CYMODOCEA. 65 



The two upper wings in this family are broad and 

 rounded, while the lower ones are nearly linear ; the neck 

 appears to be elongated, and the mouth is furnished with 

 four lobes. 



Genus CYMODOCEA, D'Orbiguy. 



Animal as in family. 



Ex. 0. diaphana, D'Orhign^, pi. 7, fig. 18. 



Of this curious genus only a single species, which in- 

 habits the Atlantic Ocean, has been observed ; the body is 

 translucent, showing the violet viscera ; the medial ap- 

 pendage is elongate and truncated, the upper pair of broad 

 ovate fins has the lower edges thickened, and the lower 

 pair is narrow and digitated. 



VOL. I. 



