1 1C. ni'TolM S. 



d. Back granular, rough. 



Arm* sub-equal. 

 O. BAIRDII, Verrill. PI. 32, iigs. 37, 38. 



Body short, thick, covered with irregular small tubercles; 

 ocular tubercles one, large, several pointed ; urnis short, sub- 

 equal, webbed one-third of their length ; about (Jf> suckers on the 

 dorsal and GO on the ventral arms. Third right arm hectocot yl- 

 ized one-third of its length, the organ largo, spoon-shaped, 

 somewhat trilobed at the end, deepty concave within, where 

 there are nine or ten elevated transverse folds ; at the base the IT 

 is a fold bent into an acute angle, the apex directed forward, 

 leaving a deep Y-shaped sinus behind it, which is in continuation 

 with a shallow groove formed by a thickening of the web along 

 the side of the arm and terminating midway between it and the 

 fourth arm ; at the end, the arm terminates in a small conical 

 tip, between the two broadly rounded lobes of the spoon-shaped 

 organ; at the base of this organ there is a slight constriction, 

 below which the basal portion bears about 31 suckers. Length 

 of largest specimen (in alcohol), body and head, l-7o in., dorsal 

 arms 2'25 in., web -70 in. ; breadth of body 1"25 in. Color when 

 living, usually pale bluish white, thickly speckled with light 

 orange brown and dark brown. 



Males only taken, 60 to 106 fathoms, by dredge. It is some- 

 what related to 0. Grcenlandicus, but the male of the hitter has 

 the third right arm much longer, with the modified portion rela- 

 tively very much smaller and quite different in form, and with 

 more numerous folds, and the basal part bears 41 to \'.\ suckers ; 

 the other arms also have more numerous suckers; the web is !<>> 

 extensive and the body is more elongated. 



Casco Bay, Maine ; Bay of Fundy. 



Arms 4, 3, 2, 1 . 

 o. IIUGOSUS, Hose. I'l. i'."). lijr. 9. 



Body oval, purse-shaped, large, with a drop ventral groove, 

 not boarded; head short, warty; ocular board <>nr, elongated; 

 arms short, thick, conical; web short. Violet brown, white 

 beneath ; sides of arms netted with brown 1 i 



