1906.] ALCYONARIANS PROM ZANZIBAR. 421 



(b) Thicker double clnbs with whorls of rough wart-like tubercles, 



from 0'15-0"3 mm. in length and from 0'035-0"08 mm. in 

 width. In some thei-e is so little waist that the appearance 

 is almost .spindle-shaped. 



(c) Thicker and blunter rod-shaped spicules with large and very 



rough wart-like tubercles, length and breadth in millims. : — 

 0-22 X 0-1; 0-3 X 0-15; 0-2 x 0-16. 

 Of the last set (c) some are almost globular in form, owing to 

 the strong development of the wart-like tubercles. Among them 

 there are also a few six-sided fiat plate-like scales which have a 

 maximum length of 0'14 mm. and a maximum breadth of 

 O'll mm. 



LoGcdity. Kiungani, near Zanzibar, and wherever coral abounds. 



LoBOPHYTUM PAuciFLORUM Ehrenberg. 



Large brown specimens of this widely distributed species were 

 found at Stations 13 and 16. 



Family 3. NEPHTHTiDiE. 

 Subfamily Spongodin^. 



Nephihya Zanzibar ensis, sp. n. 



,, ,, var. mollis, nov. 



„ armata, sp. n. 

 Spo7igodes he7nprichii Klunzinger. 



,, crosslandi, sp. n. 



,, Zanzibar ens is, sp. n. 



,, kukenthali, sp. n. 



Stereonephthya Zanzibar ensis, sp. n. 

 Lithophytum elegans (Klik.) = Atnmothea elegans May. 



,, viride (Kiik.) = Ammothea viridis May. 



,, brassicum (Kiik.) = Ammothea brassica May. 



„ ramosum (Quoy et Gaimard). 



,, thy7^soides (Kiik.) = Ammothea thyrsoides 



Ehrenberg. 



,, thrysoides (Kiik.), var. durimi, nov. 



,, flavxmn (May). 



Paraspongodes striata Thomson & Henderson. 



Subfamily Siphonogorgin^. 



Siphonogorgia intermedia, sp. n. 



Subfamily Spongodin.s;. 

 Nephthya zanzibarensis, sp. n. (Plate XXVII. fig. 3.) 

 Two yellowish-white colonies, one attached to a monocotyle- 

 donous twig, the other to a leaf. They are respectively in height 

 and breadth, 4 by 3, and 5"5 by 4 centims. The whole colony 

 in its preserved state is flaccid, but is densely covered by a layer 

 of small white spindles with numerous larger ones distributed 

 irregularly over them. 



28* 



