736 EDWARD T. BROWNE. 



Subfamily Olindiadae, Haeckel, 1877. 



Petasidae with sensory vesicles situated either in the substance of the umbrella (internal), 

 or on the margin of the umbrella (external); sessile, and without external sensory hairs. 



Genus Aglauropsis, F. Miiller, 1865. 



Generic Character. Petasidae with numerous uniform tentacles, without adhesive disks, 

 and not arranged in groups. 



A. agassizii, Miiller, 1865. South Atlantic; Brazil. 



A. conantii, Browne, 1903. South Atlantic; Falkland Is. 



Miiller's description of Aglauropsis agassizii is very incomplete, in fact, he only gives 

 generic characters. The sjjecific name should either be attached to the next Aglauropsis 

 found on the coast of Brazil, or else placed on the obsolete list. 



Maeotias inexpectata, Ostroumoff, 1896. Ostroumotf has published a brief preliminary Latin 

 description of this genus and species in the Zool. Anzeiger, 1896, and a full description with 

 figures, in the Bulletin of the Imperial Academy of Sciences of St Petersburg, 1896. Unfor- 

 tunately the text of the latter publication is wholly in Russian, and the chief figure is 

 rendered useless by the tentacles being represented merely by a series of closely ruled lines. 

 Ostroumoff points out that the genus differs from Olindias in possessing only flexible ten- 

 tacles, which all hang down from the margin of the umbrella. There are about 300 hollow 

 flexible tentacles, about 100 marginal bulbs, about 200 internal sense organs an-anged in 

 pairs, about 13 to 15 centripetal canals in each quadrant, and gonads along nearly the whole 

 length of the radial canals. Distribution. Europe ; Sea of Azov. As I am uncertain about 

 the structure of the tentacles I have not included this species in the genus Aglauropsis, 

 as it may perchance belong to one of the other genera. 



Genus Gosseu, L. Agassiz, 1862. 



Generic Character. Petasidae with uniform tentacles arranged in eight groups (four 

 perradial and four intez-radial) and a few small isolated tentacles between the groups. 



G. corynetes (Gosse), 1853. North Atlantic, British Isles. Syn. G. circinata, Haeckel, 

 1879. North Atlantic; France. 



Genus Olindias F. Miiller, 1861. 



Generic Character. Petasidae with numerous tentacles, of which there are two distinct 

 kinds. A series (primary) of short stiff tentacles, which are carried outwards and have their 

 bases attached to the ex-umbrella ; and a series (secondary) of long flexible tentacles, which 

 hang downwards from the margin of the umbrella. No adhesive disks on any of the tentacles. 



0. sambaquiensis, Miiller, 1861. South Atlantic; Brazil. 



0. mulleri, Haeckel, 1879. Mediterranean. 



