108 CATALOGUE OF THE MOLLUSCA 
two of them had changed to red, and others were rapidly under- 
going the same process. The change of colour in the cuttle fish 
tribe is well known to naturalists, and we, ourselves, had witness- 
ed it partially in some of the larger species, but so sudden and 
complete a change appeared like magic, and we set about ex- 
amining the process by which it was accomplished. The white in- 
dividuals, we found, on looking more closely, were covered with 
minute spots, which appeared black from the concentration of the 
colouring matter, but at the will of the animal, or some other ex- 
citing cause with which we are unacquainted, they gradually en- 
larged until they spread out into circular red blotches, the edges 
of the adjoining ones nearly touching each other, and thus chang- 
ing the general colour of the animal tored. By an inverse process 
the colour was again changed to white ; becoming red and white 
alternately several times during the day. Unfortunately they 
did not long survive. The young Sepiole on first bursting from 
the egg, appear to have the form and habits of the adult animal, 
with the exception that the tentacles are then not longer than 
the surrounding arms. The ink bag contained ink, which was 
ejected by some of the individuals before dying. 
3. LOLIGO, Lamarck. 
1. L. vunearis, Zam. (Common Calamary). 
Sepia loligo, Penn. Brit. Zool. iv. 53, t. 27, f 43. 
Loligo vulgaris, Johns. in Berw. C. Proc. 1. 198. 
Not uncommon, Mr. Hogg states that they are much used 
_ for bait by the Hartlepool fishermen, who call them ten-tails. 
The spawn of the Calamary is remarkable on account of its 
peculiar form and large size in proportion to the animal. A fine 
specimen of it is preserved in the Newcastle Museum. It con. 
sists of a great number of transparent gelatinous tubes, rounded 
at one end and attached by the other to the general mass—the 
whole appearing like an immense bundle of sausages. They are 
filled with ova, each containing a single embryo. The specimen 
in the Museum appears to be in the last stage of development, 
and the young animals may be readily seen through the transpa- 
rent envelope, 
