ACALEPH A, 12% 
Callianira PRON. Body lobate or supplied with lateral 
wings. 
Subgenera: Hucharis Escuscu., Leucothea Mrrrens, Mnemia 
Escu. (Alcinoé Rane), Leswewria Minne Epw., Calymma Escuscn. 
(Ocyroé Rana), Callianira PERon, Escuscu. 
In bringing these numerous genera together, and giving greater 
extension to the name Callianira, than has been done by former 
writers, my sole object is to facilitate the review, and at the 
same time to indicate the aftinity of these animals. Beyond doubt 
the genera are too numerous here. The genus bucephalon of 
Lesson (Callianira bucephalon Ruynaun, Less. Centur. zool. Pl. 28) 
also belongs here, and probably does not differ from Calynma 
Trevirani. 
Sp. Callianira hexagona Escuscu., Callian. Slabberi Dz Haan, Natuur- 
kundige Bijdragen 1. 1827, pp. 150—152; this species has been con- 
founded with Beroé hexayonus of BRUGUIERES (found at Madagascar). 
In the genus Callianira proper, there are two filiform branched tentacles ; 
the other subgenera have mostly four conical or triangular ciliated 
tentacles. 
Cydippe Escuscu. (Beroé FREMINVILLE, MeErRTENs,) Body 
globose or ovate, with eight longitudinal, ciliated ribs. Tentacles 
two, retractile within two subcutaneous vesicles. 
Sp. Cydippe pileus, Beroé pileus Munuu., Volvox bicaudatus L.; L. Tu. 
Gronovius in Uitgezochte Verhandelingen Amsterd. 1758, 11. p. 464, 
Pl. 26, f. r—5 ; Basten Natuurk. Uitsp. 1. Pl. xiv. fig. vi. vu.; Cuv. R. 
An. éd. ill., Zooph. Pl. 56, fig. 2, &c. (Since the vesicles, in which the 
tentacles lie, open towards that extremity of the body which is opposite to 
the mouth, the nervous ring (?) described by GRANT, cannot surround the 
mouth, (see above, p. 104). The tentacles are able to lengthen themselves 
greatly ; why EscuscHourz describes them as indivisa, is not apparent ; at 
least in most species they are much divided. 
B) Stomach large. A circle of vessels (aqueducts) round the oral 
aperture. 
Beroé Escusca. (spec. of the genus Berod Gronov., MUELL. and 
others) Jdya Freminy., Oxen, Mertens. Body oval, ribbed, 
with large circular aperture beneath. 
Sp. Beroé ovata Brown, nat. Hist. of Jamaica, Pl. xtv. fig. 2; (this animal 
was the first named Beroé; LinNa#uS named it in the tenth edit. of the 
Syst. Nat., Medusa Beroé, in the twelfth (1767) Volvox Beroé) ;—Beroé 
Forskilii, Medusa Beroé Forsk., Mitne Epw. Ann. des sc. nat. 2° série, 
Tom. xvi. Zool, Pl. 5,6; Cuv. Réegne Anim. éd, illustr., Zooph. Pl. 56, 
fig. 1, &e. 
