KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 51. N:o |l. 43 
Sympodium catenatum FORBES 1847. 
Diagnosis: In the bark of coenenchym the rods and crosses are most numerous, 
mixed with irregular calcareous bodies, closely packed. Spicules of anthocodia mostly 
rods. 
1847 Sarcodictyon catenata, S. agglomerata FORBES. 
1856 Rizoxenia filiformis M. SARS. 
1892 Clavularia catenata HicKson. 
Beyond what is mentioned on p. 32 I will add that it seems me that HERDMAN”S 
view (1894) as to the position of this species in relation to Alcyonium is correct. The 
attempt of BrRocH (1912) to identify this species with Clavularia stormi is incorrect. The 
differences in shape of the spicules of S. catenatum and C. stormi proves it. 
General Distribution. 
West coast of Norway (M. SARS, 1856), Herlö Fiord (APPELLÖF, 1895), west coast 
of England, Scotland, 18—72 met. (HERDMAN 1883, 1894), west coast of Ireland, 720— 
762 met. (STEPHENS, 1909). 
Anthomastus VERRILL, 1878. 
Diagnosis: The colonies are of mushroom shape. The upper surface of the colony 
flat or arched, completely or partially, irregularly divided. Dimorphismus exists. Auto- 
zooids few, large, and retractile. Siphonozooids numerous, with gonads. Spicules are 
spindles, clubs, rods, rollers with girdles (dumb-bells), crosses. 
1910 a, Anthomastus KÖKENTHAL. 
Synopsis. 
ÅA) Polyp-bearing part arched, complete. A. purpureus (Kor. and DaAn.), 1883. 
B) Polyp-bearing part flattened, irregularly divided. ÅA. agaricus STUDER, 1891. 
Anthomastus purpureus IKorREN and DANIELSEN, 1883. 
Diagonosis: The colony is sponge-shaped, with a shaft and a broad and polyp- 
bearing arched disc. Large autozooids 12 mm. in length, arranged in three irregular 
groups... (Pl. II fig: 27.) 
1912 a, Anthomastus purpureus BROCH. 
The colony is from 1.5 to 5 cm. in height, with a shaft which at the base extends mem- 
branously, and an arched polyp-bearing part. The polyps are of two kinds, partly large 
and few in number, occurring only on the upper part of the colony, i. e., the so-called au- 
tozooids, and partly small and numerous, situated also on the sides of the colony, si- 
