VEGA-EXPEDITIONENS VETENSKAPLIGA ARBETEN. 433 
Genus 'Tecophora 0. S. 
Tecophora semisuberites O. 5. 
Tecophora semisuberites, O. Seh midt, Atl. Spong., Taf. 6, Fig. 2, pag. 50. 
This species is represented by numerous specimens, varying 
mu ekt in ste tand orm bemeg from 3 to 20mmi mo heient 
They are all well preserved, and a few of them attached to 
stones. The colour is the same as in Swedish specimens; both 
spicules and inner structure of the sponge agree well with the 
description made by O. Schmidt, op. et. The smallest spe- 
cimens have only one mammilla, the largest numerous. 
Habitat. Baffin Bay, Omenak Bay, west- and east-coast of 
Greenland; depth varying from 116 to 410 fathoms. 
Genus Polymastia Bow. 
Polymastia brevis Bow. 
Polymastia brevis, Bowerbank, Mon. Brit. Spong., II, pag. 64, III, Plate 11, 
fig. 1—9. 
Only two specimens represent this interesting species; one 
is” attached to a stone, the other to a small shell. Both spe- 
cimens are broken. The spicules agree perfectly with the 
figures which Bowerbank has given and with those of a 
true Polymastia Bow.; but the shape and the structure of Poly- 
mastia brevis Bow. differ so much from other Polymastie Bow. 
that I should be inclined to transfer this species to another 
genus. I believe that Polymastia brevis Bow. is nearly allied to 
the genus Cornulum Ctr. "The spicules, of course, differ much 
from those of the species of Cornulum Ctr which Carter has 
described. But an outward character may sometimes be of 
more importance than a difference of spicules, especially when 
the shape is so peculiar as that of Polymastia brevis Bow. and 
Cornulum Ctr. 
Artemisina suberitoides Vosmeer, very nearly allied to Sube- 
rites Nardo, has anchorate spicules, which are commonly typi- 
cal for the genera Esperia, Hastatus and other genera nearly 
allied to these. I have not changed the genus-name, because 
I have not seen Bowerbank's type-specimen of the species. 
Habitat. Between Spitzbergen and Nova Zembla, Lat. 70” 
49', Long. 21? 55 depth 150 fathoms (25 N. 5.). 
BALTVA ; 28 j 
