328 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



the seventh, and somewhat longer than broad distally. Most of the segments are 

 about as long as broad. The second-fourth segments bear a high carinate process 

 with the finely spinous crest parallel to the axis of the segment. On the third segment 

 following this crest rapidly decreases in height. PI is 7.5 mm. long, with 24 segments, 

 which at first are much broader than long, becoming about as long as broad on the 

 seventh, and nearly three times as long as broad terminally. The second-fourth seg- 

 ments are carinate, as in P D , though not so strongly. P 2 is 12 mm. long, with 23 seg- 

 ments, much stouter than the pinnules preceding, evenly and gradually tapering to a 

 delicate tip. The first two segments are somewhat more than half again as broad as 

 long; those following gradually increase in length becoming about as long as broad on 

 the fifth and about three tunes as long as broad terminally. The second-fourth seg- 

 ments are rather narrowly carinate, the carinate process being highest on the second, 

 less high on the third, and disappearing at the distal end of the fourth. P 3 is 6.5 mm. 

 long, with 17 segments; it resembles P 2 but is proportionately smaller. P 4 is 5.3 mm. 

 long, with 16 segments, and resembles P 3 . Pg is 5 mm. long, with 16 segments, re- 

 sembling P 4 but less slender terminally and with the carinate processes on the second 

 and third segments much higher. The pinnules following resemble P 8 . 



Another specimen has 18 arms 75 mm. long. A third has 13 arms 115 mm. long, 

 IIBr 4(3+4) series being developed on three postradial series, and the cirri XIX, 

 31-33, 20 mm. long. A fourth has 12 arms 80 mm. long, and the cirri XVI, 25-28, 

 15 mm. long; of the two IIBr series present, one is 4(3+4) and the other is 2. A fifth 

 has 12 arms 75 mm. long, and the cirri XX, 33-34, 20 mm. long; both IIBr series are 

 on the same postradial series, and both are 4(3+4). The sixth specimen has 11 arms 

 65 mm. long; there is a single IIBr 4(3+4) series; the cirri are XV, 26-32, 15 mm. 

 long. The last specimen has 10 arms 90 mm. long, and the cirri XVI, 26 + , 20 mm. 

 long. 



Remarks. This species seems to approach most nearly H. philiberti, but it is a 

 smaller and less rugged form with fewer arms and much more spiny cirri. 



Localities. Bagamoyo (on the mainland of Africa opposite Zanzibar), Tangan- 

 yika Territory [A. H. Clark, 1911, 1912; Hartmeyer, 1916] (5, U.S.N.M., 35218; 

 Berl. M., 6380 [4616]). 



Zanzibar [A. H. Clark, 1911, 1912, 1913] (1, B.M.). 



Waxin, south of Mombasa [A. H. Clark, 1911, 1912, 1913] (1, B.M.). 



Kurrachi, Sind, northwestern India [P. H. Carpenter, 1888; A. H. Clark, 1911, 

 1912, 1913, all as samgnii] (7, B.M.). 



Kurrachi [A. H. Clark, 1912, as savignii] (I, U. S. N. M., 35189 [original No. 14F.]). 



Investigator station 291 ; Straits of Ormuz, entrance to the Persian Gulf (lat. 

 2622' N., long. 5610' E.); 88-89 meters; muddy bottom; November 1, 1901 [A. H. 

 Clark, 1912, as savignii} (7, U.S.N.M., 35180 [original No. ZEV 3095-7], 35761; I.M.). 



Geographical range. From Bagamoyo and Zanzibar to Waxin and from Kur- 

 rachi to the Persian Gulf. 



Bathymetrical range. From the shoreline down to 88 (?89) meters. Most of the 

 records are from specimens collected along the shoreline. 



History. This species was first mentioned in 1888 by P. H. Carpenter who 

 listed it under the name of Antedon savignyi as occurring at Kurrachee (Kurrachi). 



