422 HI 111 IIN 82, UNITED STATES NATIONAL MUSEUM 



12) segments, <>f which the middle are twice, and the distal, with the exception of the 

 two last, are three times as long as broad. The two following pinnules decrease 

 markedly in length and in the number of their component segments. At least the 

 first of those possesses the stiff and spinelike character of those preceding. The max- 

 imum length of the distal pinnules is 10 mm. The length and form of the proximal 

 Bpiniform pinnules are somewhat subject to individual variation. They are always 

 longer on the outer side of the arms than they are on the inner. The disk is 15 mm. 

 in diameter and is incised. Sacculi are numerous on the disk, arms, and pinnules. 

 The dorsal skeleton is chocolate-brown, with the central region sometimes somewhat 

 lighter; or the arms are grayish black with broad bands of light brown and the central 

 region also light brown; or the color is light brown with very dark cross stripes at the 

 brachial articulations. The disk is dark brown. 



I have examined two of the specimens that served as the basis for Hartlaub's 

 description, one at Leyden and one at Hamburg. 



The specimen at Hamburg has 30 arms 140 mm. long. The centrodorsal is low 

 hemispherical, 6 mm. in basal diameter, with the dorsal pole small and flat, 2.5mm. 

 in diameter; the cirrus sockets are arranged in three closely crowded irregular rows. 

 The cirri resemble those of S. monacantha or S. tuberculata; the longest proximal 

 segments are twice as long as broad or slightly longer, and the segments in the outer 

 t hird or half of the cirri are about as long as broad. 



This is a more robust form than S. tuberculata or S. monacantha, and P 2 , P 3 , and 

 1\ are similar. In the specimen at Hamburg P, is 12 mm. long, slender, with 21 seg- 

 ments. P 2 is 13-16 mm. long, enlarged, stiffened, and spinelike, with 13 or 14 seg- 

 ments. P 3 is 13-16 mm. long, with 12 or 13 segments, and is similar in every way to 

 P 2 . P 4 is 9 mm. long, similar to the preceding pinnules, but proportionately smaller, 

 with 10 segments. P s is 6 mm. long, similar to P 4 but proportionately smaller, with 

 10 segments. The following pinnules are small and weak, 4.5 or 5 mm. in length, 

 gradually increasing in size outwardly. The distal pinnules are 9 mm. long, with 20 

 segments, and very slender. 



The specimen collected by Professor Strubell at Amboina, according to Dr. 

 August Reichensperger, has the cirri XXXII, 22-26, from 22 to 30 mm. long. With 

 the exception of the first and the last the segments are longer than broad, and there 

 are no dorsal spines. There are 29 arms 130 mm. long. P x is slender, somewhat 

 stiffened though filiform, and is composed of 22-25 segments. P 2 to P 6 are stiff, 

 styliform, and sharp-pointed. P 3 consists of 15 segments and reaches 21 mm. in 

 length. The following pinnules measure 16, 11, and 7 mm. in length and are composed 

 of 12, 10, and 9 segments. The structure of the arms, etc., agrees with that given 

 in Hartlaub's description, but the lateral thickenings of the ossicles from the IBr 

 axillary to the last axillary are very pronounced, and they differ from the adjacent 

 parts in their lighter color. The color is chocolate-brown, with the distal portions of 

 the arms abruptly much lighter. 



One of the specimens from the Danish Expedition to the Kei Islands taken at 

 Toeal has 30 arms about 130 mm. long; the cirri have 23-25 segments. The other 

 specimen has 29 arms about 110 mm. long; there are nine IIIBr series, all of them on 

 the outer sides of the postradial series so that the arms are developed in 2,1,1,2 

 order. 



