BRYOZOA FROM FRANZ-JOSEF LAND. 61 
arctica from d’Orbigny: first the above Reptoflustrina arctica, then 
in manuscript the Semiflustrellaria arctica (= M. spitzbergensis, 
Bidenkap). A specimen from Newfoundland (13705) so named 
in the Musée d’Hist. Naturelle, Paris, has a small, round, widely 
open avicularium like that in MW. flustroides, H. There is also 
the Reptoflustrella arctica, d’Orb., which has a few stout spines, 
a bar to the ovicell, and a triangular avicularium above the ovicell. 
This may be IZ. wnicornis, Flem. 
In a specimen from the Gulf of St. Lawrence sent to me by 
Canon Norman as JZ. Sophie, many of the zocecia, especially the 
younger, are entirely without any trace of spines, and the same 
condition is found in some zoccia in the Franz-Josef Land 
specimen. Hincks has described from the Houston Stewart 
Channel (Queen Charlotte Islands) JZ. Sophie form matura*. 
Loc. Spitzbergen, 10-30 fath.; Greenland, Jan Mayen, Kola, 
Norway, Assistance Bay (Busk); Gulf of St. Lawrence (in my 
coll.) ; Franz-Josef Land, lat. 79° 55’ N., long. 51°0' E. (Ridley) ; 
Norway. 
Jackson-Harmsworth Expedition : off Elmwood # mile, 18 fath.; 
nr. Wilczek Land, 127 fathoms. 
17. MEMBRANIPORA SPINIFERA, Johnst. 
Some small specimens from Giinther Sound are placed under 
M. spinifera, though in some respects they seem to be inter- 
mediate between M. spinifera, Johnst., and I. cymbeformis, 
Hincks. The spines, about 8-10, are more delicate than in my 
specimen of J. cymbeformis from the Gulf of St. Lawrence. 
The lamina to which Mr. Hincks referred does not exist in the 
specimen of cymbeformis in my collection, from Gulf of St, 
Lawrence, as can be easily seen in a piece boiled in caustic potash 
nor is it found in the present form. 
M. spinifera, Joknst., is mentioned from the Barents Sea by 
Vigelius, and from the description this agrees with the specimens 
from Giinther Sound, 10 fathoms. J. cymbeformis has been 
recorded from Jan Mayen (Lorenz); Kara Sea (Levinsen); 
Davis Straits, Labrador, and Gulf of St. Lawrence (Hincks) ; 
Spitzbergen (Bidenkap). 
18. MreMBRANIPORA MACILENTA, Jullien. (PI. 8. fig. 10.) 
Membranipora macilenta, Jullien, Bull. Soc. Géol. France, yol. vii. 
p. 25, pl. xvii. fig. 62, 1882. 
Specimens growing on Mytilus-shell fromnr. Wilczek Land, 
* Ann, & Mag. Nat. Hist. ser. 5, vol. x. p. 9, pl. xx. fig. 2. 
