136 Rev. Canon Norman's Revision 



Pleurotomella Saffardi, Verrill & Smitli, Trans. Conn. Acad. vi. (1884), 



p. 151, pi. xxxi. figs. 4, 4 a. 

 Pleurotomella Packardi, var. formosa, Dall, Bull. Mus. Comp. ZooU 



vol. xviii. (1889) p. 119. 



'Porcupine; 1869, St. 65, lat. 61° 10' N., lono;. 2° 21' W., 

 345 fathoms. ' Triton,' 1882, St. 13, lat. 59° 51' N., lon^. 

 5° 18' W., 570 fathoms, a single specimen {Jfffi'ey^)- 

 'Triton,' 1882, St. 11, lat. 59° 30' N., long. 7° 13' W., 

 555 fathoms {Norman). 



It has been found off the east coast of America in 85 to 

 1608 fathoms; by the 'Porcupine,' 1870, off the Lusi- 

 tanian coast, in 414-1095 fathoms ; by the ' Challenger ' off 

 the Azores, 1000 fathoms, off the Canaries in 1125 fathoms, 

 and off Culebra Island, West Indies, in t-)90 fathoms. A 

 fragment of this species has also been procured by Prof. 

 G. O. Sars in 400 fathoms, Storeggen, off the Norwegian 

 coast. 



Subgenus 2. Thesbia, Jefifreys. 



8. Mangilia nana (Lov^n). 



Columbella (Thesbia) 7iana, Jeffreys, Brit. Couchol. vol. iv. p. 359, 

 pi. Ixxxvii. fig. 4. 



Jeffreys placed this species in the genus Columbella, which 

 has an operculum, and differs widely from this little species. 



Subgenus 3. Teeetia ( Teres, emeud.), Bucq., Daiitz., & Dollf . 1882. 



9. Mangilia anceps (Eichwald). 



Pkurotoma anceps, Eichwald, Naturhist. vou Litli. und Volh. (1830), 



p. 226. 

 Pleurotoma teres, Forbes (nou Reeve), Rep. ^gean Invert. 1844, 



pp. 139 & 190, and Ann. & Mag. Nat. Hist. vol. xiv, (1844) p. 412, 



pi. X. lig. 3. 

 Defrancia teres, Jeffi-eys, Brit. Conch, vol. iv. p. 3G2, pi. xxxviii. fig. 5. 

 Raphitoma anceps, Ci. O. Sara, /. c, p. 219, pi. xvii. fig. 9. 

 Pleurotoma {Teres) anceps, Bucq., Dautz., & Dollf. Moll. Marina du 



Roussillon, 1883, p. 27 and woodcut. 



Subgenus 4. Bellardiella, P. Fischer, 1883 

 (Man. de Conchyl. p. 693). 



10. Mangiliagracilis (Montagu) , = Defrancia gracilis, Jeffrey.-:. 

 I have followed Fischer's arrangement in including the 



foreo-oing subgenera under Mangilia ; but the last two can 

 scarcely ultimately remain in that j)osition, the labial sinus 

 of their lip clearly distinguishing them from Mangilia proper. 

 I have kept the next genus distinct, as it appears to embrace 

 a natural group. 



