NO . 1526. CORALS FR OM FRENCH SOMALILAND— VA UGHAN. 257 



Genus GONIASTREA Milne Edwards and Haime. 



GONIASTREA PECTINATA ( Ehrenberg). 



1834. Adrea pectlnata Khrexbekg, Coralleiith. Rotli. Meer., p. 9(i. 



1879. Gonlastriea pertinatd Klunzix(;er, Korallth. Roth. Meer., Pt. .S, p. o4, pi. 



IV, fig. 6. 

 1904. (hmiastriva pecthinta (takdinek, [Nlailrepor., ]\Ial(li\e and J^arcadive Arclii- 



pel., II, !>. 773. 



Five specimens of this specie.s were obtained. The calices, wall, 

 septa, pali, and columella have been sutficiently described by Klun- 

 zinger and Gardiner, but the corallum has received only scant atten- 

 tion; therefore, 1 furnish the following notes. 



The corallum forms subcylindrical masses with liattish uppei' sur- 

 faces, or is composed of larue, truncate, ascending- lobes. 



The smallest specimen is a short,, compressed column, somewhat 

 swollen near its upper end, with a flattened upper surface. Greater 

 diameter of base, !> cm.; lesser, 7 cm.; height, 7.5 cm. 



A second specimen: Greater diameter of base, 8 cm.; lesser, about 

 7 cm.; height, 11.6 cm. This specimen increases considerably^ in 

 diameter with upwai'd growth, having a diameter of 10.8 cm. just 

 below its upper end. 



Another specimen is 13 cm. tall; diameter of base about 10 cm. In 

 form, it is a somewhat compressed column, with a truncate upper end. 

 The next larger specimen is composed of several truncate lobes. It 

 has a greater basal diameter of 1.5 cm.; lesser, 6 cm.; height, 13 or 11 

 cm. Between the lobes the corallum is dead. 



The largest specimen is composed of two large lobes, each of which 

 is secondarily lobate, with flattened upper surfaces. Greater diameter 

 of the base, 21 cm.; lesser, 10.5 (the outline of the base is dumb-bell 

 shaped); height, 18 cm. 



Klunzinger says, "'Ehrenberg's only specimen is convex, 6-8 cm. 

 long and tall." Gardiner gives no information on the growth form of 

 his specimens. 



GONIASTREA RETIFORMIS (Lamarck). 



1816. Astrea retifunaii^ Lamarck, Hit^t. nat. Anini. sans Vert., II, p. 265. 



1879. Goniastrxa Tetijornns Klunzinger, Korallth. Roth. Meer., Pt. 3, j). 36, 



pi. iv, fig. 5. 

 1904. Goniasirnu rcti/ormis Gardinek, Madre])or., Maldive and Lacradive 

 Archipel., II, p. 772. 

 One specimen, which requires no special notice, was obtained. 

 Proc. N. M. vol. xxxii — 07 17 



