

.\r.\i.r.rn.v:. 



backwards ; branch!* very anomalous, and onmposed at a great number 

 of direnaform drrhon* productions ; otgaiw of^neration terminating 

 at UM anterior third of the right side by two closely approximated 



Example, Pkytalin Arttkiua. 



Thin to the XrWAwa of Browne ; Afaiiw* Cararella at Miiller and 

 KnhMttolts ; /'**/ PJagiau of Umarolt ; the Portuguese Maa-of- 

 War of English voysgvn. Thk Pkgnln an inhabitant of the warm 

 MM. bat a iihoal of them are sometimes driven into oar bays, 

 particularly on the south-wot coast 



lia Pelayietn the crcut not cxpandrd. 



Locomotive organs complex and vesicular. 



2. Phyttophora. 



Generic Ckaratter. Body more or less elongated, cylindroid, 

 hydatiform in its anterior part, provided below with two scried of 

 vesicular divendfonn bodies, with a regular a|>erture, and behind with 

 variable number of very diverse cirrhiform productions, two of 

 which are longer and more complex than others; mouth at the 

 extremity of the hydatiform part ; anus terminal. 



Example, Phyuophora Miuonema. 



M. de Hlainville states that the Phyttophora differ from the Pliytaliic 

 in swimming or floating in a vertical position, tin- air-bag being 

 above and the cirrhiferous productions below. The distinction of the 

 species appears to him to depend especially on the number and form 

 of the natatory organs. 



8. 



(lrn*ric Ckaraettr.'RnAy cylindrical, elongated, contractile, mus- 

 cular, composed of three parts, the anterior part vesicular, the mi. 1.11. 

 part bearing on ite lower part two hollow natatory organs, placed one 

 before the other, and the third part (which is the longest) provided 

 above with a flbriUo-capulaceous plate, and below with cirrhiform 

 productions ; mouth terminal 



Example, Dipkyta. tngvlarit (Quoy and Qaimard ; 'Astrolabe, 

 Zoologie 1 ). 



4. I;ki;o,,hyM. 



Generic Clkaracttr. Body free, transparent, very contractile, very 

 much elongated, swollen at one extremity into a sort of acrifi-nui* 

 bladder with a terminal orifice, provided throughout it* length with 

 scattered tentaciiliform pnul ;. .1 witli cirrhifurm nlamcnto. 



This genus is divided by M. de BUiuvUle into two sections. 



a. 



flpcciai with simple tentaciiliform production*. Natatory Organ* 

 hollow. (Genus Rhimphyta.) 



Example, Kkizopttyta ptowMtonui, 



Ksch., ' Acaleph.,' p. 148, K.i. JL, fc 18, 



Peroo. (KAitojAyn J'inmti, 

 JL, fc 18,^. 8.) 



0. 



Species whose taotaculiform productions are covered with cirrhiform 

 filament* Natatory organs unknown. (Genus Bp&mlia, Ksch.) 

 Kxmp\e,KMuopkyiafUiformu. (Phyaopkora JUiformit, Forsk.) 



1. llhizophyia filiformli ; 2. riiyaaphara Jftizoncma. 



* 



Species provided with two aorta of locomotive organs, the ant< rinr 

 ones hollow, the posterior solid. 



6. Apolemin. 



Generic Character. Body very much elongated, cylindrical, vermi- 

 form, provided anteriorly with many hollow nntiit m two 

 PIW-, and lifhind witli solid Hqunmous organs, l.ftwi'i-n \\lii.l. 

 I'oitli tentaculifonn cirrlii, friiinhe<l with vermiform suckers. 

 Example, Apol'mia Crania. 



6. Stephanomia, 



i'c Character, Body In general very Hindi clotipitfil, cylin- 

 drical, vermifonn, covered throughout its ext. - n tin- IOWIT 

 median line, with squamous natatory orgoiui, full mnl d 

 transverse bands, between which come forth, nnd e]><'< i.'illy inf.-riorly, 

 long, very mnch diversified cirrhiform productions, minglfl witli tin- 

 ovaries. Orifices of the intestinal canal terminal 



Example, Strpkanomia Amphitrida, IVrcni .t I.esucur ('Voyage 

 aux Terres Austr.,' p. 45, pi. 29, fig. 5). 



7. Protomedea, 



Generic Charatter. Body free, floating, cylindrical, fistuloiw, very 

 long, provided above with an imbricated assemblage of gelatinous 



