244 APPENDIX. 



growth of coral-reefs, and subsequently for the formation of 

 islets. As these reefs clearly belong to the fringing class, 

 the Querimba islands have been coloured red. — Monabila 

 (13 32' S.). In the plan of this harbour, the headlands 

 outside are fringed by reefs apparently of coral ; coloured 

 red. — Mozambique (150 S.). The outer part of the island 

 on which the city is built, and the neighbouring islands, are 

 fringed by coral-reefs ; coloured red. From the description 

 given in Owen's Nar. (vol. i. p. 162), the shore from 

 Mozambique to Delagoa Bay appears to be low and sandy ; 

 many of the shoals and islets off this line of coast are of 

 coral-formation ; but from their small size and lowness, it is 

 not possible, from the charts, to know whether they are 

 truly fringed. Hence this portion of coast is left un- 

 coloured, as are likewise those parts more northward, of 

 which no mention has been made in the foregoing pages 

 from the want of information. 



Persian Gulf. — From the charts lately published on a 

 large scale by the East India Company, it appears that 

 several parts, especially the southern shores of this gulf, are 

 fringed by coral-reefs ; but as the water is very shallow, and 

 as there are numerous sandbanks, which are difficult to 

 distinguish on the chart from reefs, I have not coloured the 

 upper part red. Towards the mouth, however, where the 

 water is rather deeper, the islands of Ormuz and Larrack 

 appear so regularly fringed, that I have coloured them red. 

 There are certainly no atolls in the Persian Gulf. The 

 shores of Immaum, and of the promontory forming the 

 southern headland of the Persian Gulf, seem to be without 

 reefs. The whole S.W. part (except one or two small 

 patches) of Arabia Felix, and the shores of Socotra^ appear 

 from the charts and memoir of Capt. Haines (Geograph. 

 Journ.) 1839, P- I2 5) t0 be without any reefs. I believe 



