94 T. Gtslex, 



with longer cirrals) shows nothing, for, as is well known, all young 

 Crinoids have longer cirrals. As a general opinion one may say that 

 the difference given by Clark 1918 seems to be the only distinguish- 

 ing feature, but that it is probable that the difference is only a func- 

 tion of different geographical and ecological factors. Here, as always, 

 one has, however, also to keep in mind the probability of hybridisa- 

 tion between two separate forms, which would give intermediate forms 

 in the transition territory. Such intermediate forms are, according to 

 Reichenspeeger, found at Ceylon, but whether they are caused by 

 geographical factors or by hybridisation cannot yet be determined. 



Calometridse A. H. Clark. 



Neometra A. H. Clark. 



N. multicolor A. H. Clark. 

 Fig. 75, 76. 



Syn.: Autedon discoidea (part) 190B Mc Clendon Bull. Aiiier. Mus. Vol. 22, 

 pp. 120, 125, 126 according to A. H. Clark. 



Antedon multicolor 1907 A. 11. Clark Proc. V. S. Nat. Mus. Vol. 33, p. 130. 



Antedon tJietis 1907 A. H. Clark Proc. C. S. Nat. Mus. Vol. 33, p. 151. 



Cfdomctra multicolor 1907 A. H. Clark Smiths. Misc. Coll. Vol. 50, p. 363. 



Neometra multicolor 1912 A. H. Clark Crin. Ind. Oc. p. 183; Smiths. Misc. 

 Coll. Vol. 60: 10, p. 29; 1915 Monograph pp. 67, 329, 363; Wash. Journ. Acad. Sci. 

 Vol. 5, p. 214; 1918 Sihoga Exp. Vol. 42 B, p. 133. 



From St. 12 = 2 young specimens. 



Six 1 (St. 12) Cd slightly arched, dorsally flattened, 1,5 mm.. C. XII 

 27 — 30; 11 mm. in a thin whorl. 1^' segment short. 2'' cubical, 3'' a 

 little longer, 4"' and the following ones L=1'2 br. distally shorter. 

 The distal pai'ts of the cirrals from the 5"' segment somewhat collar- 

 shaped and bent outwards. Dttrsal spine single, from aljout the la"' 

 segment. Opposing spine h = ' 2 of the br of the segment. Terminal 

 claw curved, shorter than the penultimate segment. 



R— s h = ^ 4 br, IR prolonged to tips which separate I Br 1 late- 

 rally. 1 Br 1 h = ' 3 br, widely spread out from each other, provided 

 with slight lateral prominences and an inconspicuous medio-dorsal list 



