992 MR. F. A. POTTS ON 
its single pair of tentacles. I should like to point out that both 
genera were originally described as possessing only a single pair 
of peristomial processes, and that we are not ina position to 
correct the description of the type-species. 
LITERATURE. 
(1) Chaparkpr, Epovarp.—Les Annélides Chétopodes du 
Golfe de Naples. Seconde Partie. (Pp. 76-94 for 
Cheetopterids. ) 
(2) Crosstanp, Crrit.—On the Marine Fauna of Zanzibar and 
British East Africa, from Collections made by Cyril 
Crossland in the Years 1901 and 1902.— Polycheeta. 
Part I. Proc. Zool. Soe. London, 1908, vol. i. pp. 169- 
176. 
(3) Crosstanp, Cyrin.—The Polycheta of the Maldive 
Archipelago, from the Collections made by J. Stanley 
Gardiner in 1899. Proce. Zool. Soe. London, 1904, 
vol. i. pp. 270-286, pls. xvili., xix. (For Phyllocheto- 
pterus aciculigerus and gardinert.) 
(4) Expers, Howarp.—A Study of the Life-History and Habits 
of Cheetopter us variopedatus Renier et Cl: aparede. Journ. 
Morph, Philadelphia, vol. xx. 1909, pp. 479-531, 
pls. 1.111 
(5) Gravier, C.—Annélides Polychétes de la Mer Rouge. 
Nouv. Arch. Mus. d’Hist. Nat. sér. 4, t. viii, 1906. (For 
Telepsavus bonhourei, see p. 191, pl. iii. figs. 209-213.) 
(6) Gravier, C —Sur la régénération des extrémités du corps 
chez le Chétopteére et chez la Marphyse sanguine, Bull. 
Mus. Paris, 1909, pp. 14-17; Ann. Sci. Nat. (Zool.) 
Paris, sér. 9, t. ix. 1909, pp. 129-155. 
(7) Groupe, E.—Beschreibung neuer oder wenig bekannter 
Anneliden. Arch. f. Naturgeschichte, 1863, p. 52. 
(8) Ivanow, P.—Die Regeneration des vorderen und des 
hinteren Korperendes bei Spirographis spallanzanit Viv. 
Zeitschr, f. wiss, Zool. Bd. xci, pp. 511-558, Taf. 20-22. 
(9) Larrurs, J. Joysux-.—Etude Monographique du Chéto- 
ptére. Arch, Zool. Exp. Gén. sér. 2, t. vii. 1890, 
pp. 245-360, pls. xvi.-xx. 
(10) Lancrernans, P.—Ueber einige canarische Anneliden. 
Nova Acta Leop. Car. Akad. Naturf. Bd. xlii. Nr. 3, 
1881. (For Phyllochetopterus gracilis.) 
(10a) Sars, M.—Fauna littoralis Norvegie, ii. 1856. 
(11) Vaney, C, et Contr, A.— Recherches expérimentales sur la 
régénération chez Spirographis spallanzanti (Viviani). 
C. R. Soc. Biol. 1899, p. 973. 
(12) Watson, A. T.—A Case of Regeneration in Polychet 
ome Proc, Roy, Soc, ser, B, vol. Ixxvii. 1906, 
pp. 332-6, 
