BRYOZOA FROM FRANZ-JOSEF LAND. 83 
There are 16 to 17 tentacles, and one lateral and two distal 
rosette-plates. 
Loc. Spitzbergen, 30-65 fath.; Greenland; Finland, 30-60 fath.; 
Kara Sea, 46-75 fath. (Levinsen); Jan Mayen, 140-180 metres 
(Lorenz); Barents Sea (H.); Novaya Zemlya; Labrador; Baffin’s 
Bay; off Nova Scotia, 51 fath. (Challenger); Murchison Sound, 
45 fath. (Hennig). 
Jackson-Harmsworth Exp.: off glacier between Cape Ger- 
trude and Cape Flora, about 30 fath.; off Northumberland 
Island; “off L. S. H.,” about 15 fath.; near Wilczek Land, 
127 fath. 
41. Porenta acuTrrostRis, Smitt. (PI. 10. figs. 1-5.) 
Porella acutirostris, Smitt, “ Krit. Fort.” 1867, p. 21, pl. xxvi. figs. 106— 
108; Lorenz, Bryozoen von Jan Mayen, p. 90 (8); Hincks, Ann. Mag. 
Nat. Hist. ser. 6, vol. ii. p. 429, pl. xxi. fig. 5. 
Porella major, Hincks, Ann. Mag. Nat. Hist. ser. 5, vol. xiii. p. 51 (25), 
pl. iv. fig. 5. 
_ Specimens from off Northumberland Island, about 15 fath., 
have the surface of the zocecium and of the ovicell granulated. 
The shell when mounted in balsam is very transparent, so that 
the contents of the avicularian chamber can be readily examined, 
and the pair of large avicularian glands are seen to extend across 
a great part of the chamber. This tumid avicularian chamber 
spreads quite across the zoccium and contracts at each side. 
These glands are similar to those of Lepralia margaritifera, Quoy 
& Gaim., and Lepralia foliacea, BH. & S., though somewhat 
larger, and, judging from the shape of the avicularian chamber of 
P. inflata, sp. nov., it also doubtless has large glands. The wall 
of the gland is formed of a layer of nucleated cells, and the 
contents of the glands are a yellowish homogeneous substance 
which does not stain. There are 17 tentacles. 
Loe. Spitzbergen, 16-40 fath. ; Greenland (Sm.); Jan Mayen, 
20-180 metres; St. Lawrence (H.); Cumshewa and Houston- 
Stewart Channel (Queen Charlotte Islands) (Z.). 
Jackson-Harmsworth Exp.: off Northumberland Island, about 
15 fath. 
42, PORELLA INFLATA, nom. nov. (Pl. 10. figs. 6, 7.) 
Porella levis, Smitt, pars (non Flem.), “ Krit. Fort.” 1867, p. 21, 
pl. xxvi. figs. 112-114, and probably 109-119. 
In the Hemeschara stage from “ between Cape Flora and 
6 * 
