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Vol. VIII. DETROIT, JUNE, 1888. No. 6 



ORIGINAL COMMUNICATIONS. 



T 



A NEW MAEINE LARVA AND ITS AFFINITIES. 



J. WALTER FEWKES. 

 [plate VI.] 



HERE are in the waters of the Atlantic, near the coast of the 

 United States, a large number of marine larvae, very differ- 

 ent from characteristic larvae of the European seas, of the adult of 

 which the naturalist is in profound ignorance.* The adults of these 

 larvae may have been described and figured, may be well known, but 

 from the fact that many young marine animals are so different^from 

 the adults, their relationship is unsuspected, although both mature 

 and immature stages are known. It is certainly a desirable thing 

 to trace these larvae to their parents, as a part of the great study of 

 the metamorphosis of marine animals. This special line of zoo- 

 logical work has many attractions to an earnest band of working 

 naturalists, and offers remarkable possibilities for discovery. The 

 same branch of marine research has been prosecuted for many years 

 on the shores of the North Sea and the Mediterranean, and a large 

 number of larvae, known to be such, but which have as yet not been 

 raised into adults, have been described and figured. This pro- 

 visional nomenclature of a larval animal known to be such has 

 been a means of attracting the attention of other naturalists to the 

 lai^va, and in many instances has led to the discovery of the adult. 



The larval forms of marine animals of the coast of New 



* Conversely, also, we are ignorant of the young of a much larger number of adult 

 animals of our seas and bays. 



