Molluscs. 



25 



The diminuti\'e Sepiola ronddeti (Fig. 21) is common in 

 many places, and great numbers are taken by the shrimpers ; 

 examples are often found mixed with whitebait. The bod}' 

 IS short, \\\i\\ wing-hke lateral expansions. 



The Squids (Loligo forbesi and L. snbiilata) differ from the 

 Cuttlefish 111 their longer body, pointed behind (Fig. 22) ; the 

 first species is the larger and usually measures over a foot 

 when adult, the tentacles not included. A specimen taken 

 by spratters at the mouth of the Colne. in No^'ember, 1891, 

 measured, according to Dr. Jlurie, two and a-half feet, body 

 and shorter arms included, its pen (cuttle-bone) bemg some fifteen 

 inches long. The eggs 

 of the Squids are 

 colourless and trans- 

 parent, and form clus- 

 ters of up to nearly 

 forty thousand in the 

 larger species. 



The Gastropods, 

 which follo\\' the Ce- 

 phalopods in a natural 

 classification, form a 

 \'ery large group. 



FIG. 21. SEPIOLA. 



FIG. 



-LOLIGO FORBESI AND PEN. 



including such well-known examples as the whelks, periwinkles, 

 limpets, snails and slugs, uni^'alve or with the sheU reduced or 

 wholly absent. To these may be added the outlj'ing group 

 typified by the peculiar form known as Chiton. The more typical 



