17 



series; the colour is nearly black; the other has 14 arms 105 mm. long; there are no IIIBr 

 series; the colour is light brownish gray with a narrow band of very dark brown across every 

 articulation. 



The example from Stat. 93 has 1 i arms 50 mm. long; the single IIBr series is just 

 forming through adolescent autotomy. 



The details of the 10 specimens from Stat. 99 are as follows : (1) 26 arms 95 mm. 

 long; all of the IIBr series are present, and all are 4 (3 + 4); the six IIIBr series, all inter- 

 nally developed, are all 3(2 -j- 3); (2) 20 arms 90 mm. long; all the IIBr series are present, 

 one 2, nine 4(3 +4); (3) 20 arms 70 mm. long; all the IIBr series are present, all 4(3 4- 4); 

 (4) 20 arms 70 mm. long; all the IIBr series are present; (5) 20 arms 80 mm. long; all the 

 IIBr series are present; (6) 12 arms 60 mm. long; the two additional arms are just appearing 

 through adolescent autotomy; (7) 14 arms; (8) 14 arms; (9) 12 arms; (10) 10 arms. 



The largest specimen from Stat. 133 has 15 arms 85 mm. long; one of the IIBr series 

 is 3 (2 + 3)1 the other four being 4 (3 + 4); another has 19 arms 70 mm. long; two of the 

 IIBr series are 2, one of these bearing internally a IIIBr 2 series; a third has 15 arms, there 

 being one IIBr series on each ray; the IIBr series are all 4 (3 + 4); the fourth specimen, 

 which is small, has 1 1 arms. 



One of the examples from Stat. 144 has 18 arms, there being no IIBr series on one 

 ray; the other has 17 arms 95 mm. long, and is evidently young. 



The individuals from Stat. 162 are small; one has 14 arms with all the IIBr series 

 4 (3 4- 4) ; the other has 13 arms with one of the IIBr series 2 and two 4 (3 + 4). 



The individual from Stat. 250 has 14 arms 50 mm. long and cirri XIII, 14 mm. long. 



The details of the eight specimens from Stat. 273 are as follows: (1) 25 arms 50 mm. 

 long; of the five IIIBr series four are on two of the IIBr series, and the fifth is externally 

 developed; the cirri are XVI, 23, 13 mm. to 15 mm. long; the longest cirrus segments are 

 not over one third again as long as broad; (2) 18 arms 65 mm. long; there are no IIIBr 

 series; the brachials are short triangular; (3) 16 arms 60 mm. long; the brachials are short 

 triangular; the cirri are XX, 16 — 18, 10 mm. long; the longest cirrus segments are not more 

 than one third longer than broad; (4) 15 arms 80 mm. long; the brachials are short triangu- 

 lar; the cirri are XXIV, 17 — 21, 13 mm. long; the longest cirrus segments are about one 

 third again as long as broad; (5) 15 arms 65 mm. long; the brachials are short triangular; 

 there is one IIIBr series, 3 (2 -|- 3), internally developed; the cirri are XX, 16 — 19, 10 mm. 

 long; the longest cirrus segments are not more than one third again as long as broad; (6) 

 15 arms 65 mm. long; the brachials are more nearly discoidal than in the preceding ; the cirri 

 are XXII, 19, 12 mm. long; the longest cirrus segments are less than one third again as 

 long as broad; (7) 14 arms 55 mm. long; the brachials are short triangular; the cirri are 

 XXIV, 15 — 16, 10 mm. long; the longest cirrus segments are half again as long as broad; 

 (8) 14 arms, small, undergoing adolescent autotomy; the longest cirrus segments are twice as 

 long as broad; the disk bears about twenty-four large conical calcareous tubercles irregularly 

 scattered over the anal area, and many small calcareous nodules on and at the base of the 

 anal tube. 



SIBOGA-EXPEP1TIE XL1 3 



