PROF. THOMSON AND MR. McQUEEN—REPORT ON THE ALCYONARIANS. 55) 
The autozooids are large and well-marked. Towards the periphery of the 
capitulum they are closely aggregated in rows parallel to the free border, 
the individuals of adjacent rows alternating. Towards the centre of the 
capitulum they become sparser. A converse distribution of the siphonozooids 
is to be noted. 
Towards the centre the siphonozooids are very numerous ; as many as 6 
to 13 can be counted in a straight line between two adjacent autozooids : 
peripherally only 1 to 3. 
The spicules agree with Marenzeller’s figures. 
The following measurements were taken of length and breadth in milli- 
metres :— 
Cortical spicules from the lobes of the capitulum : 
Chaps 0:22 < 0-06 5 071175)< 0025 = 01d x 0-025); 0-13 x 0:04 5 01x 
0-015. 
Rods: 0°35 x 0:025 ; 0:29 x0:025 ; 0:26 x 0:02 ; 0°21x0°025; 0-1ox 
0-015. 
Spindles: 0:27 x 0:03; 0°52 x 0:03 ; 0°22 x 0°04 ; 0°17 x 0:02; 0°15 x 0:02; 
0:075 x 0:02. 
Spicules from the autozooids : 
Rods : 0:28 x 0:02; 0:27 x 0°02 ; 0°26 x 0:02; 0°25x 0-02 ; 0-21 x0-01. 
Cortical spicules from the trunk : 
Tuberculate spindles: 0°8x 0°15; 0°38 x 0:12; 0°78 xX 0°16 ; 0°74 x 0-12 ; 
OOS SO! s O62 054 3 WrSa>cUES 6 OD so0al 5 Olr 0x01 = 
0:44 x 0:06 ; 0°45 x 0:075 ; 0°35 x 0-070. 
Slightly spinose spindles : 0°39 x 0:04 ; 0°34 x 0:04 ; 0°32 x 0:04 ; 0:3 x 
0-06 ; 0:15 x 0-03. 
Clubs: 0°24 x 0:06 ; 0:20:05; 0:18 x 0:05 ; 0°15 x 0:03 ; 0°12 x 0:05 ; 
O-1 x 0°04. 
Smooth spindles: 0:4 x 0°04; 0:275 x 0:03 ; 0:23 x 0°03 ; 0°22 x 0°02 ; 
0:12 x 0:04. 
The colour in spirit is light to medium brown. Mr. Crossland notes that 
the colour of the living colonies was greenish brown, but that the tentacles 
were white in some. Consequently the fully expanded colony, seen from 
above, often appeared white. 
Locality—Suakim Harbour ; growing in proximity to coral, Sherm Shekh. 
Previously recorded from Australia, Red Sea, Tonga Island, Viti Island, 
Maldive Islands. 
ScLEROPHYTUM GARDINERI, Pratt. 
See E. M. Pratt: “The Aleyonaria of the Maldives,” in Gardiner, Fauna and Geography 
of the Maldive and Laccadive Archipelagoes, ii. (1903) p. 527. 
Several specimens belonging to this species illustrate how a colony becomes 
gradually more complex in its structure with increased growth. A young 
colony is represented by an elliptical mass 7:5 em. by 5°5 cm.; from its 
