Ae We WATERS—REPORT ON THE BRYOZOA. 251 
genus Valkeria ultimately stands or not, we cannot have V. wa and Farelle 
atlantica, Busk, in two genera. 
Loc. Northern seas; British, Danish, Belgian, and French coasts 
Mediterranean ; China seas; Agig Suraya (in the south part of the Sudan 
coast), on Lepralia japonica, B. (21); Chuaka, Zanzibar (508), collected by 
Crossland. 
CYLINDR&CIUM DILATATUM (Hincks). 
See Miss Jelly’s list and add :— 
Cylindrecium dilatatum, Calvet, “ Bry. Ectoproct.” pl. 7. figs. 12, 15; Thornely, 
“ Manaar,” p. 128; Record Indian Mus. p. 196; Prouho, Arch. de Zool. Exp. & Gén. 
2nd ser. vol. x. (1892) p. 626, pl. 24. figs. 14-17. 
The zocecial wall has very fine latitudinal lines close together, but they 
cannot always be seen on account of the covering foreign matter. There are 
about 20 tentacles. The creeping stolon is 0:02 mm. in diameter, whereas 
in C. giganteum it is 0:03-0:04 mm. I have a specimen from Naples believed 
to be Cylindrecium with a stout chitinous creeping stolon, and the zooecia are 
long and wide. Busk’s figure of “ Farella gigantea” shows a large creeping 
stolon. 
Prouho has shown that a swelling takes place at the side of the zocecial 
tube near the distal end, and that the ova establish themselves in the cavity 
thus formed and then escape through a tube which develops from the 
swelling. None of the specimens of Cylindrwcium which have come before 
me have been in this stage. 
Loc. Arctic; British; French; Mediterranean; Manaar, 7-10 fath. ; 
Mangalore, Indian Ocean, 26-31 fath. ; Ras el Millan, Sinai Coast, collected 
by Hartmeyer. 
CYLINDR@CIUM GIGANTEUM (Bush). 
For synonyms, see Miss Jelly’s Catalogue and a:d:—Calvet, “ Bry. d Cette,” Tr. Inst. 
Zool. Montpeilier, ser. 2, Mém. 11, p. 91 (1902); Sz#iisman & Travailleur, p. 371 (1907). 
Loe. Queen Charlotte Islands; British; Naples; Cette; Adriatic; Corsica ; 
Ceylon ; Ras el Millan, collected by Hartmeyer. 
ENDOPROCTA. 
BARENTSIA GRACILIS (Sars). 
For synonyms, see Miss Jelly’s Catalogue and add :— 
Ascopodaria gracilis, Kirkpatrick, Ann. Mag. Nat. Hist. ser. 6, vol. ii. (1888) p. 21; 
Norman, “ Polyzoa of Madeira,” Journ. Linn. Soc., Zool. vol. xxx. (1909) p. 277. 
Pedicellina gracilis, Levinsen, Zool. Danica, p. 96, pl. 9. fig. 30 (1894). 
In my Report on the ‘ Belgica’ Antarctic Bryozoa I showed that B. discreta 
has in some stalks of a colony a node and that on this account the genus 
