KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 51. N:o |l. 53 
Table of the length of spicules in mm. 
Upper part of The branch The trunk 
the anthocodia | bark bark Locality 
0.10—0.16 0.04—0.08 0.03 —0.07 ] The figures indicate 
0.16—0.24 0.109—0.12 0.05—0.08 | The Siberean the limits of variation 
| 029-024 0.10—0.12 0.05—0.07 ( Sea of spicules from various 
| J colonies. 
| 0.18—0.28 0.10—0.14 0.05—0.10 
| 0.14—0.29 0.09—0.11 0:07—0:10 
0.21—0.28 0.09—0.10 - 0.05—0.06 | : 
IP Spitzbergen 
0.20—0.34 0.07—0.14 0.05—0.07 | 
| 0.26—0.30 0.07—0.16 0.05—0.12 = | 
|-0.24—0.33 0.08—0.15 0.07—0.12 | 
| —0.20—0.24 0:07—0.10 0.05—0.08 |) Baffin Bay 
| -0.20—-0.27 I -0.07—0.11 0.04—0.08 J 
| 0.19—0.23 | 0.06—0.09 0.05—0.07 h 
| —0.27—0.344 | —0.09—0.153 0.05—0.12 | Newfoundland 
KÖKENTHAL (1907) gives the following lengths of the spicules: From the upper 
part of anthocodia 0.2—0.35 mm., from the branch bark 0.12 mm. A strongly armed 
specimen, described by MaY in 1900, has the spicules of the branch bark up to 0.25 mm. 
in length. TI have never observed spicules of this length in branch bark within the collec- 
tions I have investigated. 
The differences between the spicules of specimens from the different localities are 
insignificant and allow of no certain conclusions. 
Habitat: 
Newfoundland, Lat. 45” 43' N., Long. 51? 56! W., 90 met., pebbles, shells (Inge- 
gärd and Gladan, !/, 1871), 16 sps; do. Lat. 46” 17' N., Long. 51” 46 W., 106 met., 
stone, shells (Ingegärd and Gladan, !/, 1871), 5 sps. 
N. W. Atlantic, Lat. 52? 5' N.; Long. 52” 19 W., 290 met., sand mixed with clay 
(Ingegärd and Gladan, "/; 1871), 3 sps. 
Baffin Bay, Lat. 75” 20' N., Long. 67” 27! W., 468 met. Hard clay, with stones 
(Sofia exp., ”/, 1883), 1 sp.; Lat. 76” 9' N., Long. 68 28' W., 30—40 met., loose mud 
(E. NILSSON, >/, 1894), 3 sps. 
Greenland, Lat. 73” 30' N., Long. 20? 18' W., 253--27 met., gravel, algae (Greenland 
EXP IS); Lisp. 
Spitzbergen, Lat. 79? 51' N., Long. 17” 5' E., 45 met., stony bottom, 2 sps.; Bell 
Sound, 54—72 met., stone, zoophytes (TORELL), 9 sps.; Recherche Bay, between Rein- 
deer Point and Fox Glacier, 90 met., stones with fine gray-blue clay (Spitzb. exp., /, 
1898), 10 sps.; Ice Fiord, Cape Boheman, 40—50 met. (Spitzb. exp., ?/, 1898), 2 sps.; 
Lat. 80” 10' N., Long. 16? E., Vertegen Hook, June 1861, 1 sp.; Waygat Island, 54 met., 
rock bottom, Aug. 1861, 3 sps.; Foster Island, 72 met., sand bottom, Sept. 1861, 2 sps.; 
