322 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.54. 



Volutidae, to which family it must be referred as one of the degen- 

 erate abyssal forms which have lost their columellar plaits. A mag- 

 nificent species related to CaUiotectum, named Prodallia dalli and 

 figured by Bartsch in 1915, was dredged in very deep water among 

 the Philippines. 



The other named groups among the Turritidae of the Pacific coast 

 are not involved in synonymic difficulties and therefore need not be 

 discussed here. 



Preliminary list of names heretofore applied to divisions of the Turritidae with 



references and notes. 



Acamptogenotia Rovereto, 1899, see Pseudotoma Bellardi not Stephens. 



Aforia Dall, 1889, Bull. Mus. Comp. Zool., vol. 18, p. 99. Type, PI. circinata 

 Dall. 



Agathotoma Cossmann, Rev. Crit. Pal., 3me Ann^e, p. 1, 1889. New name for 

 Ditoma Bellardi 1875, not Illiger, 1807. See Essais, vol. 3, p. 192, 1899. 



? Aliceia Dautzenbeeg and Fischer, M6m. Soc. Zool. de France, vol. 10, p. 

 182, 1897. Type, A. aenigmatica Dautzenberg and Fischer, M6m. Soc. Zool. de 

 France, vol. 10, p. 182, 1897, Azores. Nepionic shell, perhaps the young of a 

 Clavatula. 



Amblyacrum Cossmann, 1889, Cat. 111., p. 295. Essais, vol. 2, p. 137. Type, 

 PL rugosa Deshayes. This is a Surcula with short canal, moderate anal sulcus 

 and Drillia-like sculpture. No varix behind outer lip. 



Ancistro syrinx Dall, 1881, Bull. Mus. Comp. Zool., vol. 9, p. 53. Type, A. 

 elegans Dall. l=Cochlespira Conrad, 1865, Amer. Journ. Conch., vol. 1, p. 20. 



Anna Risso, 1826, Eur. M6r., p. 214, fig. 68. Type, A. massena Risso, Eur. M6r., 

 p. 214i=Buccinum scacchianum Philippi. Referred to Pleurotomidae by various 

 authors but really a Cantharus. 



Antiplanes Dall, Proc. U. S. Nat. Mus., vol. 24, No. 1264, p. 513, 1902. Type, 

 Surcula perversa Gabb, 1865. 



Aphanitoma Bellardi, Mon. PI., 1875, p. 241. Type, Turbinella labellum (Bon- 

 elli), Bellardi and Michaud. Fischer, Man., p. 594, 1883, names as example 

 A. pecchiolii Bellardi. Resembles a small Oenota with two plications on the 

 pillar. Zittel, Man. (French ed.), p. 286, 1887, accepts the type as PI. lahellum. 

 Not Aphanitoma Cossmann. 1883. 



Apiotoma Cossmann, 1889, Cat. Illustr., p. 263. Essais Pal., vol. 2, p. 73, 1896. 

 Type, PI. pirulata Deshayes. Eocene. Slender Genofa-like shell. 



Asthenotoma Harris and Burrows. Eocene and Olig. Paris, 1891, p. 113. New 

 name for OUgotoma Bellardi, 1875, not of Westwood, 1836. Type, PI. basterotii 

 Desmoulins, 1842. Shell small, like small Drillia without varices. Urate outer 

 lip, simple sinuate pillar. Sculpture of spiral cords. Miocene. 



Atoma Bellardi, Mon. PL, 1875, p. 324. Type, A. hypothetica Bellardi, Mon. 

 PI., 1875, p. 324 (1847). Not of Latreille 1796 {A.TR(±n.)=Enatoma Rovereto, 

 Syn. 1899, p. 3. 



Awateria Suter, New Zealand Geol. Surv., Pal. Bull. No. 5, pt. 1, p. 57, 1917. 

 Type, A. streptophora Suter; Pliocene, New Zealand. 



Bathybela Kobelt, Icon. Eur., vol. 3, p. 276, 1905. Type, Thesbia nudator 

 Locard. 



Bathyclionella Kobelt, Icon. Eur., vol. 3, p. 279. Type, PI. quadruplex Wat- 

 son ; abyssal. Apparently not related to Clionella. 



Bathytoma Harris and Burrows, Eocene and Olig. Paris, 1891, p. 113, new 

 name for Dolichotoma Bellardi, not Hope, 1839. Cf. Megasurcula Casey, and 

 Cryptoconus v. Koenen. 



