EEPORT ON THE CEPHALOPODA. 



155 



teeth on its distal side, and is smooth on the proximal. The only mature specimen 

 being a female, no hectocotylus was observed. The buccal memhrane has five points, 

 each of which bears two or three small suckers ; the two ventral points are rounded off, 

 and just within the ventral margin is a small papilla surrounded by two elevated rings, 

 for the i-eception of spermatophores (fig. 4). Both the outer and inner lips are folded. 



The Tentacle is faintly three-sided and shorter than the body; the cluh (fig. 5), which 

 is expanded and triangular in section, is one-third as long ; it has a protective membrane 

 on either side and a web externally ; in the centre are eight large suckers, three times 

 the diameter of the lateral ones ; at the proximal end are about nine suckers, gradually 

 increasing in size, and at the distal end more than twenty rows arranged in four series, 

 gradually diminishing. The largest suckers are scarcely at all oblique, and have the 

 margin cut up by radial grooves, into a number of small papillae (figs. 6, 7), an arrange- 

 ment also found on the outer margin of the lateral suckers, but not in the terminal ones. 

 The horny rings of the largest suckers are smooth ; those of the lateral and terminal 

 suckers bear about twelve long distant teeth on their outer margin (figs. 8, 9). 



Tlie Surface is smooth. 



The Colour is pinkish-yellow, with purplish chromatophores. 



The Gladius (fig. 10) has the usual form, but the narrow anterior part passes very 

 gradually into the expanded blade. 



Dimensions. 



Length, total, 



End of body to mantle-margin, 



End of body to eye, 



Breadth, of body. 



Breadth of head, 



Eye to edge of umbrella, 



Length of fin. 



Breadth of fin, . 



Breadth of each lobe, 



Diameter of largest sucker on sessile arm. 



Diameter of largest sucker on tentaclej ., 



Length of fii'st arm, 

 Length of second arm. 

 Length of third arm, 

 Length of fourth arm. 

 Length of tentacle. 



163 mm. 



19 



16 



9 



50 



42 

 15 

 1-25 

 2-75 

 Eight. 

 15 mm. 

 22 „ 



20 

 25 

 62 



Left. 

 15 mm. 

 22 



31 „ 

 25 „ 



The present form differs from all known species of Loligo (except Loligo reynaudii, 

 d'Orbigny) in the absence of teeth in the large tentacular suckers,^ these two species 



1 Mutilated. 



2 Loligo bremceps, Stp. (Lenz, Jahrh. Coram. Kiel, Jahrg. iv. v. vi., Heft 2, Anhang 1, p. 23, 1878), has the teeth on 

 the suckers very variable in size and number, and here and there a perfectly smooth horny ring occurs, but this does 

 not seem likely to be confused with the constant absence of teeth observed in the two species here compared. 



