Fig. 1. (After Haeckel). 



m. Mouth area. 

 r. Radial pouch? 

 i. Interradial area, 

 c. Bing canal. 

 u. Gelatinous disk. 



PLATE XLV. 



Medttsina quadrata (p. 93). 



Medusina bicincta (p. 94). 

 Fio. 2. (After Haeckel). 

 m. Oral field. 

 r. Radial pouch? 

 i. Interradial area, 

 c. Ring canal? 

 u. Gelatinous disk. 



EULITHOTA PASCICULATA (p. 73). 



Fig. 3. (After a photograph, Haeckel.) The 16 marginal lobes (I) of the umbrella are thrown 

 inward. The 8 incisions of the disk rim in which the eyes (o) reside, and from which 

 the fascicles of tentacles arise (t). are distinctly prominent on the periphery. The form 

 of the mouth (in) and the 4 oral arms (b) which surround it, is not clearly discernible. 

 On the other hand, the dextral half of the radial canal (r) and the crescentic sexual gland 

 (gr) are very sharply defined. 

 Fig. 4. Restoration of this species by Haeckel, after the impression represented by photograph in 

 fig. 3. The 16 lobes of the umbrella margin, which in the impression are withdrawn 

 inward, are here spread out. 

 m. Mouth. 

 b. Oral arm. 

 g. Genital gland, 

 r. Radial canal. 

 I. Marginal lobe. 

 o. Eye. 

 t. Tentacle fascicle. 



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