Manchester Mevioirs, Vol. Ixi. (i(;i6\ No. 



1 1 



near the base. A few faint longitudinal lines occur on the 

 basal stenrjs, but they are never well marked. The specimen is 

 very fragile. 



Notes on the Specimen. — The size, when complete, must 

 have been about 7 cm. high, gem. broad, and i cm. wide. The 

 basal part is bulky and encrusting, and is 10 by 7 mm. in 

 diameter and 12 mm. in height. The basal nodes are from 

 3-5 mm. in height, and about the same in diameter, but they 

 are slightly flattened. The basal internodes are from 3-8 mm., 

 the upper about 8-10 mm. in height; their diameter is about 

 2-3 mm. basally, i mm. apically. When deprived of the 

 coenenchyme, the axis is white, and has traces of spicules. 



The calyces arc sometimes reduced to very minute risings 

 on the surface of the coenenchyme. The polyps, with calyces 

 and anthocodiae, arc sometimes 1.5 mm. in height, and I mm. 



^\ .SJ^ 



7>.t/-A"v'. 3- Spicules from tlie nodes of A/o/'SL-Z/a siiti;;ii!aris, sp. n. 



in diameter. The inter\al between the polyi)s is al)i)ut 2mm. 

 near the base, but on some of th(^ apical branches they are 

 sometimes almost in contact. 



The branching is more or less dichotom.ous, the branches 

 do not run in the straight manner characteristic of such genera 

 as Acanella, but have a slightly twisted or curved course. A 

 striking character is the flattening of the upper branches 

 in a lateral direction, that is, in the reverse plane to that 

 commonly found in Melitodidae. 



The spicules slightly protruding on the surface of the 

 coenenchyme arc seen with a lens as being mass^rd together. 

 The spicules covering the axial part of the nodes are yellow, 

 and the latter a lighter yellow. 



The i)olyps are very well |)rotecte(l by spicules. The an- 

 thocodiae have eight longitudinal areas of fairly long, dark 

 yellow spindles, with simple processes, basally to these areas 

 lies in a circular band of the same type of spicule, with 3 to 4 

 spicules at any one place counting in a vertical direction; 

 beneath this ring the calyx is mainly protected by foliaceous 

 clubs. 



