188 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



ends are armed with very numerous fine spines. Another has 19 rather stout arms 

 which broaden considerably from the base to about the sixteenth brachial, where 

 they are about twice as broad as they are at the base. Of the 9 IIBr series, 8 are 

 4 (3 + 4) and 1 is 2. The dorsal surface of the arms and pinnules and the dorsal 

 pole of the centrodorsal are thickly and evenly sprinkled with small white dots, which 

 are larger on the interbrachial lines. The ventral perisoniic surface has similar but 

 larger dots. A third specimen has 20 arms 75 mm. long; the 10 IIBr series are all 

 4 (3 + 4), and are in close lateral apposition. The base of the pinnule on the IIBrj 

 (Pd) is large, making the following syzygial pair appear unusually narrow. A 

 specimen with 18 arms 110 mm. long has 6 IIBr series, 3 of which are 4 (3 + 4), the 

 other 3 being 2. The 2 IIIBr series are both internally developed on the same post- 

 radial series; one of these is 2 and the other is 5 (2 + 3); in the latter the third ossicle 

 is shaped like an axillary, but bears a single ossicle. Following this division series, 

 one of the arms has the first sj^zygy between brachials 4 + 5, while the other has it 

 between brachials 2 + 3. The remaining specimen has 18 arms 115 mm. long; there 

 are 8 IIBr 4 (3 + 4) series. The cirri are of various sizes, only 2 being fully grown. 

 The longest have 24-27 segments and are from 23 to 26 mm. long. 



One of the specimens from station 31 has 22 arms 130 mm. long; there are 10 

 IIBr 4 (3 + 4) series and 2 IIIBr 3 (2 + 3) series, both of the latter interiorly developed 

 on the same ray. The cirri are XIII, with a few additional undeveloped, 22-25, from 

 21 to 23 mm. long. A second specimen has 22 arms 130 mm. long; there are 10 

 IIBr 4 (3 + 4) series and 2 IIIBr 3 (2 + 3) series, both of the latter being internally 

 developed. The cirri are XIII, with some additional undeveloped, 21-24, from 

 15 to 17 mm. long. Another example has 21 arms 130 mm. long; there are 10 IIBr 

 4 (3 + 4) series and a single IIIBr 3 (2 + 3) series, internally developed. The cirri are 

 XVI, 21-25, 20 mm. long. The fourth specimen has 19 arms 100 mm. long; there 

 are 9 IIBr 4 (3 + 4) series, the tenth IIBr series being represented by 2 ossicles, of 

 which the outer bears a pair of pinnules. The cirri are X, 25-27, from 22 to 25 mm. 

 long. 



Of the 4 specimens from station 38, 1 has 22 arms 120 mm. long, 10 IIBr 4 (3 + 4) 

 series being present; there are 2 IIIBr 3 (2 + 3) series, both internally developed. 

 Another has 20 arms 110 mm. long, with 10 IIBr 4 (3 + 4) series. A third has 18 arms 

 95 mm. long; of the 8 IIBr series, 6 are 4 (3+4) and 2 are 2. The fourth has 16 arms 

 120 mm. long; the arms are rather slender, and the brachials are short and slightly 

 wedge-shaped. The cirri are XVII, 24-26, 25 mm. long. There is a single IIIBr 

 3 (2 + 3) series. 



The specimen from station 40 is rather large with 19 arms 125 mm. long. There 

 are 9 IIBr 4 (3 + 4) series present. The arms are unusually stout. They mcrease 

 in width to about the twentieth brachial, where they are twice as broad as at the 

 base, and thence taper distally. The cirri are XVIII, the longest with 29-30 seg- 

 ments and 22 mm. in length. The color is ohve brown, regularly and abundantly 

 speckled with small white spots, excepting only on the cirri. These spots are largest 

 on the perisomic articular lines between the brachials and on the perisome between 

 the pinnule bases. Terminal combs occur, becoming more and more reduced, until 

 near the end of the arms. 



