BY R. VON LENDENFELD, PH.D. 271 



Species. Dactylometra lactea. 



Haeckel, System der Meclusen. Seite, 517. 



Dactylometra lactea. L. Agassiz, 1862. Monogr. Acal. Con- 

 tributions to the Natural History of the U.S.A., IV., p. 166. 



Chrysaora lactea. Eschscholtz, 1829. System der Acalephen, 

 p. 81. Taf., VII., fig. 3. 



Umbrella vaulted, semi-spherical. Mouth-arms short and 

 broad, the 8 primary (adradial) and the 16 secundary Tentacles of 

 equal length, 2-3 times as long as the breadth of the Umbrella. 

 The 16 tertiary Tentacles much shorter, not so long as the basal 

 distance between two long Tentacles. 



Colour : Milky-white, slightly rose coloured. Mouth-avms 

 colourless. Tentacles pale purple. Marginal bodies yellow. 



Size : Breadth of Umbrella, 50-80 mm. Height, 30-60 mm. 



Locality : Atlantic Coast of South America, Rio Janeiro. 

 (Eschscholtz.) 



Family. Cyaneid^e. 



Discomeclusee, with a simple cross-shaped mouth, surrounded 

 by four adradial, folded mouth-arms. Gasti'al cavity, with 16 or 

 32 broad radial pouches, and branched coecal flap-canals, without 

 a ring-canal. 8 or 16 marginal bodies, and 8 or more long hollow 

 tentacles. 



Genus. Procyanea. 



Cyaneida 3 , with 8 marginal bodies and 8 adradial alternating 

 tentacles of the Subumbrella. There are 8 pairs of flaps on the 

 margin of the Umbrella. 



Species. Procyanea protosema. 



Haeckel, System der Medusen. Seite, 524. 



Umbrella slightly vaulted ; orbicular. 2-3 times as broad as 

 high. Manubrium quadrilateral prismatic in the upper-half, in 

 the lower-half split into 4 narrow lancet-shaped mouth-arms. 

 Gonads, 4 narrow simple folded bands in the lower part of the 

 gastral cavity, but not hanging down. 16 flaps of the margin of 



