482 Eev. Canon Norman's Revision 



Total length of Length from froot 



mantle on the margin of fin to the Greatest breadth 



hack. extremity of body. of fin. 



millim. millim. millirn. 



Naples, 9 69 35 25 



,, , 60 30 25 



Nice, 2 105 66 46 



„ „ 93 55 41 



The difference between this and L. media is certainly not 

 sexual. 



17. Loli 'go media (Linne). 

 Lolit/o mbulata, Lamarck, Mem. Soc. Hist. Nat. Paris (1799), vol. i. 



P : i5. 



Loligo spiralis, Ferussac, Diet. Class. Hist. Nat. iii. (1853), p. 67, no. 6. 

 Loliffo parva, d'Orbigny, Ceph. Acet. 1848, p. 130, Calmars, pis. xvii. 



and xxiii. figs. 19-21. 

 Loligo media, Forbes and Hanley, Brit. Moll. iv. 1853, p. 228, pi. QQQ. 



fig. 1 ; Hoyle, Fauna of Liverpool Bay, 1886, p. 279. 



I give the following measurements for comparison with 

 those of the preceding species. The first specimen is a male 

 remarkable for its extremely produced form. 



Total dorsal Length from front 



length of margin of tin to Greatest breadth 



mantle. extremity of body. of fin. 



millim. millim. millim. 



1 . Plymouth, J • . H2 77 28 



2. „ $ . . So 49 30 



3. „ „ . . 83 49 30 



4. „ „ . . 83 53 27 



5. „ „ .. 74 44 28 

 C. „ „ . . 73 42 26 



7. Tenby, 9. . . 82 52 30 



8- „ „ 79 47 28 



!). „ „ 81 52 26 



10. Jersey, ? 76 47 29 



11. „ „ 63 36 21 



These measurements of the two species will show that there 

 is great variation in proportion of parts in each, but that at 

 the same time first that in L. marmorce the portion of the 

 body behind the commencement of the fin is less in proportion 

 to the total length, and secondly that the breadth of the fin 

 is greater in proportion to the distance between its commence- 

 ment and the termination of the body, so that the triangle thus 

 formed is much less produced. Moreover in L. marmorce the 

 fin is continued to the extremity, whereas in L. media it runs 

 out at some distance from it ; in specimen 1 of that species (a 

 male remarkably elongated) it disappears at 45 millim. from 

 the much-produced extremity. 



