A. E. Verrill—Marine Fauna off the New England Coast. 228 
Urticina perdix Verrill, sp. nov. 
_Full-grown specimens are very large, often 8 to 12 inches in 
diameter, in expansion. Form very changeable. Column 
varying from low and broad to cylindrical and hour-glass shape, 
often higher than broad; integument soft and smooth, but in 
partial contraction sometimes covered, near the summit, with 
small, ovate verruce. Disk, in expansion, usually broader 
thrives well in aquaria. Several were kept by us all summer. 
fe not appear to extend to- very great depths; 61-115 
athoms, 
