96 



T. GiSLEN. 



Pi... 



/ mm. 



^^'hen one takes into consideration that the length of P2 in iV. 

 multicolor, as stated by Clark, is very variable, I cannot think that the 

 above quoted characteristic can be a genus-separating one. It may 

 be true and applicable to full-grown individuals that the arms are X — XI 

 in Calomeira but XVI — XL in Neometra but this characteristic alone is 

 hardly of genus-separating value. The other distinguishing marks 

 which are given in the diagnosis of the two genera are (with the ex- 

 ception of the one cited below) common to both of them. Calomeira 

 diana seems to be an interesting intermediate link between Gcdometra 

 and Neometra. 



In one characteristic, however, both the genera seem to be 

 separated and for the present I have not brought them together. The 

 R — s are of different formation. In C. ccdlista the interradial processes 

 from R characteristic of Neometra are lacking and I Br-s 1 are there- 

 fore in lateral opposition. Judging from the figure given by Carpexter 

 (Chall. Exp.) the R — s in C. discoidea also seem to have a similar for- 

 mation, though an evident approach to the Neometra type may be tra- 

 ced (cf. A. H. Clark Smiths. Misc. Coll. Vol. 61: 15, p. 42). It is, 

 however, also to be noted that other Calometrid genera (e. g. Pectino- 

 metra) often have an interradial prominence on the R — s. 



