BY B. VON LENDENFELD, PH.D. 587 



36. GENUS TIARA. Lesson. 



Tiavinfe with numerous tentacles in one row (8-16 or more.) 

 Abaxial ocellae outside on the base of the tentacles. No stalk to 

 the stomach. Edges of the stomach coalesce above through four 

 mesenteria with the four radial canals. (Therefore four narrower 

 and wider funnel cavities between the four interradial stomach 

 surfaces and the SubumbreUa.) Gonads four, pinnate leaves or 8 

 longitudinal masses in the surface of the stomach ; which bear 

 irregular transverse folds. The Polyp colonies are unknown, 

 but according to Haeckel probably similar to Clavula. 



181. TIARA PAPUA. Haeckel. 



This species, described as Turns papua by Lesson (1), Eydoux 

 et Sanleyet (2) and L. Agassiz (3), and as Aegnorea mitra by 

 Lesson (4), has been found at New Guinea (Waigiu. Lesson), and 

 in the Indian Ocean (Eydaux et Sanleyet), and has been referred 

 to the Genus Tiara by Haeckel (5.) 



37. GENUS TURRITOPSIS. MacCrady. 



Tiarince with numerous tentacles (12-16 or more) in one row. 

 One Ocellus inside on the axial side of the base of the tentacle, 

 Stalk to the stomach. No Mesenteria. Gonads four simple 

 perradial, simple or bipartate, longitudinal folds in the wall of 

 the stomach, divided from each other by a deep furrow, with 

 smooth surface. 



Mouth flaps with stalked nettle warts on the margin. 



The Polyp colonies are Tubularians. 



(1) Lesson. Prodrome des Acalephes, 1843, p. 2S3. 



(2) Eydaux et Sanleyet. Voyage de la Bonite. Tom. II., p. 639. 



(3) L. Agassiz. Monograph of Acalephte. Cont. Natural Hist., N.S.A. 

 Vol. IV, p. 346. 



(4) Lesion. Voyage de la Coquille. Zoology, p. 127. 



(5) E- Haeckel. System der Medusen. Seite, 5, 8. 



