30 PEEIAVINKLE. 



He is called by naturalists T. littorem, from Uttoralis — belong- 

 ing to the shore, and often eaten by boys and girls with great 

 relish; but he is not very digestible, and sometimes occasions 

 dangerous disorders. The Swedish peasants believe that when 

 the Periwinkle crawls high upon the rocks, a storm is brewing 

 from the south; but Linnaeus quotes a Norwegian author to 

 shew that according to popular belief, it foretells the approach 

 of a land wind with a calm on shore. Man may learn much 

 of elemental changes from an observation of the movements 

 and habits of all living creatures, which are instructed by 

 God to provide for their safety and wants, and often perceive, 

 long before man himself does, the indications of calm and 

 tempest, rain and drought, etc. But our little Turlo, what 

 of him? will you boil him, and pick out his curled-up form 

 with a pin? or let him go crawling about the rocks, feeding 

 upon the delicate earlier growth of marine vegetation? In 

 the former case, 3'ou will have to reject the little kind of 

 horny scale attached to his foot, which forms, when he retires 

 into his habitation, a closely-fitting door to make all snug. 



Several species of this genus are found on our shores; one 

 of those is the Turho rudis, or Red Turbo, which has a very 

 thick periwiukle-like shell, about three-quarters of an inch 

 long; the colour is dull red, fawn, or drab. 



Of the foreign 'Turhince, sometimes called Turban Shells, 

 we will now introduce two or three species, which will be 

 found on Plate III. Fig. 3 is the Marbled Turbo, {T. marmo- 

 ratus,) from the Latin marmor — marble; a large handsome shell 

 well known to conchologists, and a native of the Indian seas. 

 Fig. 4 is the Twisted Turbo, (T. torquatus;) this shell, when 

 deprived of its outer coat or layer, is beautifully nacreous, or 

 if we may so speak, mother-of-pearly. The specimens which 

 have reached England were brought from King George's Sound. 

 Pig. 5 is called Cook's Turbo, {T, Coohii:) this is a handsome 

 South Sea shell, oftentimes of large size. It has been found 

 in great numbers on the coast of New Zealand. 



On Plate lY, we have placed two very curiously formed 

 and marked shells, called Wentletraps, also belonging to the 

 family Turhinida . The scientific name is Scalaria, from the 

 Latin scala — a ladder, which the ribbed shells are supposed 

 to resemble. Of this genus there are about eighty distinct 



