specimen. I 

 would remark that the byssal orifice in Waldheimia (to which 

 T. cranium has been referred by some authors) is circular and 

 entire ; in the present species it is semioval and incomplete. 

 Anomia terebratula of Linne, and T. plicata of Philippson. 



P. 14. T. CAPUT-SERPENTIS. F. Scandinavia (Sars and 

 others); Sicily (Seguenza). E. Norway, 20-300 f. (Sars) ; 

 Dalmatia (Brusina) ; Jamaica (Barret, fide Davidson) ; Aus- 

 tralia (J. W. Plower) ! T. marginata and T. quadrata of 

 Risso,/. Davidson. 



P. 17. Add TEREBRATELLA SPITZBERGENSIS, Davidson (Proc. 

 Zool. Soc. 1852, p. 78). I dredged a fresh and perfect spe- 

 cimen in 90-100 f., about 35 miles JST.N.W. of Unst. It is a 

 native of high northern latitudes, and occurs in a fossil state 

 at Uddevalla and Christiania. My specimen was not living ; 

 and it may possibly also be a relic of the glacial epoch. 



P. 18. ARGIOPE DECOLLATA. F. S.E. France (Fischer); 

 Rhodes (Mus. Jardin des Plantes) ! E. Guetaria, on the At- 

 lantic coasts of Spain, in 80 f. (Hidalgo, as Terebratula aperta). 

 T. ungula, Philippson, T. pectiniformis and perhaps T. dimi- 

 diata, Costa; not T. Soldaniana of Risso. 



P. 19. A. CISTELLULA should be A. LUNIFERA, Philippi 

 (Terebratula, afterwards Ortliis, lunifera, Phil. Moll. Sic. i. 

 p. 97, t. vi. f. 16, a-f). Orkneys, 35-40 f. (Thomas) ! E. 

 Mediterranean, from Corsica (Requien) to Malta (Mamo), 

 and ^Egean, 95 f. (Forbes) ! 



P. 21. A. CAPSULA. Guernsey, 8-20 f. F. Kirkoen, near 

 Christiania (Sars). 



p. 22. MEGERLIA (not TEREBRATELLA) TRUNCATA. E. Croix 

 in Morbihan (Preux, /. Tasle) ; lie de Noirmoutier in Vendee 

 (Pict,/. Fischer); Guetaria, N. Spain (Hidalgo). 



P. 23. RHYNCHONELLA PSITTACEA. In 1867 I dredged two 

 perfect specimens (one full-grown and the other young) off 

 Unst ; but they were dead. It is impossible to say whether 

 they are fossil or recent. According to Sars this species lives 

 in Finmark, as far south as Tromso, in 20-80 f.; " Drontheim" 

 was written by me in mistake for " Tromso." 



