KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 59. N:0 |. 15 



par son polypier simple. » In default of materials for comparison, 1 cannot form a di- 

 stinct opinion, but it seems to me that Lithophyllia includes only young, solitary stages 

 of compound corals, viz. Mussa and Isophyllia. 



Trachyphyllia amarantus (Dana 1846), juv. (Figs. 22, 23). 



Manicina amarantum Dana 1846, Zooph., p. 189, plate IX, fig. 1. 



Trachyphyllia amarantus Bedot 1907 (2), p. 173, plates XIII, XIV, figs. 56—62. 



There is one small specimen, 13 mm in height, consisting of one calice only, which 

 I have referred to this species. The calice is oblong (22,4 x 14,3 mm) and rather deep (7,5 

 mm). The costae are lamellated, very marked, and wear spines, generally shorter than the 

 height of the lamina, on which the} T are based. The costae correspond to the septa in 

 number; those of the highest cycle are not so well developed as the others. Septa in 

 four complete cycles and about 20 of a fifth. 24 septa reach the columella; they 

 have each a more or less pronounced notch, forming a paliform lobe. At their lower 

 parts (from the notch dovvn to the columella) the edges of these twenty-four septa are 

 vertical and almost entire. The upper half or two thirds of these septa and the whole of 

 the margins of the others slope more gently and are provided with small, slender spines, 

 increasing in height towards the columella. All septa rather thin; from the marginal 

 spines there are low keels, extending down on the surfaces of the septa. The pseudo- 

 columella of a loose consistency, formed by some rather stout spines from the lowest 

 parts of the twenty-four principal septa. 



The corallum does not seem be part of a colony which has been broken; probably 

 it is a young calice. Not having reached its proper size, it offers some difficulties in 

 identification. In the Swedish State Museum there are some typical adult specimens 

 of T. amarantus (Dana), perfectly corresponding to the existing descriptions and to the 

 excellent photographs by Bedot; the Australian specimen corresponds in every respect 

 with these specimens except in the exteriör form, owing to the young state of the for- 

 mer; moreover the costae of the adult specimens are somewhat higher than those of 

 the young one. 



Favia västa (Klunzinger 1879) Matthai 1914. (Fig. 24). 



Prionastraea, rasta Klunzinger 1879 (21), III, p. 38, plate IV, figs. 8, 12; plate X, figs. 4 a, b. 

 Goniastraea halicora var. acuta Klunzinger 1879 (21), III, p. 33, plate IV, fig. 2; plate X, figs. 3 a, b. 

 Goniastraea quoyi Bedot 1907 (2), p. 207, plate XXVIII, figs. 141—143. 

 Favia rasta Matthai 1914 (23). p. 108. plate XXVII, figs. 3, 5, 6. 



To this species I have referred two specimens, which at first sight seem to be two 

 quite different forms. A careful examination. hoAvever, shows the only marked difference 

 to be the size of the calices. 



One of the two specimens (fig. 24) is a small colony (32,5 x 21 mm) from Cajje 

 Jaubert (48 miles W.S.W., 12.7.11, 140 feet) and agrees well with the description by 



