BRYOZOA FROM FRANZ-JOSEF LAND. 89 
Hennig); Kara Sea (Levinsen); Davis Straits, 100 fath. 
(Hincks); Dogger Bank (Hincks) ; Reykjavik Harbour, 15-20 
fath. (Wallich). 
Jackson-Harmsworth Exp.: Lat. 77° 55’ N., long. 53° 16’ E., 
130 fath. 
Lorenz mentions S. trispinosa, Johunst., from Jan Mayen, 
160-180 metres. 
49, Smirrra Pracutt, Johnston. 
Discopora coccinea, forma Peachi, Smitt, “ Krit. Fort.” pp. 26 & 170, 
pl. xxvi. fig. 164; & fig. 167 (as ventricosa). 
From off Elmwood there are specimens of what may be called 
very typical S. Peachii, Johnst. There are six spines, the sur- 
face is granular, and the mucro is distinct. The determination, 
or rather separation, of S. Peachit, Johnst., 8. ventricosa, Hass., and 
S. variolosa, Johust., is always a great difficulty, although I have 
typical specimens of all three. Hincks says that Lorenz has 
united S. Peachii and S. ventricosa. This does not seem to have 
been done by Lorenz, though it has been indicated by others. 
The genus Mucronella is based upon the presence of a mucro ; 
but various authors place Discopora emucronatu, Sm., with 
S. Peachii, showing the artificiality of the distinction based upon 
the presence of a mucro. 
Loc. Various Arctic localities; Kola, Jan Mayen, Gulf of 
St. Lawrence (Dawson). Abundant on the British, French, 
Danish, and Scandinavian coasts, and is given by Pergens from 
the Mediterranean. Specimens in my collection from Capri are 
the var. octodentata, Hincks. 
Jackson-Harmsworth Exp.: off Elmwood, on basalt and on 
Balanus, 18 fath. 
50. Smirrra vENTRICOSA (Hass.), var, (Pl. 12. fig. 17.) 
Mucronella ventricosa, Hincks, Brit. Mar. Polyzoa, p. 368, pl. 1. figs. 6-8. 
From off the glacier between Cape Flora and Cape Gertrude 
there is a Smittia which I think must be considered as a variety 
of S. ventricosa, Hass. It is growing on Hornera, and the shape 
of the large, finely granulated zoccia is variable, often being 
elongate. The border at the upper part of the aperture is raised, 
sometimes forming a kind of cap, and near the distal border there 
are four spines; whereas in S. Peachii there are usually six and 
in S. ventricosa four or six, but in both cases the spines are 
usually lower down. The mucro is not very wide. There are 
18 tentacles. I must however confess to never feeling sure in 
