584 



MEDUSA OF THK WOULD. 



Mature medusa. — Bell hemispherical, smaller than in D. rjuiri(juccirrlia being about 

 70 mm. in diameter. Clefts in lappets adjacent to sense-organs fully as deep as those between 

 the remaining lappets instead ot being mere shallow notches, as in D. quinqueiurha. The 

 tertiary tentacles arise from clefts between the lappets, not troni the floor of the subumbrella, 

 as in D. quinquecirrha. The 8 primary tentacles are about 3 tmies as long as the bell-diameter. 

 The 16 secondary tentacles, however, are only about half, and the 16 teniary, one-quarter 

 as long as the primary ones. 



General color dull milky-white, exumbrella sprinkled over with ocher-yellow-colored 

 spots, thickl\' clustered at aboral pole. Genital organs slightly )ellowish, a delicate irides- 

 cence over the long, flexible mouth-arms. 



Fig ibf.—Daciylomrira lactca, aboral view, three-fourths natural size. From nature, 

 by the author. Showing variable character of the lobes and tentacles. 



This species is found at Rio Janeiro, Brazil, and at Jamaica and Cuba. In Havana 

 Harbor it is abundant and mature in Februar\. 



\ mature specimen fouiul by me off Port Ro)al, Kingston 

 Harbor, Jamaica, on March 20, 1909, was of the following 

 dimensions in millimeters: Bell 66 wide, somewhat flatter 

 than a hemisphere, palps 50, longest tentacles 60 long. Exum- 

 brella regularly and thickly besprinkled with vet)- small, low- 

 l)'ing, milk\-yellow colored netlling-vvarts. 16 spoke-like stripes 

 of dull ocher color and numerous russet-brown nematocyst-warts 

 at the margin of the exumbrella. Gelatinous substance and ten- 

 tacles milky. Gonads dull milky-pink. This specimen was very 

 irregular in the development of its tentacles and lobes, the 8 

 octants being as shown in the table (Hg. 369). 



