482 Ascidiae compositae. 



infundibula, brancliiale et cloacale, continens, pediculus abdoraina aninialiuni; cloacae 

 comniunes nullae; orilicia brancliiarum et cloacaruni O-dentata in superticie cla- 

 varum: in infundilnilo brancliiali corona tentaculorum tribus seriebus ordinata: 

 animalia ad 20 nim longa: branchiae seriebus 124: ventriculus ellipticus. 

 Habit.: Rovigno, frequentiss. (v. Drasche). 



?Distoma rubra Eisso. .Corpnre irveyulariter elevato, rubro violaceo: ori- 

 ficiis panlluhun distantibns, radiis (hiobus obtusis purpurascentibus.'- — Xizza 



(Risso». — An huc referenda speciesV 



Cystodytes v. Dbasche (subg-en.), Herdm. Cormits forma irrcgulari, offxus, 

 ■i)icrustaiis, intcrdunt Jotiatns ct ntoitice crassus; animalia sinffula capsutis, c Sjjicutis 

 caJcarcis disciformiljtis formatis. inclusa; saccus braitchialis parvus; ahdomcn thoraci 

 aeque magnuni. 



m 1. C. Dellechiaiae Della Valle [ApJidium Johatum D. Ch.). Cormus 

 compressus, forma irregiihiri, subcartilagineus, violaceo-fuscus , superficie laevi; 

 systemata interduni indistincta: disci calcarei diam. 0,1- — (i,2 mni; pallium viohi- 

 ceum; auimalia pallide flava ; sipliones lobis obtusis: ventriculus orbicularis, Havo- 

 rubescens, absque toris; testis foUiculis 8; ova parva, albida. 



Habit. : Napoli, frequentiss. (Della Valle). 



m 2. C. durus v. Drasche. Cormus in forma pulvini, '2(> mm attingHns, 

 plerunique spongias tegumento crasso inducens, citreus aut tiavo-fuscus, carti- 

 lagineus; SA^stemata e 10 — l(i animalibus constantia, oriticium cloacae rotundum, 

 margine elevato praeditum, circumdantia ; disci calcarei diauL 0,2 — U,(5 mni, cap- 

 sulae long. 2,5, lat. 1,5 mm; siplio cloacalis modo rectus, (J-dentatus, niodo geni- 

 culatus, capsula praeclusus; brancliiarum series 4; oesophagus sigmoideus; ventri- 

 culus fusce coloratus, hievis, testis e folliculis 8, vasi deferenti hito insidentibus 

 constans; ova magnitudine fere totius sacci branchialis; tunica abdominalis rubro 

 colorata, tliorax sordide viridis. 



Habit.: Rovigno, valde frequ. (v. Drasche). 



m 3. C. cretaceus v. Drasche. Cormus cartilagineus, 8 cm quadr. attingens, 

 crass. 3(J mm, lacteus, propter capsulas calcareas per tunicam communem ti-ans- 

 lucentes; testis folliculis 8, vasi deferenti insidentibus constans: serit^s bran- 

 chiarum 4. 



Habit.: lianyuls (Lahille); Rovigno, perrar. (,v. Drasche). 



Distaplia Della Valle. Cormus cJavae aut indumcnti carnosi fortnam 

 refercns; s>/stcnu(fa distincta, agiiregata , siniitdix Johiim formantihiis; orificium hran- 

 chiaJe 0-dcntatum , cJoacaJc Jinijua anaJi pracditum ; scries stiiimatiim I ; rcntricujus 

 Jaevis; ijenitaJia cJextra; testis raccmosus; ovarium sessde aut prduncidatum . hursii 

 iimibatoria ab atrio divergens; 2»'occsst(s ectodcrmatis, ex abcJomine animaJitim orientes; 

 larvae gemmas permagnas pyoducunt. 



m 1. D. magnilarva D. ^'. (fcJJuJupJiana piJcafa 0. Schm.). Cormus c\a- 

 vatus, chivis phuiltus liasi connnuni insidentibus; chavae coccineae brunneo-rubro 

 maculatae, peduncuh) griseo-flavido: animalia long. (> nim : tubi ectodermatici valde 

 exculti; larvae permagnae. 



Habit.: Napoli (Staz. ZooL), Secca di Bendapalumbo, 40 — 70 m, Capri, 

 Faraglioni, prope Xisita, 2-5 m (Delt,a Valle); Adria (Renieri), Rovigno 

 (v. Drasche). 



m 2. D. rosea D. V. Massae ro.seae, capitatae, pe(hui(ulatae. chwatae, 

 radici connnnni insidcntes, spongiosae; absque pigmento binnneo: aninmlia long. 

 2 mm; ovarium peduncuhitum eodem tempore evoliUum atque testis; larvae magnae. 



Habit.: Napoli (Staz. ZooL), prope ins. Capri et Nisita, rarius (Della Valle). 



