210 
specimens with Cydos^ns-forms of this species that have the same 
size. The septa and costae in each lobe (or fragment) diverge from 
the central septum and especially their marginal part is strongly 
curved. These specimens differ from all other Diaseris-forms by the 
height of those septa with which two neighbouring septa of the 
next higher cycle have fused. This characteristic is also found in 
the Cycloseris-form of F. cyclolites. 
There is much evidence that the description of Diaseris Mortoni 
by Tenison-Woods (1881) was based on specimens closely 
resembling the Diaseris from Amboina. This author already suggested 
that Diaseris Mortoni represents incomplete forms of Fungia cyclolites. 
D o d e r 1 e i n (1902) also regards Diaseris Mortoni as a form of the 
species Fungia cyclolites. The specimens in my material moreover 
agree in every respect with the original description and figures 
of D. Mortoni. 
Fungia actinifovmis Q. & G. 
Fungia actiniformis Doderlein 1902. 
Localities: D. Exp. t. Kei I si.: Doeroa, reef, 4 ex.; off Toeal, ca. 1 m, 
1 ox.; Banda, 10—30 m, 2 ex. 
This species is a very common one in the Kei Islands, though 
but a few specimens were collected. 
Fungia moluccensis van der Horst 1919, 1921. 
(PI. VI, fig. 49, PI. VII, figs. 75, 76 and PI. X, fig. 128). 
Localities: D. Exp. t. Kei I si.: Banda, 0—2 m, 12 ex. 
The two specimens on which van der Horst’s description of 
Fungia moluccensis was based differ in the nature of the lower 
surface. In the case of one of them, the type-specimen, (van der 
Horst 1921, Pi. II, figs. 1, 2) the chief costae rise considerably 
above the others and they are much more densely granulated, 
whereas in the other specimen all costae have nearly the same 
prominence. In my specimens the chief costae are as a rule easily 
to be distinguished at first sight from the other ones, having more 
rows of spines or granulations, but in some of them the costae 
show hardly any difference. In one specimen the costae are only 
