1909.] MARIJv'E FAUXA FROM KERtMBA ARCHIPELAGO. 915 



Family Astr.eid.e Dana. 

 Genus Trachyphyllia Milne-Edwards &, Haime. 



Trachyphyllia amarantum Milne-Edwards & Haime [22]. 



There are twelve young solitary specimens having calices from 

 17x13 to 46 X 26 mm., coralla from 10 to 38 mm. in height. 



There are also seven older specimens undergoing fissiparity into 

 two or four parts. These have calices of 80 x 48 mm., and the 

 coralla are 58 mm. in height. 



Localities. — Station I. Tunglii Bay. Bottom : sand, mud, and 

 shell. Depth: 5-18 fathoms. 1 adult specimen. — Station III, 

 Mtundo Bay. Bottom: sand, shell, and coral. Depth: 6 fathoms. 

 5 young specimens. — -Station VI. Kero-Xyuni. Bottom : sand. 

 Depth : 5-10 fathoms. 4 young specimens. — Station XI. Man- 

 angoroshi Point. Reefs. 2 young specimens. — Station XIII. 

 Pemba Bay. Bottom: muddy. Depth: 10-20 fathoms. 1 very 

 young specimen. Locality of the remaining 6 dead adult 

 specimens is unrecorded. 



Genus Mussa Oken, Milne- Edwards & Haime. 



MussA CRiSTATA Milne-Edwards [22]. 



The collection contains only a small dead colony, consisting of 

 one isolated and five united calices. The whole colony measures 

 about 120 x 90 mm. and rises to a height of 80 mm. The separated 

 calice measures 45 x 35 mm. 



This species apparently differs from J/, distans of Klunzinger 

 [17] only in possessing an incomplete fifth cycle of septa, a 

 character which seems insufticient for the establishment of a new 

 species. 



Locality unrecorded. 



Genus Favia Oken, Milne-Edwards &, Haime. 



Favia okeni Milne-Edwards &:■ Haime [22]. 



Parastrea radiata Milne-Edwards & Haime. 



The collection contains a single almost circular colony of nine 

 distinct calices, measuring 25 mm. in diameter and lising to a 

 height of 17 mm. Klunzinger (17, t. iii. fig. 4) gives a photo- 

 graph of this species under the name of F. cavernosa Forskal. 



I^ocality unrecorded. 



Genus Gyrosmilia Milne-Edwards & Haime. 

 Gyrosmilia interrupta Milne-Edwards k, Haime [22]. 



There is a circular and smoothly convex colony of this species, 

 measuring 90 mm. in diameter, and reaching a height of 60 mm. 

 at the centre of the colony. The under surface is covered by a 



Proc Zool. Soc— 1909, Xo. LXII. 62 



