261 



but they are believed to be from the Atlantic coast of America. 

 The species is distinguished from others by the great length of 

 the arms, the shortness of the arm-spines, and the general robust- 

 ness of the structure. 



Florida ? 



Museum of Comparative Zoology, Cambridge. 



Ofhiopholis, (Miill. & Trosch.) 



Ophiopholis Garyii^ (Lyman,) sp. nov. 



Description of a Specimen. Diameter of disc, 8 millim. 

 Width of arm, without spines, 1.5 millim. Length of arm, 26.5 

 millim. Mouth-papillce fiat, rounded, scale-like ; 3 or 4 on each 

 side. Teeth about 1], broad, short, stout, flat, square; upper- 

 most and lowest ones narrower than those in the middle ; upper- 

 most one longest, with a rounded cutting edge ; lowest one often 

 split in two. Mouth-shields small, irregular, usually rounded 

 rhomboidal ; length to breadth, .6 : .8. Side mouth-shields large, 

 nearly meeting within, curved ; closely soldered with surrounding 

 parts. Under arm-plates a little separated, squarish, with curved 

 lateral sides ; outer side a little reenteringly curved ; inner side 

 made up of three short lines ; length to breadth, (8th plate,) .7 : .6. 

 Upper arm-plates irregular oval, with outer side most curved ; 

 length to breadth, (3d plate,) .6:1. Supplementary pieces irreg- 

 ular, but usually oblong and angular ; near the base of the arm, 

 usually 8 or 9 to each plate. Near end of arm the upper arm- 

 plates are nearly round, but they still have 8 or 9 supplementary 

 pieces. Disc, above, closely and perfectly covered with small, 

 rounded grains, about 100 to a square millim. ; below, inter- 

 brachial spaces closely, beset with very short, stout, sharp spines, 

 about 1 millim. long. Arm-spines 5, sometimes 6 ; short, stout, 

 blunt, more or less flattened ; three upper ones largest ; 2d spine 

 stoutest and broadest of all ; lowest two smaller and more conical ; 

 lengths to that of under arm-plate, (8th joint,) .5, .5, .5, .4, .3 : .7 ; 

 near tip of arm, spines more rounded and tapering. Tentacle- 

 scale 1, thin, flat, narrowest at the base ; cut off square at the 

 end ; about as long as the lowest arm-spine. Color, in alcohol : 

 above, nearly uniform lake pink, a little deeper near edges of 

 disc ; along arms, a faint, broken line of lighter ; below, inter. 



