384 MARGARET ROBINSON. 



dishes, I could never obtain a fertilised egg. I bad previously 

 tried to do this in Jersey, where Mr. James Hornell kindly 

 provided me with specimens. This absence of females with 

 eggs in the brood pouch from the shore leads me to believe 

 that the animals go into deeper water to breed. All the 

 people who have worked at the development of Neb alia — 

 Metschnikoff, Claus, Butschinsky — have obtained their 

 material from tideless seas. 



From many practical hints and much other help I am in- 

 debted to the kindness of Professor E. A. Minchin. I wish 

 here also to thank my many friends and fellow-workers for 

 their assistance, particularly Dr. E. J. Allen, who has read 

 through this manuscript and made many valuable suggestions 

 and criticisms. 



Historical. 



The earliest notice of Nebalia is that by Otho Fabricius 

 (1780) in his Fauna Green Ian die a. This is a not very 

 exact description of the external features, and is accompanied 

 by a little figure. The next account is that of Herbst (1796). 

 It is a translation of the description given by Fabricius with 

 a copy of his figure. Both of these authors call the animal 

 Cancer bipes. 



Montagu (1815) found Nebalia on the coast of Devon, 

 and described it under the name ofMonoculus rostratus. 

 The first person to call it Nebalia was Leach, who described 

 it in the 'Zoologist's Miscellany' (1813), and noted it as a 

 very distinct genus belonging to the Crustacea Malacostraca. 



Latreille, in his text-book (1831), places Nebalia with 

 Cuma in an order which leads from the sessile-eyed crusta- 

 ceans and those with stalked eyes, especially from My sis, to 

 the Cyclops. He calls the order Diclapoda " Ce nouvel 

 ordre comprendra les genres Nebalie, Pontie, Condylure, efc 

 Cume, qui se lient d'une part avec les Mysis ct de I'autre 

 avec les Cyclopes." He lays stress on the fact that Nebalia 

 carries its eggs in a brood pouch, as does Mysis. 



