MATTHAI—REGENT COLONIAL ASTR.-EID^ 83 



teristics of the present species but is different from Klunzinger's example of Favia 

 cavernosa. 



Ellis and Solander's type of Madrepora denticulata is missing from the University 

 Museum, Glasgow, but judging from their figure it certainly belongs here. 



In the Paris Museum there are six specimens from the Red Sea which had been 

 originally referred by Milne Edwards and Haime to Favia denticulata ; of these four 

 had later been assigned to Favia savignyi, Ed. and H., one of which (measuring 

 16x10x8 cm.) had been marked by Milne Edwards and Haime as their type of Favia 

 denticulata; a fifth specimen (round, 11x11x8 cm., with distorted corallites) was referred 

 to Favia geoffroyi, Ed. and H., while the last (also round, 9x8x5 cm.) had been 

 erroneously referred by Klunzinger to his species, Favia cavernosa. Favia savigyiyi, 

 Ed. and H., is represented by ten excellent examples (excluding the denticulata specimens 

 above referred to) from Red Sea, one of which is in Lamarck's collection, having obviously 

 been his type of Astrea denticidata (PL 21, fig. 8) ; these show many of the skeletal 

 variations exemplified in my collections. The single specimen (12x8x9 cm.) of Favia 

 amicorum, Ed. and H., from Tongatabou also belongs here, but its corallum is much 

 lighter, with thin perithecal regions, and fewer septa, these differences being doubtless 

 due to conditions of growth. Two specimens (I5x9'5x4 cm. and 9x9x6 cm.) with 

 large corallites from unknown locality on which Milne Edwards and Haime had formed 

 a new species, Favia jacquinoti (PI. 21, fig. 7), are identical with Gardiner's Minikoi 

 example of Prionastrcea magnistellata (fig. 40). These authors had also assigned a 

 specimen each to Favia geoffroyi and Favia deformata, measuring respectively 

 10'5 X 10 x 7 cm. (Red Sea) and 10x10x8 cm. (unknown locality). Favia aspera, Ed. 

 and H., is represented by five specimens from the Red Sea, the largest measuring 

 20 x 20 X 1 2 cm. Identical with the latter specimen are a large example (23 x 23 x 14 cm.) 

 from Seychelles which Milne Edwards and Haime had made the types of Favia rousseaui 

 (PI. 21, fig. 5), and five others referred by them to Prionastrcea halicora. The corallites 

 of their type (18x16x11 cm.) of Favia affinis have almost the same facies as that of the 

 present species but the corallum is lighter (PL 21, fig. 6). 



In the Berlin Museum are five specimens assigned by Klunzinger to Favia ehren- 

 hergi, Klunz. ; two of these, which had been Ehrenberg's originals of Favia versipora 

 { = F. ehrenbergi, var. laticollis, Klunz., fig. 8), resemble one of Forskal's examples of 

 Madrepora favus. Klunzinger erroneously regarded Favia clouei, Ed. and H., as practi- 

 cally identical with his F. ehrenhergi var. sulcata (fig. 8) ; the last specimen (fig. 7) has 

 smaller corallites and fewer septa, its place in the present species being doubtful. The 

 appearance of pali-crowns in Klunzinger's type (8'5x75x3"5 cm.) of Goniastrcea seychel- 

 lensis is due to a ring of upturned septal teeth four or five rows above the columella. 

 Somewhat resembling this specimen is Studer's large " Gazelle " example of Pi'ionastroea 

 seychellensis from New Ireland. Ortmann's example (11 "5 x 8'5 cm.) of Favia ehrenhergi 

 from Dar-es-Salaam also belongs to F. favus. Ehrenberg's type specimen of Astrcea 

 deformis (PL 35, fig. 1) perhaps belongs here, but it has also some resemblance to Favia 

 bertholleti. 



Marenzeller has made an extensive study of Favia savignyi, Ed. and H., to which he 



11—2 



