40 SPOLTA ZEYLANICA. 



Station 69. — Clappenberg Bay, lialf a mile west-north-west of 

 Clappenberg Point. 



Depth, 8 fathoms. Bottom, sand. 



Several Holothuria marmorata. One small Clypeastroid. Many- 

 sponges, including Megalcypastas nigra. PhaJcellia donnani, &c. 

 Gonodactylus glabrous. 



Shore collections were made on two occasions, once on the 

 shore of Powder Islands and once near Admiralty House. In both 

 places the conditions are much the same, and the shore consisted 

 mainly of muddy sand, on which were scattered boulders of various 

 sizes. On the whole, the shore fauna was very poor, and contrasted 

 strongly with the rich and varied fauna found in the rock pools on 

 the other side of the Ostenberg peninsula. The latter locaUty is 

 probably one of the best places in the Island for shore collecting. 

 At the two stations in Trincomalee harbour the predominant 

 features were the masses of black sponges encrusting the stones and 

 containing numerous Alpheids and Callianassids, Dromiids, Sipun- 

 cuUds, Ophiuroids, and Polychsete worms. So far as I can determine, 

 the sponge is Megalopastas nigra. This sponge appears to have two 

 predominant forms, the commonest being massive and rounded, and 

 the other being digitate. The Alpheids all proved to be Alpheus 

 audouini and Alpheus his-inoisus. A few specimens of Saron 

 gibherosus were also obtained. Several large Turbellarians were 

 obtained under stones. There was a complete absence of Anemones. 

 Shore crabs and land crabs were also found, as well as Periopthalmus. 

 A few rock oysters were found, and large numbers of a small 

 Gastropod {? Cerithium). 



Explanation of the Charts. 



(Scale of all the Maps is 1 Nautical Mile = 2 Inches.) 



Chart 1.— Map of Trincomalee harbour, giving position of the stations 

 referred to in the present report. 



Chart 2. — Map of Trincomalee harbour, giving depths and bottom 

 deposits. 



Chart 3. — ^Map of Trincomalee harbour, giving the distribution of 

 trepang. 



Chart 4, — Map of Trincomalee harbour, giving the distribution of 

 sponges of all species. 



