43 



especially on the outer side of each IIIBr series, which are 4 (3 + 4) 



(Ph ilipp i ne I slan ds) polycnemis 



e IVBr series 4 (3+4) 



d 1 VBr series 2; VIBr series, when present, 4 (3 + 4) (no rt her n 



AustraliatothePhilippinelslands) alternans 



d 2 VBr and following series 4 (3 + 4) 



e 1 division series narrow and more or less separated (wester n 

 and northern A u s t r a 1 i a t o the Moluccas and 



thePhilippinelslands) briaretis l ) 



e 2 division series closely united laterally, and the interradial 



perisome plated (Philip pin e I slan ds) magnifica 



b 2 40 arms (Aru Islands) roiula 



a 2 Centrodorsal large, hearing numerous long cirri 



b 1 cirri slender, in length between one eighth and one fifth of the arm 

 length; the longest proximal segments are from one third to one half 

 again as long as broad ; 40 arms 



c 1 cirri composed of 19 — 20 segments of which the longest are about 



half again as long as broad (Lesser Sun da Islands) . . . zueberi 

 c 2 cirri more slender, with 20 — 28 (usually 24 — 26) segments of which 

 the longest are about one third agahi as long as broad (southern 



Japan) ..... , inter media 



\y cirri large and robust, their length equal to about one third of the arm 

 length; the longest proximal cirrus segments are about as long as broad; 

 31 — 48 arms 



c 1 division series broad, nearly or quite in lateral apposition, the 

 component ossicles with smooth distal edges ; brachials with the 

 distal edges not noticeably produced; 47 — 48 arms (coast of China) grandicalyx 

 c 2 division series narrow, strongly convex dorsally, the component 

 ossicles with everted and spinous distal edges; brachials with strongly 

 produced and spinous overlapping distal edges; cirrals with more 

 or less overlapping distal ends; 31 — 48 arms (southern Japan 

 from the Korea n Straits to Sa ga mi Bay) imbricata 



1. Comantheria polycnemis (A. H. Clark). 



A. H. CLARK. Proc. U. S. National Museum, vol. $6, 1909, p. 396 {Comanthus polycnemis). 

 Crinoids of the Indian Ocean, 19 12, p. 89. 



Stat. 99. 6°7'.5 N., i20°26'E. 16 — 23 Metres. 1 Ex. 

 This individual has 85 arms 130 mm. long. 



1) Synonyms: Aclinometra divaricala P. H. Carpenter; Comanthus callipeplum II. L. Clark 



