346 PERCY SLADEN TRUST EXPEDITION. 
2. Stylaster minimus, H. & E. 
Stylaster minimus, Hickson & England, Siboga-Expeditie, Mon. viii. p. 15, pl. ii. figs. 13 & 14, 
Mauritius, A 1, 1-200 fathoms. One specimen. 
This little specimen, 20 mm. in height and 22 mm. in width, resembles the type 
specimen, except in the position of a few of the calices which are exposed on the 
posterior surface. 
3. Stylaster sp.? 
A small “dead” fragment of another species was also obtained off Providence L., 
D7, 75 fms. It is too imperfect to be identified or described. 
Genus ALLOPORA. 
4. Allopora sp.? 
Off Salomon Atoll, Chagos Archipelago, 60-120 fathoms. 
A small white specimen, 24 mm. in height and 7 mm. in diameter at the base, dividing 
dichotomously at the free extremity into two short branches, was obtained from this 
locality. It may represent a new species, but it is too imperfect to describe. 
The occurrence of the genus in this locality is of some interest, as it has not hitherto 
been recorded in the Indian Ocean, although A. nobilis and A. oculina (sp.?) have been 
described from the neighbourhood of the Cape of Good Hope. It is also noteworthy 
that the rich collection of Stylasterina made by the ‘Siboga’ Expedition in the Malay 
Archipelago contained no specimens of the genus. 
Genus DISTICHOPORA. 
5. Distichopora violacea, Pallas *. 
The earliest description of a coral that can clearly be identified with this species is 
given by Pallas, under the name MMillepora violacea. 'The locality for the species given 
by him is “Mare Indicum unde cum Iside ocracea et Gorgonia suberosa promiscue 
allatam habeo.” The Jsis ocracea of Pallas (6) is probably the species now known as 
Melitodes ochracea, and the Gorgonia suberosa is now known as Suberogorgia suberosa. 
Both these species have a wide distribution in the Indian Ocean, the waters of the 
Malay Archipelago and of the Western Pacific islands. It is therefore impossible 
to determine within the boundaries of this wide area where the type specimens came 
from. All that does seem certain is that the type specimens were not West Indian and 
most probably not Hawaiian. 
In a previous paper (2) I have fully discussed the synonymy of this species, and I 
have nothing further to add, except to confirm the view expressed that all the shallow- 
water specimens of Distichopora I have examined from Torres Straits, the Malay 
Archipelago, the coasts of Fiji, and from other islands of the 8. Pacific and of the Indian 
Ocean belong to the one species, Distichopora violacea. I have not yet examined 
* The description of this species is by 8. J. H. alone. 
