No.i52fi. CORALS FROM FRENCH SOMALILAND—VAUGHAN. 255 



but about 0.5 mm. is an average. Diameter of calices from 1.5 to 

 2 mm.; distance apart, from 1 to 2.5 mm., usually equaling or slightly 

 exceeding the diameter. 



The septa usually form three complete cycles; primaries and sec- 

 ondaries of the same size, extending to and fusing by their inner ends 

 with the columella; the tertiaries are short and thin. 



A comparison of the two descriptions shows that the only real 

 difference is the form. Since in all other characters they are identical, 

 or as each specimen shows within itself sufficient variation to overlap 

 with the other, I think that difference is not of specific value. 



Klunzinger '^' places '^ Solenastrsea forskaJanciM.. Edw. and H.'" in 

 the s^monj-my of Madrepora serailia Forskal, employing the name 

 Cypliastrxa sermlia. Doctor Gravier's specimen agrees perfectly with 

 the description of Milne Edwards and Haime, and differs in no 

 important particular from the specimens described by Gardiner from 

 Hulule, but I do not feel at all sure that it is the same as Klunzinger's 

 CypJioMra'a sera Ilia. It is to be regretted that Doctor von Maren- 

 zeller has not given us some notes on Forskal's type and additional 

 information on the material studied by Klunzinger. 



Genus APHRASTREA Milne Edwards and Haime. 

 APHRASTREA DEFORMIS (Lamarck). 



1S16. J.s/7-ca f/f/brm/.s Lamarck, Hist. nat. Anim. sans Vert., II, p. 2H4. 



1848. Aphrastrea deformis Milne Edwards and Haime, Aim. .Sci. nat., 3 sen, 

 Zool., X, pi. IX, tigs. 11, llff. 



1849. Aphrastrea deformis Milxe Edwards and Haime, Ann. Sci. nat., 3 ser., 

 Zool., XII, p. 165. 



1904. Ajjhrastriea deformis G.KRDiysER, Madrepor., Maldive and Laccadive Archi- 

 pel., II, p. 773, pi. Lxiii, tig. 31. 



A single excellent specimen that shows no noteworthy peculiarity 

 was obtained. 



Genus ECHINOPORA Lamarck. 

 ECHINOPORA EHRENBERGII Milne Edwards and Haime. 



1849. Echinopora ehrenbergi Milne Edwards and Haime, Ann. Sci. nat., 3 ser., 



Zool., XII, p. 187. 

 1879. Echinopora ehrenbergi Kliinzini;er, Korallth. Roth. ^leer., Pt. 3, p. 56, 



pi. VI, tigs. 7, 9; pi. X, fig. 15. 



A small, young specimen of Eeldnopora., attached to the ba.se of a 

 specimen of OrMcella hott^y was collected at Djibouti. As the speci- 

 men is immature, its identification is not entirely positive. l)ut it seems 

 to be E. ehrenhergl. 



« Korallth. Roth. Meer., Pt. 3, p. 52, pi. v, tig. 4; pi. x, figs. 12a, 126. 



