MATTHAI— RECENT COLONIAL ASTR^ID^ 87 



horradailei but calices slightly smaller and walls thinner. Similar to this example but 

 with somewhat larger calices are two small specimens (from unknown locality) in the same 

 collection, having the facies of Gardiner's example of Astrcea okeni from Rotuma ; they 

 were undoubtedly Lamarck's types of Astrea ananas var. stellis ampliorihus ; on these 

 Milne Edwards and Haime have founded their species Favia amjMor. A large specimen 

 (70 X 60 X 35 cm.) from Seychelles in Rousseau's collection named Prionastrcea quoyi is 

 identical with my types of i^. doreyensis. 



In the Berlin Museum are two specimens from Ceylon named Goniastrcea serrata, 

 Ortm., the larger measuring 23x18x17 cm., presumably Ortmann's type; the second 

 specimen much smaller and not properly cleaned. These do not belong to Goniastrea 

 but comes near my examples of Favia doreyensis, their main difference consisting in the 

 absence of paliform lobes. 



In the Challenger collection is a small specimen from Fiji, which Quelch has referred 

 to Astrcea dance (Ed. and H.), in every respect identical with my types of Favia dorey- 

 ensis. A broken off" fragment from Mactan Island, Philippines, which the same author 

 has assigned to Astrcea ordinata, Verrill, resembles Gardiner's example of Astrcea okeni 

 (Ed. and H.). 



Localities. Maldives: Hulule (9); Goidu (6). Minikoi (11). Seychelles (3). 

 Coetivy (l). Chagos : Salomon (4) ; Coin, Peros (1); Rotuma (l). Also from American 

 Seas (Lamarck), Port Dorey (Milne Edwards and Haime), Ceylon (Ortmann), Fiji and 

 Mactan Island, Philippines (Quelch). Not recorded from the Red Sea. 



3. Favia hululensis, Gardiner. (PL 9, %. 6 ; 22, fig. 6 ; 35, fig. 1.) 



1834. Favia rotulosa, Ehrenberg, Corall. roth. Meer., p. 95 (non Madrepora rotulosa, Ellis and Solander, or 



Astrea rotulosa,' Lamarck). ' 



1899. Astrcea fragilis, Gardiner, Proc. Zool. Soc. London, p. 748. 

 1904. Favia hululensis, Gardiner, Fauna Geogr. Maldives and Laccadives, p. 769, pi. 41, figs. 19 — 21. 



Corallum. Massive, rounded, sometimes incrusting. Peritheca vesicular as in 

 previous species. Corallites circular or oval, projecting from "5 — 1 mm., closer together 

 than in F. doreyensis. Walls thin. Calices somewhat smaller than in previous species, 

 with average diameters 7 x 5"5 mm. and of equal width from calicular margins to bases, 

 depth 3 — 6 mm. 



Septa thin, vertical, with toothed edges, rough sides, 20 — 30 in number, average 

 22 — 25. 8 — 12 septa meeting columella, usually 9 or 10, each with its upper half or 

 two-thirds narrower, as a rule without paliform lobes (sometimes the lowest septal tooth 

 tending to be paliform), exsert to about 1 mm., exsert ends arched, entire or serrate. 

 Costse usually thin, those of neighbouring corallites either meeting in notches or alter- 

 nating. Columella rudimentary. 



Multiplication by sub-equal or unequal fission. 



Towards edge of specimens the corallites project obliquely as in F. doreyensis, up 

 to 2 mm., and are further apart, up to 4 mm. Gardiner's specimen no. 4 (p. 770, fig. 21) 

 is peculiar in that, crowded between the exsert septal ends of each corallite, are about 

 20 similar ridges without traces of septa. 



In general appearance this species is like a smaller edition of Favia doreyensis. 



