DIPHYOPSIS MITRA. 



259 



anterior nectophores. 



1 posterior nectophore. 



Also several typical specimens from the West Indies. 



The anterior nectophores of this species have been well described by Lens and 

 Van Riemsdijk. They are readily separated from those of Diphyes appendicu- 

 lata which they resemble in general appearance by the following characters: 

 the general form is high, pyramidal, ridges but slightly arched; symmetrical. 

 There a,re five ridges at the apex; and there is no variation from this number 



