1906.1 ALOYONABIANS PROM ZANZIBAR. 421 



(h) Thicker double clubs witli 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 there 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 flat plate-like scales which have a 

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

 0"11 mm. 



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



LoBOPHYTUM PACJCIFLORUM Ehreuberg. 



Large brown specimens of this widely distributed species were 

 found at Stations 13 and 16. 



Family 3. Nephthyid^. 

 Subfamily Spongodinje. 



Nephihya Zanzibar ensis, sp. n. 



,, var. mollis, nov. 



,, aronata, sp, n. 

 Spongodes hempiHchii Klunzinger. 

 „ crosslandi, sp. n. 

 „ Zanzibar ensis, sp. n, 

 ,, kiikenthali, sp. n. 

 Stereonephtliya Zanzibar ensis, sp. n. 

 Lithophytum elegans (Klik.) = Ammothea elegans May. 

 viride (Kiik.) = Ammothea viridis May. 

 brassicum (Kiik.) = Ammothea brassica May. 

 „ ramosum (Quoy et Gaimar-d). 



thyrsoides (Kiik.) = Ammothea thyrsoides 

 Ehrenberg. 

 „ thrysoides (Kiik.), var. durum, nov. 



„ Jlavicm (May). 



Paraspongodes striata Thomson & Henderson. 



Subfamily Siphon OGORGiNiE. 



Sip)honogorgia intermedia, sp. n. 



Subfamily Spongodin^. 

 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. 



