W. Lilljeborg on the Genera Liriope and Peltogaster. 61 



forming his proposed order of Cirripedia Suctoria, which he 

 considers to constitute two families : — 



Cirripedia, 



Ordo 

 Suctoria. 



Ova 

 portantur 



in tubulis 

 ramosis 

 caeciforraibus . 



1 Familia. 

 SacculinidcB. 

 Corpus subtus 



J 



Genera, 

 apertura 

 suctoria, 

 sive ore 

 prseditum Sacculina. 



in sacco sim- 

 L plici magno 



2 Familia. 



PeltogastridcB. 



Corpus 



sine aper- 

 tura suc- 

 , toria . . , Clistosaccus. 



tubulo 

 postico 

 nullo ; 

 testes duo Peltogaster. 



tubulo 

 postico 

 brevis- 

 simo ; 

 testis 

 L unus. . . . Apeltes. 



He also gives the following modified characters of the genera 

 Sacculina {Pachybdella) and Peltogaster : — 



Genus Sacculina, Thompson. 



{Pachybdella, Uiesing.) 



Animal e Crustaceorum classe et Cirripediorum subclasse, ecto- 

 parasiticum, sub abdomine Crustaceorum Decapodorum Brachy- 

 urorum degens. 



Animal adultum crassum, sacciforme, transverse ellipticum, cute 

 (pallio) Isevi, molli, sed firma, corpus internum crassum, carnosum, 

 genitalia continens et sine cavitate digestionis distincta, instar pallii 

 circumdante, vestitum. Os in organo adfigendi subinfundibuliformi 

 et corneo perforatum, et in oesophagum vel tubulum suctorium trans- 

 iens. Genitalia bisexualia. Testes duo, sacculiformes, elongati? 

 vel fortasse tubuliformes et ramosi?, in corpore interne positi. Ova- 

 ria ramosa, tubulit'ormia, in corpore interno sita. Tubuli oviferi 

 numerosi, ramosi, cseciformes, circa corpus internum ad duas mem- 

 branas tenues adfixi. Cavitas inter corpus internum et pallium per 

 foramen sat magnum, ori oppositum et plicis pallii circumdatum, 

 aperta. 



PuUus entomostraciformis, pullo Cirripediorum processibus ad 

 latera partis anterioris corporis similis, et tantum processibus pluri- 

 bus posterioribus diversus. 



Genus Peltogaster, H. Rathke. 



Animal e Crustaceorum classe et Cirripediorum subclasse, ecto- 

 parasiticum, in abdomine Crustaceorum generis Paguri degens. 



