LOLIGO. 225 



When lying quietly at the bottom of the basin it was 

 sometimes almost white, but on passing my hand over it, 

 became instantly of a bright liver red, or rather apothecary 

 rose colour. It displayed various degrees of this colour, 

 occasionally variegated with blotches of white. Its varia- 

 tions of tint were rapid beyond comparison with the 

 chameleon's. I observed that a narrow silvery line ran 

 down each side, somewhat similar to that on the side of a 

 sand-smelt, but of rather milder lustre. After death these 

 stripes disappeared." 



Dr. Ball's specimen (kindly transmitted to us for exa- 

 mination) measures 1*7 inch in length of body; - 5 inch, 

 length of head ; and four inches, length of tentacles. A 

 detailed measurement of it is published with the original 

 notice of the species. That of which notes and a drawing 

 were obligingly communicated by Mr. Saxby measured in 

 inches, 5*75, total length; the head, 1*4; the longest 

 arm, 2*5; the body, 2*0; the breadth of the body, 1*9. 

 This is assuredly a rare animal. 



LOLIGO. Lamarck. 



Body fleshy, firm, cylindrical, elongated, towards its 

 posterior extremity flanked by two triangular fins, which 

 run to the tail. Locomotive apparatus formed of two ob- 

 long margined pits placed at the base of the funnel, and of 

 corresponding linear prominent crests on the inner margin 

 of the sleeve. Eyes covered by an epidermic expansion, 

 pierced with a small opening ; no lacrymal sinus. Arms 

 ten, two of them tentacular, imperfectly webbed. Pen 

 corneous, flexible, lanceolate, as long as the body, termina- 

 ting in an obtuse point. 



The cuttle-fishes of this genus and the next are known 



VOL. IV. G G 



