A MONOGRAPH OF THE EXISTING CRINOIDS 571 



Of the three specimens from near the Goto Islands in 73 meters the largest may 

 be described as follows: The centrodorsal is a thick disk, with the moderately large 

 bare polar area slightly convex and the cirrus sockets arranged in two and a partial 

 third crowded and irregular, more or less alternating, rows. The cirri are XXXV, 

 31-35 (usually nearer the latter), from 20 to 25 mm. long. The first segment is short, 

 and those following gradually increase in length to the sixth-eleventh or fourth- 

 fourteenth, which are about as long as broad or somewhat longer than broad, and 

 then very gradually decrease, though never becoming much broader than long. 

 Rather prominent dorsal spines are developed from the tenth segment onward. The 

 opposing spine is rather short and blunt. The 39 arms are 65 mm. long. The lateral 

 portions of the dorsal surface of the division series bear a rather broad band of fine 

 granulations which narrows anteriorly, disappearing on the last axillary or first 

 brachial. A much narrower band is found between the IIBr series, and traces of a 

 similar band between the IIIBr series. One of the two smaller specimens possesses 

 two IVBr series, both externaUy developed. 



The specimen from off the Goto Islands in 40 meters is small. 



In one of the two specimens from Dr. Th. Mortensen's Pacific Expedition station 

 14 the cirri are XXXI, 25-39, from 13 to 20 mm. long. Dorsal prominences are 

 developed from the eleventh segment onward. The 39 arms are 60 mm. long. There 

 is a weak median carination on the arm bases. The lateral portions of the IBr and 

 IIBr series have a slight granulation. The distal intersyzygial interval is 9-18 

 muscular articulations. P! is 5.5 mm. long, with 16 segments. P 2 is 9.5 mm. long, 

 with 19 segments. P 3 is 10.5 mm. long, with 16 segments. P 4 is 9.5 mm. long, with 

 16 segments. P 5 is 5.5 mm. long, with 14 segments. P 6 is 3.5 mm. long. The 

 pinnules following become longer again. The disk is 10 mm. in diameter, rather deeply 

 incised, and with coarse granulation. 



In the second specimen from station 14 the cirri have 26-34 segments and are 

 10-15 mm. long. The 36+ (probably 40) arms have the second syzygy at about 

 the fortieth brachial, and the distal intersyzygial interval is 9-12 muscular articula- 

 tions. P : is 6.5 mm. long, with 16 segments. The pinnules following are more or 

 less broken. P 2 is, however, slightly stouter than P 3 and P 4 . 



Gislen said that the cirri in the two specimens last mentioned are slightly more 

 slender than in the specimen from Mortensen's station 12 and provided with smaller 

 dorsal spines. P 3 , P 4 , and P&, which in the specimen from station 12 are larger than 

 PI and PS, are only inconsiderably larger, or are even smaller. Gisl6n remarked that 

 this is evidently due to these pinnules not attaining their full size until the animal is 

 nearly full grown. 



The eight specimens from Sagami Bay and Tokyo Gulf are all similar. They 

 resemble the type specimen from Albatross station 4880 but are very dark, nearly 

 black. 



The specimen without locality is small. It has a single externally developed 

 IVBr series. 



Abnormal specimen. The specimen from the Formosa (Taiwan) Channel is 

 small, though weU developed. It has only four rays, which bear 7, 4, 3, and 6 arms, 

 respectively. As the disk is lacking, orientation and the determination of the missing 

 ray are impossible. The specimen is very imperfect. The longest cirrus stump 



