RED SEA AND EGYPTIAN GONIOPOK^. jqi 



polyps with green tentacles. 1 liave followed Dr. Klunziuger iu including G. lohata M.-E. & H. 

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



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

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



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

 of i:gypt, 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 aU like those shown on the complete stock. There you see only a few consjiicuous 

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

 which Dr. Klunzinger would identify with tliat figured by Savigny, see G. Red Sea 3. 



«■ 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 Eed 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 tlie 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 tlus 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 I'figypte,' 

 Zoophytes, pi. 4, fig. 6, which was called Poritcs davaria Audouin. 



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

 ciiral is a true Ahcopora. 



76. Goniopora Red Sea (6)3. 



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



Goniopora savigmji, Klunzinger (? noii Dana), Korallenthiere des Eothen Meeres, ii. (l.sTi)) p. 45, 

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



Description. — Corallum produces a cluster of short, thielv, 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 subcircuhir, 

 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 granulate(J 



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



