36 



Station 267; 7 02' 30" N., 79 36' E. ; 457-589 fathoms. Station 334; 

 6 57' N., 79 33' E. ; 568 fathoms. Station 2 ; 6 32' N., 79 37' E. ; 675 fathoms. 

 Previously recorded from Reefs, Fiji. 



Stenella horrida, 11. sp. Plate V. fig. 13 ; Plate IX. fig. 3. 



Two specimens of a beautiful colony. The larger, which lacks its base, is 

 53 mm. in height, with a maximum width of 38 mm. 



The base of the smaller piece is a flat expansion, from which the stem rises. 

 The stem is dark brown in colour, horny in texture, with a poor development of 

 calcareous corpuscles. It has a diameter of 1 '3 mm. at its lower end, and becomes 

 lighter in colour and filiform towards the cuds of the branches arid twigs. 



The branching is nearly in one plane, and is somewhat profuse. The polyps, 

 which are arranged in an irregular close spiral all round the axis, vary in height 

 from l'5-2 mm., and have a basal diameter of 1'2 mm. The oral end is sur- 

 mounted by 6-8 projecting spines. 



The thin coenenchyma shows flat scale-like spicules, and it does not allow the 

 axis to shine through. 



The polyp spicules are (1) flat scales; (2) spindles straight or curved; (3) 

 spindles sharply bent at an angle ; and (4) flat irregular spicules with one or two 

 projecting spines. The following measurements were taken of length and breadth 

 in millimetres : 



(1.) lxO'6; 0-9x0-6; 0'6x0'28; 0'5x0'3; 0'5x0'2. 



(2.) 0-5x0-04; 0'36x0'04; 0'32x0'04. 



(3.) 0-8x0-13; O'SxO'l; 0'6x0'05; 0'6x0'04. 



(4.) 1-5x0-4; 1-3x0-45; I'2x0'5; 0'9x0'6; 0'85x0'4; 0'8x0'6. 



Locality: Andaman Sea ; 112 fathoms. 



