A. E. Verrill — North American C&phalopods. 



263 



Young Architeiithis Harveyi. 3Ieasurements of arms (in inches). 



Dorsal pair. 

 Breadth of front, excluding membranes, . 



Breadth of lateral membranes, 



Diameter, transversely, 



Diameter from front to back, _. 



Second i^air. 



Total length, 



Breadth of front, 



Breadth or membranes, 



Diameter, transversely, .. 



Diameter, front to back, 



Third pair. 



Breadth of front, 



Breadth of membranes, ._ -.. 



Diameter, transversely, 



Diameter, front to back, 



Fourth p)air. 



Breadth of front, 



Breadth of membranes, 



Diameter, transversely, 



Diameter, front to back, 



Tentacular-arms. 



Total length, 



Base to expansion of club, 



Diameter of slender portion, 



Length of club, 



Length of part occupied by 24 largest suckers,.. 

 Length of part occupied by small distal suckers,. 



Greatest breadth of club, 



Diameter, front to back, . 



26-25 



67- 



58-15 



-4-- 6 



8-25 



4-25 



2 60 

 •VO 

 •60 



Near 

 base. 



•35 



-20 



•75 



1-05 



40 



•40 



'20 



•98 



1-40 



At 

 Sin. 



■50 

 -30 

 -60 

 •90 



At 

 10 in. 



-30 

 -20 

 -40 



•70 



•35 

 •15 

 •35 



•85 



•40 



•15 



•40 



1^20 



•30 

 •10 



At 

 15 in. 



At 

 20 in. 



•18 



•16 

 •40 



Sessile arms, from base to particular suckers. 



Measurments of suckers of sessile arms (in inches). 



