152 ECHINODERMA OF THE INDIAN MUSEUM, PART VII. 



Dirhrometra hiinanilata 1909. A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 

 p. 13. 

 Habitat. — Amboina. 



DICHROMETRA ARTICULATA. 



Cottiatuhi (Ah-cio) (trtindata 1S49. J. MtJLLER, Abhandl. d. k. preuss. Akad. d. 



Wiss., 1847, p. 263. 

 Cnmatiilii- po]ya<i/i/ls (part) 1862. Dujardin and Hupi^., Hist. nat. des zoophytes. 



Echinodermes, p. 208 {vomen nudum). 

 Dichrometra articulaia 1909. A. H. Clark, Proc. Biol. 8oc. Washington, vol. 22, 



p. 13. 



Habitat.— Moluccas ; Port Molle. Queensland. 



Depth. — Littoral, and down to 20 fathoms. 



Remarks — The cirri of the type, which is in the Paris Museum, are XVII. 

 32, 33, 34, 36, 34 mm. long; dorsal spines are developed from the eleventh or 

 thirteenth segment onward; these are rather short, though pro7iiinent; the 

 longest cirrus segments are about one third longer than broad. 



Tliere are thirty-eight arms 105 mm. long, two I IIBr series being missing; 

 the division series resemble those of Selevemetra finschii, and ai"e in close lateral 

 contact by their rather broadly extended lateral edges. The radials are barely 

 visible. 



The proximal jjinnules are remarkable for their great length, tliough tliey 

 are very slender and Hagellate, like P, in Po7i.tiom.etra andersoiii. 



Pi is very delicate, but long, and flagellate distally ; P.^ is half again as long 

 as P| and proportionately stouter basally ; it is nearly as long as P.^ ; Pg is the 

 longest pinnule on the arm, 21 mm. long, but not greatly longer than P.^; it has 

 twenty-six segments, which become squarisli on the third and then gradually 

 elongate, being nearly or quite twice as long as broad distally. P^ is about as 

 long as P|, or slightly longer, and about as stout basally; P^ is not much more 

 than one half as long as P.^, and is much weaker : P^ is smaller than P, : the 

 following pinnules are like P^, and are very short. 



DICHROMETRA sp. 

 Dichrom.etra sp. 1911. A. H. Clark, Proc. U. S. Nat. Mus., vol. 40, p. 27. 

 Habitat. — Madagascar ; Zanzibar. 

 Depth. — Littoral, and down to 30 meters. 



DICHROMETRA sp. 



Dichrometra sp. 1911. A. H. Clark, Proc. U. S. Nat. Mus., vol. 40, p. 27. 

 Habitat. — Zanzibar. 



