Summary
Eighty-six species of bryozoa are listed from collections from reefs in the Sudanese Red Sea, increasing the known fauna list by 30 species. The abundance, in terms of numbers of colonies, and the distribution of nineteen species has been analysed over a range of 30 metres depth. The character of the genera Calyptotheca Harmer and Emballotheca Levinsen are briefly discussed. C. thornelyae is introduced for Lepralia subimmersa Thornely not MacGillivray, and E. harmeri for E. acutirostris Harmer not Canu and Bassler. In addition, three new species of Calyptotheca, C. heteroavicularia, C. nigra and C. sudanensis, and one of Escharoides, E. longirostris, are described.