BED SEA AND EGYPTIAN GONIOPOILK. 101 



polyps with green tentacles. I have followed Dr. Klunzinger in including 0. lobata M.-E. & H. 

 in the synonymy. I find the resemblance recorded in my Paris notes. 



For other Goniopores showing this same method of growth, an expanding column 

 consisting of a thickening sheaf of lamelke, see Table III. p. 171. 



As stated above, I believe that the coral figured by Savigny in his Atlas to the Description 

 of Egypt, pi. v. fig. 2, is only an old growth of either this coral or one of the two next. 

 Beautiful as the drawing is, it is obviously inaccurate, for the figures of the enlarged calicles are 

 not at all like those shown on the complete stock. There you see only a few conspicuous 

 septa just as in this coral, and the calicles large with rather thick walls. On the coral 

 which Dr. Klunzinger would identify with that figured by Savigny, see G. Bed Sea 3. 



a. Zool. Dept. 86. 10. 5. 51. 



75. Goniopora Red Sea (6; 2- 

 [" Red Sea " ; Leyden Museum.] 



A Goniopora very similar to the foregoing is in the Leyden Museum and was kindly lent 

 by Dr. Horst for examination. It is also from the Red Sea. It shows the same columnar 

 growth with triangular cross section, the same lamellate wavy septa with inconspicuous synapti- 

 cular walls, and the same friability at the top. But, on the other hand, the calicles are very 

 much smaller (the largest only 3 mm.) and deeper, and the texture of the cross section is much 

 closer. 



This last difference may be solely due to the smaller size of the calicles and hence of the 

 interseptal loculi. 



One other difference made the specimen of special interest : the septal teeth are specially 

 long, like bent spines, not unlike those that represent the septa of Alveopora, while further in 

 the depth of the fossa these spines unite to form an open reticular tangle as is also typical of 

 that genus. On this account I was for long in doubt whether the specimen might not supply 

 us with a clue to the mysterious coral figured in Savigny's Atlas, 'Descr. de l'Egypte,' 

 Zoophytes, pi. 4, fig. 6, which was called Porites clavaria Audouin. 



I am now, however, satisfied, for reasons given in the remarks p. 99, that Savigny's 

 coral is a true Alveopora. 



76. Goniopora Red Sea ( 6)3- 



[? Koseir, deep water on the steep face of the reef ; coll. Klunzinger.] 



Goniopoia savignyi, Klunzinger (? non Dana), Korallenthiere des Rothen Meeres, ii. (1879) p. 45, 

 pi. viii. 24 and v. 23 (juv.) 



Description. — Corallum produces a cluster of short, thick, angular columns with round tops, 

 all swelling as they rise, and all rising from a common stem. The columns are of all sizes and 

 have flattened sides. Their lobate tops fit fairly close together, 1 ' 5-2 cm. apart. The living 

 layer is from 2 ■ 5-3 cm. deep.* 



The calicles variable in size from 2-4 mm., but mostly small, polygonal, often subcircular, 

 about as deep as they are broad, except the lateral calicles which are shallow. Walls thin, with 

 sharp spiny edges, the septa not showing at the edge except on the thicker and more granulated 



* Reckoned from Dr. Klunzinger's photograph, which is given as one-fifth the natural size. 



