Occasional Papers of the Museum of Zoology 19 



eastern states, having been recorded from Louisiana, North 

 CaroHna, Georgia and Florida, while moiioiiiclaena has an 

 equally restricted range in the north, having been recorded 

 only from New York, New Jersey, Ontario, Ohio, Indiana 

 and Wisconsin. In the same way that rnonomelaena has been 

 derived from fasciata, martlia has been derived from ornata. 

 Martlia is entirely eastern and is known from Maryland on 

 the south through Pennsylvania, New Jersey, New York and 

 ^lassachusetts to Maine. Oriiafa also is eastern and occurs 

 only in North Carolina, Georgia and Florida. 



This leaves one northern species, elisa^ unaccounted for. 

 In its range it almost rivals eponina, having been recorded for 

 the following states : Georgia, South Carolina, North Caro- 

 lina, Virginia, New Jersey, Pennsylvania, New York, Massa- 

 chusetts, Maine, Ontario, Michigan, Ohio, Indiana, Illinois and 

 Wisconsin. I can make only a guess as to its relationships. 

 It seems to me it may have been derived from cpo)iina at about 

 the same time as iiiartha was derived from ornaia, and mono- 

 inelacna from fasciata, and that the wide extension of eponina 

 took place at a later date. The wide range of clisa shows that 

 it shares with eponina, from which I think it has been derived, 

 a high degree of adaptability. 



Two southern species of limited range remain to be dis- 

 cussed. Bertha is known only from Florida. With little evi- 

 dence to support the opinion, I believe it has been derived from 

 ornata. The remaining species, amanda, is known from North 

 Carolina, Georgia and Florida. I cannot detect any close rela- 

 tionship with any other species except that it is a very distinct 

 member of the ornd^ta group. 



