DESCETPTION OF SPECIES. 



Order I. STOLONIFERA, Hickson. 

 Family Cornulariid.b. 

 This family is represented in the collection by six species of Sympodium, all 



of which seem to be new : 



Symjiodium indicum, n. sp. 



,, decipiens, n. sp. 



„ incrustans, n. sp. 



,, gramdosum, n. sp. 



,, tenue, n. sp. 



„ pulchricm, n. sp. 



Sympodium indicum, u. sp. Plate II. fig. 6 ; Plate IX. fig. 18. 



This species is represented Iiy one greyish-white specimen which forms a com- 

 plete tube round the broken fragment of a hollow vegetable axis. 



The surface presents a granular appearance, and is thickly covered with large 

 polyps which arise singly, and do not appear to be arranged in any particular 

 manner. 



The polyps consist of a retractile anthocodia and of a non-retractile calyx, the 

 latter marked by eight longitudinal ridges which end slightly below the top. The 

 tentacles have on their aboral surface a spiculated band which projects downwards 

 for a short distance from their base. The calyces are 2-3-5 mm. in length; the 

 whole polyp is about 7 mm. in length ; but this does not represent the maximum, 

 as no polyp is fully expanded. Ova are present in abundance at the base of the 

 polyps. 



The spicules are of two types, (1) prominently rough warty spindles, either 

 straight or curved ; and (2) quadriradiate forms, few in number and marked by an 

 X-shaped marking at the origin of the rays. The following measurements were 

 taken of lenoth bv Itreadth in millimetres : 



1. 0-5xO-08; 0-4X0-0G5; 0-25x0-04. 



2. 0-3x0-2; 0-3x0-13; 0-2 x 0-15. 



Between the vegetable axis and the stolon, polychsete worms ha\'e formed 

 burrows, and some tube-forming worms are attached to the surface. 

 Locality : Andamans ; 265 fathoms. 



