100 



BULLETIN 82, UNITED STATES NATIONAL, MUSEUM. 



lateral flattening of the rays is more generally and uniformly developed than in any 

 other familj'; but it is not very marked in Pcecilometra (fig. 229, p. 186), and is 

 even less evident in Strotomctra (figs. 230-232, pp. 188-192). 



184 



FlO. 184.— BE0AD-4RMED VARIETY OF COMiTULA PECTINATA, FROM SPECIMEN FROM SINGAPORE. 



In the Macrophreata the postradial series are usually strongly rounded dorsally 

 and laterally and quite free, without the marginal processes commonly developed 

 in the Oligophreata to a greater or lesser extent when the elements of these series 



