47- 



48. 



Manchester Memoirs, Voi. xiviii. {igo^), No.%\. ii 



Animal of large size; mantle more than 50cm. long; 

 fin rhomboid attached for the whole length of the 

 mantle Cucioteuthus. 



Animal small not exceeding 8 to 10 cm. in length of 

 mantle 48 



Tentacles absent in the adult; in the young shorter 

 than the arms and with but few suckers on the 

 club ; body stumpy and rounded behind ; suckers 

 extending to the tips of the arms Octopodoteuihis. 



Tentacle longer than the arms and with hooks on the 

 club 49 



/The ventral arms with a series of three spheroidal 

 . Q j knobs at their tips Abraliopsis. 



vTips of ventral arms normal 50 



/'Luminous organs "on the inferior semi-circumference of 

 the eye-ball, covered by the integument and also in 

 the mantle cavity 51 



50-' 



51- 



52-^ 



Luminous organs on the ventral surface of the 

 mantle 53 



Luminous organs not coexisting on the tentacles, eyes 

 and in the mantle cavity 52 



Luminous organs on the tentacles, under the eyes and 

 on the ventral surface of the body 



(Thaumatolampadid^) Thmimatolampas} 



I" Tentacular club armed with suckers only ; fixing 

 apparatus consisting of two suckers and two pads 



Pierygioteuthis. 



Tentacular club with hooks and suckers ; fixing appa- 

 ratus with six or more suckers and ■^■3dd&...Pyroteuthis}^ 



