4 G. 0. Sårs. 



therefore, though rather exhaustive, does not give us com- 

 plete evidence of the true relation of this form to other 

 Diaptomidæ, and it even appeared somewhat uncertain 

 whether it should, on the whole, be referred to the fresh- 

 water or to the marine fauna, since it was said to have 

 been found in a salt marsh. As this Copepod has not since 

 been observed by any carcinologist, it has stood as a rather 

 doubtful form, tending even to be altogether forgotten. 

 In their recent work: «Revision des Calanides d'eau douce», 

 MM. J. de Guerne and J. Richard have, however, again 

 called attention to this form, reproducing Lovenes original 

 description, together with some of his detail-figures. The 

 genus Broteas is here retained, and placed next to the 

 genus Diaptomus ; but other carcinologists, for instance 

 Mr. Poppe, are of opinion that it should more properly be 

 combined with Diaptomus, to which it certainly seems to 

 bear a great resemblance. Such is the present state of our 

 knowledge of this form, of which a renewed examination seems 

 indeed to be highly necessary. I was therefore greatly 

 interested, on examining some samples kindly sent to me 

 by Dr. Purcell, in finding numerous well-preserved specimens 

 of a large Diaptomid, in which I at once recognized the 

 species originally described by Loven. The situation in which 

 the samples were taken does not leave any doubt that this 

 Copepod is a true fresh-water form, and a closer anatomical 

 examination of the specimens has fully convinced me of the 

 validity of the genus, and at the same time has shown that 

 another South African form previously described by the 

 present author under the name of Paradiapiomus JameUatus 

 is in reality congeneric with Lovenes species, though evidently 

 specifically distinct. I am thus now enabled, through the 

 kind assistance of Dr. ' Purcell, not only to give a full 



