ACALEPH.E. 113 



Carol Tom. x. s. 410 416, Tab. xxxv. fig. 42 ; ESCHSCHOLTZ in o. v. 

 KOTZEBUE'S Entdedcungs-veise in. 1821, s. 193, and Syst. der Acalephen, s. 

 157 164. LEUCKAKT in ZeitscJir. fur Wiessensck. Zoologie in. 189213. 



Athorylia EsCHSCH. (Eliodophysa BLAINV.) [The motor organ 

 of the colony a coronet of solid bracts, or covers, fixed to the stem 

 immediately beneath the air-bladder. Polyps, feelers and prehen- 

 sile filaments attached to the very short remainder of the stem. 



Sp. Athorybia rosacca ESCHSCH. KOELLIKEE Die Siphonoph. Tab. vn. The 

 Polyps are not nearly as numerous as the bracts. In large colonies KOEL- 

 LIKER could not count more than eight of them whilst the bracts numbered 

 20 40. They are seated in the space covered by the bracts, and with their 

 points project somewhat beyond them when the coronet opens, but lie entirely 

 concealed when it closes. The feelers are more numerous than the polyps 

 (n 20), long and nearly filiform, and play between the bracts when they 

 open. The lateral stibdivisions of the prehensile organs terminate by two 

 filaments. 



b) with short axis or stem and swimming bells. 



Pliyssophora FORSK. Several swimming bells disposed verticil- 

 lately round the common stem. The polyps with feelers and 

 prehensile organs, but without bracts (GEGENBAUER), attached to 

 the remainder of the stem immediately below the swimming 

 column.] 



Physsophora (from (f)v<ra or cpva-a-a), literally bladder-bearer, was 

 compared by FORSKAEL to the so-called Cartesian Imp (situs animalis 

 hydrostaticus sublatus pulmone extra corpus, ad formam machines 

 quam Diabolum Cartesianum appellamus). Descr. Animal, p. 112. 



Sp. Physsophora hydrostatica FOESK. Icon. Rer. nat., Tab. xxxm. fig. E, in 

 the Mediterranean ; Physsoph. muzonema P^RON, Voy. aux lerres aiistrales, 

 PL 29, fig. 4; LESSON Acalephes, PL 9, fig. 2, in the Atlantic, &c. 



The species are not sufficiently distinguished ; FOKSKAEL figured an im- 

 perfect specimen, which for the most part had lost the suctorial tubes and 

 other appendages. The figure given by PHILIPPI not long ago represents 

 the animal in an uninjui'ed state ; this writer supposes that the specimen 

 found by him in the Mediterranean belongs to another species, which he 

 names Physsophora tetrasticha. There are four rows of swimnvng bells, and 

 in each row four. See his Memoir in MUELLER'S Archiv. 1843, s. 58 67, 

 Taf. v. [KOELLIKER states that this of PHILIPPI is identical with the Physso- 

 phora rosacea of DELLA CHAIJA, Descr. degli anim. invertebr. IV. pag. 119, 

 Tav. 33, fig. 2.] 

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