468 Ascidiae simplices. 



Polycarpa Hkllkr. Corj^ns affixum lilcrumqne sessile, ruro iieduneulafujn^ 

 interdum arenuUs incrustafum ; testa plerumque coriacea; tentactda sim^iUcia; saccus 

 branchialis plerumcpie pilicis 4 aut paucioribus in ntroque latere; lamina clorsalis 

 maryine non clenticulato ; intestinnm laqueum amplum formans; liepar nullum; organa 

 yencratio)ti^ ^acculn^ unmcrosos in pariete intcrno pallii („poIficarpos'' ) refcrcntia. 



1. P. glomerata Heller (Ci/nthia f/Iomcrata Ald., Sf//cla f/Iomcrafa Eoule). 

 Corpus altum, cylindratum aut subglobosum, basi aftixum; pallium tenue, coria- 

 ceum, superticie laevi, interdum rugulosum, brunneo-fuscum ; orilicia carnea mar- 

 ginibus albo maculatis: oi*ilicia appropinquata, siphonibns brevibus retractilibus • 

 tentacula brevia 2.5, magnitudine triplici; areolae sacci branchialis duplo longiores 

 <iuam altiores, spiraculis longis ternis ad sena; anus margine tumido bihibiato^ 

 non denticulato. — Alt. 10 — 15, long. 4 — 5 mm. 



Distrib. : Litora Galliae et Angliae. 



Habit. : Banyuls (Lahille), Marseille, 45 — 60 m (Roule); Napoli (Heller,. 

 Traustedt); Adriu: Lesina (Heller). 



2. P. varians Heller [Cijnfhia pomaria Sav., C. fubcrosa Macgill.). Corpus 

 oblongum, subcompressum, modo liberum. modo aftixnm; pallium tenue, moHe, 

 coriaceum, rugosum, saepe incrustatum, fuscum, intus cinereo-albidum, oriticia 

 obscure carnea; oriticium branchiale anticum, cloacale medium, siphonibus brevibus, 

 dextrorsum directis, tentacula 24 — .30, alteruatim longiora; areolae brancliiales 

 Latiores quam longiores, spiraculis denis longis angustis; anus magnus, haciniatus,^ 

 cristam tuberculi instar recij^iens. — Alt. 40 — 50 inm, long. (50 — 90 mm. 



Distrib. : Atlanticum, Paciticum. 



H a b i t, : Banyuls (Lahille), litora Provinciae (Roule), Marseille, rade du 

 Prado, 30 — GO m (Mariox); Napoli (Heller. Traustedt); Adria (Heller), Lussin. 

 Cigale (Grube). 



Noni. vulg. : Galloprovincia: Vioiile dei blan (Roi-lkI. 



m 2. P. Mayeri Traust. Corpus oblongum, basi aut parte lateris affixum; 

 pallium tenue, coriaceum, rugosum aut tuberculosum, incrustatum, Itiridum; ori- 

 ticia rubra; oriticium branchiale terminale, cloacale paullo deorsum positum, siphoni- 

 bus retractilibus, divergentibus; tentacula 30; inter laminam dorsalem et primam 

 plicam branchialem unica tantum costa longitudinalis; areohie magnae plus (luam 

 duplo hitiores (juam longiores, spiraculis 7 — 8; ventricuhis horizontalis jtarvus^ 

 intestini curvatura superior fere antrorsum versa; anus parvus, margine integro: 

 organa generationis phicentiformia. — Alt. 19, long. 14 mm. 



Habit. : Napoli (Traustedt). 



m 3. P. gracilis Hklt;Er. Corpus oblongo-ovatum basi coarctata aftixum: 

 oriticia sii)honibus lirevibus, brancliiale anticum, cloacale niedium versus: i>alliniu 

 tenue, fere laeve verrucis aut granulis parvis obsitum, grisoo-album; tentacula 

 16 — 20; ventriculus transversus, striis (intus plids) longitudinalibus munitus, 

 intestinum curvum, non ad ventricuhun rediens. — Alt. 10 — 15 mm. 



Habit.: Napoli, Adria: Lesina (Heller). 



)n 4. P. sabulosa Helleh. Corpus oblongo-ovatum, supra convexum, 

 subtus aftixum; oriticia: branchiale anticum, cloacale pone niedium . haud pro- 

 minentia, nodulis 4 notata; pallium tenue, laeve aut rugulis tulierculisve parvis 

 obsitum, arenulis frustulisque incrustatum; nigrescens; tentacuhi 16 — ^20; ventri- 

 culus sacciformis, h)ngitudinaliter plicatus, antrorsum curvatus; intestinum ad 

 medium saccum branchialem ascendens , tunc ad ventriculum rediens. — Alt. 

 15 — 20 nnn. 



Habit. : Xapoli (Hki,ler). 



