GEOGRAPHICAL DISTRIBUTION, 
The Reef Madreporaria collected were obtained from the Atlantic and Pacific regions, 
which in the case of the Reef Madreporaria generally are characterised, with but one 
doubtful exception, viz., Isophyllia australis, by the distinctness of the forms occurring 
in each. 
ATLANTIC REGION. 
Thirty-seven species of True Corals, representing fourteen genera, and three species of 
Hydrocorals, were collected in this region, and were obtained from the following 
localities :— 
1. Bermuda. 3. St. Vincent (Cape Verde Islands). 
2. St. Thomas (Danish West Indies). 4. Barra Grande (Brazil), 
5. Simon’s Bay (Cape of Good Hope). 
1. Bermupa. 
Since the communication of my note on the Bermuda Reef-Corals,' two additional 
species have come to light, making a total of twenty-three species of True Corals, 
representing nine genera, and two species of Hydrocorals, which were collected at 
Bermuda, thus more than doubling the number formerly known. 
They comprise the following :— , 
Oculina coronalis, n. sp. Isophyllia strigosa, Duch. and Mich. 
» speciosa, Edw. and H. (=ILsophyllia rigida, Verrill). 
»  varicosa, Lesr. 
» pallens, Ehre. 
3 Sragilis, Dana. 
- dipsacea, Dana. 
» diffusa, Lamk. - austrais, Edw. and H. 
»  vermudensis, Duch. and Mich. i cylindrica, Duch. and Mich. 
Madracis decactis, Lyman (= Pentu- 3 knoxi, Duch. and Mich. 
lophora decactis). . marginata, Duch. and Mich. 
1 Narr. Chall. Exp., vol. i. part. i. p. 145. 
(ZOOL. CHALL, EXP.—PART XLVI.—1886.) Zz 2 
