CEPHALOPODA 



609 



S. leucoptera Verr. Butterfly squid (Fig. 956). Length of body 30 

 mm.; fins large, nearly as long as body, transparent, whitish; color bril- 

 liant, upper surface thickly 

 spotted with orange brown; 

 under surface brown and 

 blue : Gulf of Maine, in 100 

 fathoms; rare. 



2. ROSSIA Owen. Likp 

 the above, but the mantle 

 is not united with the 

 head; pen small; both up- 

 per arms hectocotylized : 10 

 species, 3 in North At- 

 lantic. 



Fig. 956 



Stoloteuthis leucop- 

 tera (Verrill). 



Rossia sublevis (Verrill). 



R. hyatti Verrill. Length of body 40 mm.; breadth 17 mm.; length 

 of tentacular arms 40 mm.; length of longest sessile arms 18 mm.; 2 

 rows of suckers towards the base of each arm, 

 distal portion with about 4 rows; color pink- 

 ish, spotted with purplish-brown above: Cape 

 Cod and northwards, in 40 to 150 fathoms; 

 rather common. 



R. sublevis Verr. (Fig. 957). Length 46 

 mm.; breadth 22 mm.; length of tentacular 

 arms 25 mm.; of longest sessile arms 22 mm.; 

 2 rows of suckers on entire arm ; color pinkish, 

 spotted, with purplish-brown above : Cape Cod 

 and northwards, in 40 to 150 fathoms; com- 

 moner than the above. , 



FAMILY 2. LOLIGINIDAE. 



Body elongate; fins terminal; shell (pen) 

 as long as the trunk and pointed; tentacular 

 arms partially retractile, with 4 rows of 

 suckers; other arms with 2 rows; fourth arm 

 on left hectocotylized at tip; siphon attached 

 to head and with a valve; eye with a cornea: 

 about 50 species; littoral. 



LOLIGO Lamarck. Calamaries. Body elon- 

 gate ; fins rhombic in shape, united behind : 31 

 species, cosmopolitan, 3 on the Atlantic coast. 



L. pealei Lesueur (Fig. 958). Common squid. Body a flattened 

 cylinder, pointed at the fin end; fins more than half the length of the 



Fig. 958 

 Loligo pealei (Verrill). 



