132 T. GisLÉN, 



Iridometra A TI. ChAUK. 



I. melpomene A. II. Clakk. 



Fig. 117- Mi». 



Syii.: Iridometra melponirnc lUli A. II. Clahk Proc. U. S. Nat. Mu.s. Vol. 

 39, 1). 559; 1912 Crin. Iiul. Oc. p. 230; 1918 Siboga Exp. Vol. 42 B, p. 212. 



From St.. 32 (1), 37 (1) = 2 specimens. 



Sp..l (St. 32) Cd low, bluntly conical. C. XXXII 10—18 (usu- 

 ally 17-18), 9— il mm. (The dorsal (\ with 10 segments, 2 nun). 

 1-' and 2'' segments short, then the L = 2 — 2' /2 br. Tiie segments 

 distally much broader, not hour-glass-shaped. No dorsal spine. Ante- 

 penultimate segment L = 1^/4 br. Penultimate segment L = I's br, with 

 an opposing spine, h = ' 3 of the br of the segment. Terminal claw 

 slightly curved, somewhat shoi'ter than the preceding segment. 



R — s not very visible. I Br 1 h = '/4 br, a little narrower at 

 the middle because of the slightly backwards directed synarthrial 

 tubercle on I Brax. I Br 2 L = br, rhombic, with a long, low carina- 

 tion on the synarthrial tubercle, the distal angle prolonged. Arms X, 

 + 40 mm. Br — s 1 basally united inside; Br. 2 considerably longer than 

 the preceding ossicle, with a proximal border of the same form as in 

 I Br 2, inside widely separated. Ex. of syzygies: 3+4, 9 + 10, 14+15 

 etc. with an interval of about 3 oblique articulations. The distal parts 

 of the arms smooth. 



Pi 14—15; 5,5—6 mm. P., 14-15; 6—6,5 mm, P3 13; 6 mm. 

 All these p-s very slender, the two first segments short, the following- 

 ones L = 3 br. P^ 8 — 11; 4 mm. with a genital gland. Distal p-s 16; 

 6,5 mm. 



Disk without calcareous granules, 4,8 mm. Anal cone 2,7 mm. 

 Colour: arms white with red transverse bands. 



Sp. 2 (St. 37) C. XXXVIII 10—16; 3—8 mm. Arms X, 37 mm. 



Pj 12; 5,5 mm. Pg 11; 5 mm. P3 10, 5 mm. P^ 10, with a ge- 

 nital gland from the 3"^— 6"' segment. Distal p. + 15; 5,5 mm. 



On account of the few segments of Pj and P., and the relatively 

 short Pj the above-described specimens appear to come next to /. mel- 

 pomene, previously found at Hongkong. /. adrestine is a not very dif- 

 ferent species from south Japan. It is distinguished by some more 



