ACALEPH. 113 
Carol. Tom. x. s. 410—416, Tab. xxxv. fig. 42 ; EscHSCHOLTz in o. y. 
Korzesur’s Lntdeckungs-veise 111. 1821 » 5. 193, and Syst. der Acalephen, s. 
157—164. LeucKarr in Zeitschr. fiir Wiessensch. Zoologie 111. 189—213. 
Athorybia Escuscn. (Rhodophysa BuAtxy.) [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 rosacea Escuscu. KornurKer Die Siphonoph. Tab. vu. The 
Polyps are not nearly as numerous as the bracts. In large colonies KoEn- 
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 
(11—20), long and nearly filiform, and play between the bracts when they 
open. The lateral subdivisions of the prehensile organs terminate by two 
filaments. 
6) with short axis or stem and swimming bells. 
Physsophora 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 pica or pioca), literally bladder-bearer, was 
compared by Forskaet to the so-called Cartesian Imp (situs animalis 
hydrostaticus sublatus pulmone extra corpus, ad formam machine 
quam Diabolum Cartesiamum appellamus). Deser. Animal. p. 112. 
Sp. Physsophora hydrostatica Forsx. Icon. Rer. nat., Tab, XXxim. fig. EB, in 
the Mediterranean ; Physsoph. muzonema Pron, Voy. aux terres australes, 
Pl. 29, fig. 4; Lesson Acaldphes, Pl. 9, fig. 2, in the Atlantic, &e. 
The species are not sufficiently distinguished ; ForskaeL figured an im- 
perfect specimen, which for the most part had lost the suctorial tubes and 
other appendages. The figure given by Putriprr not long ago represents 
the animal in an uninjured 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 swimming bells, and 
in each row four. See his Memoir in MUELLER’S Archiv. 1843, 3. 58—67, 
Taf. v. [Kontrixer states that this of Pamirrtis identical with the Physso- 
phora rosacea of Druta CHatsa, Deser. degli anim. invertebr. 1. pag. 119g, 
Tav. 33, fig. 2.] 
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