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Note

1. Eyes
   1. Moderate size; eye diameter - 33.9% of head width.
      
      
2. Funnel
   1. Funnel organ V-shaped.
      
      
3. Fins
   1. Anterior margin with lobe near attachment.
      
      
4. Gills
   1. Half-orange shape.
   2. 7-8 primary lamellae.
      
      

      Click on an image to view larger version & data in a new window

      

      Figure. Ventral view of the mantle cavity of G. boylei, paratype, female, 115 mm ML. Drawing from Collins (2003).

5. Optic lobes and nerves
   1. Optic lobe spherical.
   2. Single optic nerve bundle passes through/by white body.
   
   
   

   Click on an image to view larger version & data in a new window

   

   xxFigure. Optic lobe, optic nerve tract, white body and eye of G. boylei, paratype, male, 63 mm ML. Drawing from Collins (2003).

6. Digestive tract
   1. Radula present; poorly developed; homodont.
   2. Anterior salivary glands lie on buccal mass; posterior salivary glands present, small, located posterior to brain.
   3. Esophagus twice length of intestine.
   4. Intestine straight.
   5. Digestive gland unilobular.
   
   
   

   Click on an image to view larger version & data in a new window

   
   

   Figure. Digestive tract of G. boylei. Top - Lateral view. Bottom - Dorsal view of brain, buccal mass, esophagus and posterior salivary glands, paratype, male, 63 mm ML. Drawings from Collins (2003).

7. Beaks
   1. Lower beak with rounded hood; wing with diagonal flexure; lateral walls without ridges or folds. Photographs of the beaks can be found here.
      
   
   
   

   Click on an image to view larger version & data in a new window

   
   

   Figure. Upper (left) and lower (right) beaks of G. boylei, paratype, male, 63 mm ML. Drawings from Collins (2003).

8. Male reproductive tract
   1. Accessory gland I largest.
   2. Penis long.
   
   
   

   Click on an image to view larger version & data in a new window

   

   Figure. Dorsal (bottom) and ventral (top) views of the male reproductive tract of G. boylei, paratype, 63 mm ML. Drawings from Collins (2003).

9. Female reproductive tract
   1. Proximal portion of oviducal gland one third, cream color; distal portion two thirds, green/brown.
   
   
   

   Click on an image to view larger version & data in a new window

   
   

   Figure. Ventral view of the female reproductive tract of G. boylei, paratype, female, 115 mm ML. Drawing from Collins (2003).

10. Pigmentation
    1. Entire digestive tract darkly pigmented.
    2. Skin deep red in fresh specimens, reddish-brown in preservation.
    3. Pigmentation of oral and aboral surfaces of arms greater than mantle.
    4. Posterior margin of fin purple.
       
       
11. Measurements
    1. Measurements and counts can be found here.

Comments

The above description is from Collins, 2003.

References

Collins, M. A. 2003. The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the North-east Atlantic, with descriptions of three new species. Zoological Journal of the Linnean Society, 139 (1): 93-127.