168 THE SCYPHOMEDUS.E OF THE SOUTHERN HEMISPHERE, 



Size: Breadth of Umbrella, 24 mm., height, 30 mm. 

 Locality : South Pacific Ocean, near New Zealand. Weber. 



4. Family. Periphyllidce. Haeckel, 1877. 

 Peromedusae with 12 tentacles and four marginal organs of sense. 

 With 16 rnargin laps. Exumbrella with 16 Pedalia, and circular 

 muscle ; on either side of the Pedalia a pouch. Festoon canal 

 consists of 32 lap pouches. 



6. Gen. Periphylla. Steenstrup, 1837. 

 With four perradial pouches in the mouth tube, and 4 basal 

 funnel cavities. The 4 interradial Taeniols are hollow caves, along 

 the whole length of which there are two rows of G astral filaments. 



7. sp. Periphylla Peronii. Haeckel, 1879. 



Haeckel System der Medusen. Seite, 420. 



Charybdea periphylla. Peron et Leseur. Tableau, etc., p. 332. 



Charybdea periphilla de Blainville, 1834. Actinologie, p. 275. 

 Atlas pi. 31, fig. 1, 



Charybdea periphylla. Milne Edwards. 1839. Cuvier, Regne 

 Animal, Illustre., pi. 55, fig. 2. 



Charybdea periphylla. L. Agassiz, 1862. Monograph of the 

 Acalephre. Contributions etc. Vol. IV., p. 173. 



Umbrella flat conic, broader than high. Margin laps triangular 

 pointed, their distal wings narrow. The tentacle laps projecting 

 a little more than the laps of the marginal organs of sense. Ten- 

 tacles long and thick, double as long as the height of the 

 Umbrella, at the base half as broad as the margin laps. Mouth 

 tube cubic. No barbs. 



Colour : Subumbral surface of the Umbrella brown, tentacles 

 ) ellowish. 



Size : Breadth of Umbrella, 60 mm., height, 50 mm. 



Locality : Equatorial part of Atlantic Ocean. Peron. Coast 

 of South Africa. W. Bleek. 



8. sp. Periphylla mirabilis. Haeckel, 1879. 

 Haeckel System der Medusen. Seite, 422. Die Tiefsee Medusen 

 der « Challenger " Expedition. Seite, 54. Tafel, XVIII, XXIII. 



