A. W. WATERS—REPORT ON THE BRYOZOA. 235 
branching, but the zocecia in the branches are usually more numerous. The 
basis rami are placed high up as in the British form. This Mediterranean 
form is what I called Crisia elongata var. angustata™, though it does not seem 
that the specimen described and figured was a very characteristic one. It 
seems as though a modification of the position of the branches had taken place 
in the Mediterranean, but whether varietal or specific separation is justified 
ean only be decided by the examination of considerable quantities from 
various localities. In my deseription of C. elongata var. angustata by a 
printer’s error the distance from zocecium to zocecium is given as 0:04 instead 
of 0-4 mm. 
Loe. Plymouth (Harm.), Naples (A. W. W. coll., the form referred to). 
From among the Lamellibranchs which cover the rock at Suez (18), collected 
by Crossland. 
CRISIA CYLINDRICA, Busk. (Plate 25. figs. 14, 15.) 
Crisia cylindrica, Busk, Zool. ‘Chall.’ Exp. vol. xvii. (1886) pt. L. p. 7, pl. 2. figs. 2-4. 
On Canda arachnoides, Lamx., from Gimsah Bay there is a small colony, 
which seems to be C. cylindrica. At the base there is a blind internode and 
the zoarium is at first very narrow ; after the second zocecium branching takes 
place followed by a branch on the other side after the fourth zocecium. 
The zocecia are about 0°28 mm. distant and the zocecial aperture is about 
0:05 mm. The ovicell is shortly pyriform with a tubular oceciostome with the 
opening about 0°05 mm. wide. ‘The pores on the zowcia are very large. 
Busk does not figure the ovicells, though he refers to them ; but in the British 
Museum collection of the ‘Challenger’ specimens I have not found any, 
however in these the zocecia are about 0°35 mm. apart. In the ‘ Challenger’ 
mount a new branch arises from the end of the zocecial tube, as figured in the 
‘Challenger’ Report, pl. ii. fig. 2a, but as it is not alluded to by Busk it 
seems advisable to call attention to the unusual growth, which might possibly 
be passed over as an artist’s mistake. 
Loc. Nightingale Island, 100-150 fath. ( Chall.’) ; Gimsah Bay, collected 
by Hartmeyer. 
Fruisparsa TuBULOSA, Bush. (Plate 25. figs. 16, 17.) 
Hornera violacea, var. 8. tubulosa, Busk, Cat. of Mar. Polyzoa, p. 19, pl. 18. fig. 4 
(1875). 
Filisparsa sp., Manzoni, “ Bry. du- Plioc. de Rhodes,” Mém. Soc. Géol. de France, 3° sér. 
vol. i. (1877) pt. li. p. 69, pl. 3. fig. 18, a & 5. 
Filisparsa tubulosa, Waters, Ann. Mag. Nat. Hist. ser. 5, vol. in, (1879) p. 275; id. 
vol. xx. (1887) p. 257. 
* “Bry, of the Bay of Naples,” Ann. Mag. Nat. Hist. ser. 5, vol. iii. (1879) p. 269, pl. 23. 
fig. 4. 
