42 ACALEPHA. 



TRIBE I. GYMNOPHTHALMATA. 



Vessels simple. 



Vessels 4 : 



Ovaries in the substance of 



the peduncle Sarsiada. 



Ovaries along the vessels on 



the sub-umbrella Geryoniadte. 



Ovaries convoluted, lining 



the stomach Oceaniadae. 



Vessels 8 : 



Ovaries small, oval, placed 

 on the vessels ; disk tall, ob- 

 long Circeada. 



Vessels above 8 : 



Ovaries linear along the ves- 

 sels ; disk depressed .... ^Equoreadae. 



Vessels branched Willsiada. 



FAMILY I. SAKSIARE. 



Sarsia (Lesson) . Umbrella hemispherical ; ovaries 

 not conspicuous ; four marginal tentacles at the 

 extremities of the vessels ; eyes four ; stomach in 

 a very extensile cylindrical proboscis-like peduncle, 

 with a simple orifice. 



S. tubulosa. Fig. 60 ; n. s. 

 pulchella. 

 gemmifera. 

 prolifera. 



Plancia (Forbes). Umbrella hemispherical; 

 ovaries not conspicuous ; two long marginal tenta- 

 cles, and numerous intermediate tubercles, all 

 furnished with eyes ; stomach at the end of a very 

 long extensile, cylindrical, tubular peduncle, with 

 a simple or obscurely-lobed orifice. 



P. gracilis. Fig. 60* ; n. s. 



