238 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



cirri are about 20 mm. long and composed of 23-25 segments; but the best-developed 

 cirri are all broken off. Long and prominent dorsal spines are developed from the 

 twelfth segment onward. No basal rays are visible. The radials are even with the 

 run of the centrodorsal in the midradial line, and are slightly visible as low triangles 

 in the interradial angles. The IBr t are slightly over three times as broad as long with 

 the lateral edges nearly straight and parallel, united in the proximal half but separated 

 in the distal half by a moderately broad U-shaped gap. The IBr 2 are broadly pen- 

 tagonal and twice as broad as long. The division series are well rounded dorsally and 

 well separated laterally, the sides being perfectly smooth with no trace of lateral 

 production. There are 20 arms 125 mm. long. Ten IIBr 4 (3 +4) series are present. 

 The lower pinnules are very long but are slender and perfectly smooth. 



Two other specimens in the Berlin Museum examined by Muller have 20 arms 

 each, 10 IIBr 4(3+4) series being present in both cases. They resemble the one just 

 described. 



Carpenter's note that IIIBr 2 series may or may not be present was not based upon 

 any specimens seen by Muller, for all the specimens known to Miiller with the exception 

 of the one mentioned by Hartlaub with 13 arms, the one figured by Hartlaub, which 

 has 18 arms, and the type of H. ater, which Muller did not distinguish from H. savignii 

 (see page 3 11) with 14 arms, had exactly 20 arms, and none of them had any IIIBr 

 series at all. The specimens possessing IIIBr series known to Carpenter were those in 

 the British Museum from Kurrachi, which are representatives not of H. savignii but of 

 the quite different H. africana. 



Dujardin, in Dujardin and Hupe, in his account of Comatula savignyi did not 

 follow his usual procedure of simply translating Muller's description but wrote one 

 of his own. He said the expanse is 90 mm. There are 20 branches or tertiary arms 

 carrying numerous pinnules of almost equal length, giving the arms a feathery ap- 

 pearance. The cirri are XXX, 29-30; the last segment is clawed, and the 7 or 9 pre- 

 ceding bear a small spine. The habitat is given as the coasts of Egypt. This de- 

 scription was not drawn up from any specimens but from the original figures published 

 by Savigny in 1817 and reproduced by de Blainville in 1836. While in the heading 

 the species is credited to J. Muller, no reference is given to his descriptions. The 

 only references given are to Savigny's plate, to Audouin's explanation of this plate, 

 and to de Blainville's description and plate of Comatula adeonae. Dujardin's short 

 description accords perfectly with these figures in the size, number of arms, number 

 of cirri, and number of cirrus segments given, while the figures afford no indication of 

 the presence of elongated proximal pinnules, nor of the number of the elements in the 

 division series. The locality given is to be inferred from the inclusion of the species 

 in Savigny's work, and the identity of the species delineated by Savigny was made 

 clear by Muller in 1841 and again in 1849. 



Both the of specimens from the Gulf of Suez in the British Museum are small. 



The two specimens recorded by Chad wick from Suez Bay in 7 meters have 13 

 arms. In both, syzygies occur between brachials 3+4 and 9 + 10 and distally at irregu- 

 lar intervals of 5 to 14 muscular articulations. The color in alcohol is purple with 

 purplish white cirri and almost white pinnules. 



The single specimen recorded from Ul Shubuk by Chad wick had 20 arms, 10 

 IIBr 4(3+4) series being present. The position of the second syzygy varies from 



