APPLE -LIKE VARIETY. 37 



extending from one margin to the opposite, and meet- 

 ing in the central orifice, looking as if it had heen cut 

 with a knife. The animal remained in this state all 

 through the evening and night, and in the morning 

 slowly retracted its pouting lips, and resumed its 

 ordinary- appearance. 



On the other hand- the same excellent authority 

 affirms that A. crassicornis never endues itself with an 

 extraneous covering, a hahit which he notices as dis- 

 tinctive of A. coriacea. Now I generally find my 

 specimens, which are abundant on this coast, covered 

 with a coating of gravel, adhering to the warts, which 

 however is soon thrown off in captivity. Mr. Couch's 

 description too of A. cor. agrees closely with mine. 

 I particularly notice, in the variety I am about to 

 describe, the thickened rim of the body outside the 

 tentacles, which comes to a distinct edge all round, 

 crenated Avith close-set, yet isolated, small Avhite 

 glandular knobs. 



I have no doubt that the species is the A. coriacea 

 of Eapp, and the A. gemmacea of Dalyell; but 

 throughout this volume I have taken as my standard 

 of nomenclature the Brit. Zooph. of Dr. Johnston, 

 the second Edition. 



A more common and still more beautiful variety 

 has the body of a clear green, more or less inclined to 

 olive, and profusely marked with crimson, arranged 

 in longitudinal stripes of irregular form and size, 

 varying from fine undulating lines to very broad 

 bands; the whole presenting an appearance, especially 

 when the tentacles are withdrawn, like that of some 

 apples that are streaked with red. The warts are, as 



E 



