264 



Wm. E. Hoyle, 



264 



rounded lateral angles. The mantle margin has a very well marked prominence in the dorsal median 

 line, and slighter projections on either side ventrally. The siphon is well developed reaching forward 

 as far as the anterior margin of the eye. 



The Head is of moderate size ; the auricular crest is well developed, and presents a double 

 sigmoid curve. 



The Arms are unequal, the Order of length being 3, 4,2, 1 ; the longest is nearly half the length 

 of the mantle. They taper gradually to very fine points, and have the arrangment of keels and protective 

 membranes usual in the genus. The left ventral arm is hectocotylised. In the last 2 cm the suckers 

 gradually disappear giving place to conical papillae of the usual type. The suckers are in two series 

 obliquely set. The horny ring (Textfig. 5) bears twelve stout teeth on its distal semicircumference. The 

 papillated area is of the usual structure (Textfig. 6). The buccal membrane has the usual seven angles, 

 long and pointed and provided with from eight to ten suckers on the inner aspect (Textfig. 4). Both the 

 outer and inner lips are thick and folded. 



Fig. 4. 



Fig. 5- 



Fig. 6. 



Fig. 7- 



Fig. 4. Loligo reynaudi, sucker from the buccal mem- 

 brane. X 40. 



Fig. 5. Loligo reynaudi, sucker from one of the arms. 



X 20. 



Fig. 6. Loligo reynaudi, portion of the papillary area 

 from a sucker. X 7°- 



Fig. 7. Loligo reynaudi, a lateral tentacular sucker. X 2 °- 

 Fig. 8. Radula of Loligo reynaudi. X 2 5- 



The Tentacles are not quite so long as the mantle, with stout rounded stems; the club occupies 

 nearly half their length and is but slightly expanded. About ten suckers in its middle portion are much 

 enlarged and have a smooth horny ring. Both the proximal and distal suckers as well as those on 

 the margin of the club are very oblique and have narrow acute teeth with wide interspaces between them 

 (Textfig. 7). 



The Surface is smooth. 



The Colour is a dull yellow with purple chromatophores much more closely set above than below, 

 giving the back a deep purple appearance. 



The Gladius is of the usual structure, but is long and narrow in correspondence with the form 

 of the mantle. 



