Dr. F. Briiggemann on Stony Corals. 303 



A. Costal spines directed upwards ; surface of colu- 



mella spoiigious ; six cycles of septa. 



a. Primary and secondary septa thickened 



throughout their whole length, with a 

 narrow cavity within ; costal spines fistu- 

 lar; calice oblong or rectangular; coral 

 very short 1. Sc. cubensis. 



b. Septa of first cycles only thickened towards 



the wall, solid, as are also the costal 

 spines. 



1. Calicle circular, rarely oblong ; the 



larger septal teeth and the costal 



spines rather. obtuse 2. Sc. lacera. 



2. Calicle strongly lobate ; the larger 



septal teeth and the costal spines 



acutely pointed 3. Sc. dubin. 



B. Costal spines directed outwards, or even down- 



wards; columella dense, with subimbricate sur- 

 face, 



a. Five cycles of septa; larger septal and costal 



teeth spiniform, much pointed ........ 4. Sc. vitiensis. 



b. Four cycles of septa ; larger septal and 



costal teeth knob-like, obtuse 5. Sc. lacrymaUs. 



1. Scolymia cubensis. B.M. 



Caryophyllia cubensis, INIilne-Edwards & Haime, Ann. Sc. Nat. (8) 



Zool. xi. p. 238. 

 LithophyUia cubensis, M.-Edw. & Haime, Hist. Nat. Cor. ii. p. 292 ; 



Duch. & Mich. Mem. Accad. Tor. (2) xix. p. 343, pi. v. fig. 10. 



Hab. Cuba ; St. Thomas. 



Pourtal^s describes his Litli. cubensis as having the spines 

 of the younger septa branching, sometimes coalescing and 

 perforated ; he unites doubtfully with it L. argemone and L. 

 cylindrica^ botli of which are stated to have circular calicles. 

 As these characters are more conspicuous in Sc. lacera^ I am 

 led to believe that his specimens may belong to the latter. 



2. Scolymia lacera. B.M. 



Madrepora lacera, Pallas, Elench. Zooph. p. 298 ; Esper, Pflanzenth. i. 



p. 148 (pt.), Madrep. pi. xxv. fig. 2. 

 Caryophyllia lacera, M.-Edw. & H. Ann. Sc. Nat. (3) xi. p. 237. 

 Litliophyllia lacera, M.-Edw. & H. Hist. Nat. Cor. ii. p. 291; Duch. & 



Mich. Mem. Accad. Tor. (2) xix. p. 34.3. 

 LithophyUia argemone, Duch. & Mich. Mem. Accad. Tor. (2) xix. p. 



•344, pi. ix. figs. 11, 12, pi. X. fig. 15. 

 LithophyUia " cubetisis,'^ Pourtales, Cat. Mus. Comp. Zool. iv. p. 70. 



Hab. Curasao (Pallas) ; St. Thomas {Duch. & Mich.) ; 

 Tortugas [Pourtales) ; Bermuda (Pourtales). 



With this species I have identified the LithophyUia arge- 

 mone^ as the description and figures show no difi'erences from 



