1906.] ALCYONARIANS FROM ZANZIBAR. 433 



These specimens differ essentially from L. luikeni Wi'ight & 

 Studer in the following pai-ticnlars : — ■ 



(1) There is no distinct " irregular wavy line" on the branches. 



(2) The polyps are distributed all over the ecenenchyma. 



(3) The spicules never exceed 0"19 mm. in length (iia L. liltkeni 

 up to 0'34 mm.). 



(4) The colour of L. lutkeni is a dull yellowish red. 

 From L. crista Mobius they nlso differ in a few details : — 



(1) In L. crista there are numerous sti-iations on the ecenen- 

 chyma especially near the base, but these diminish in number 

 in the younger branches ; in our specimen the striations are 

 very faint. 



(2) The figures of spicules given by Mobius are not quite like 

 those in our specimen, but the variation in the size and form of 

 the spicules in the different parts of the colony which we have 

 noted in detail has led us to disregard the minor differences. 

 It may be that the spicules described and figured by Mobius 

 were taken from the coenenchyma near the base. 



(3) The colour, both of the specimens themselves and of the 

 spicules, shows a marked difference, but this does not justify their 

 separation from L. crista. 



Locality. Cape Yerde Islands. Previously recorded from Algoa 

 Bay. 



LoPHOGORGiA LtiTKENi Wright & Studer. 



This species is represented by a piece of a colony 295 mm. in 

 maximum height and 105 mm. in width. It is branched in one 

 plane, with the branches flattened in the plane of branching and 

 marked by a. distinct groove along both the flattened faces. The 

 polyps are confined to the lateral suifaces of the branches and 

 twigs; their verruc^e are reduced to slight elevations of the 

 general camenchyma. The species is practically identical with 

 the forms which we referred to L. liitJceni Wright &, Studer 

 (Ceylon Pearl-Oyster Fisheries Reports), and shows the same 

 minor divergences from the type. 



Locality. Wasin, British East Africa, 10 fathoms. Previously 

 recorded from Cheval Paar, Gulf of Manaar, 



Order Y. STELECHOTOKEA. 



Section A. Asiplionacea. 



Family Telestid^. 



Telesto rujncola Miiller. 



,, arbor ea Wright &, Studer. 



Family CcELOGORaiiDiE. 



Gcelogorgia palmosa Wriglit & Studer. 

 ,, repens, sp. n. 



