Polycliuidae. — Didenmidae. 487 



)ii 3. D. inarmatum v. Dra:s(he. Cormus caruosus, pulvinos ad 1 cm 

 crassos formans, flavus, maculis nigro-brunneis dilutis; cloacae amplae, rimarum 

 formam praebentes; S3'steraata irregularia ; spicula nulla; oriticium brancluale 

 (i-deutatum, (5 maculis nigris praeditum; oriricium cloacale infuudibulum longum 

 nmsculosum formans; saccus branchialis pigmento nigro notatus; testis et ova citrea. 



Habit.: Adria : Rovigno. perrar. (v. Duasche). 



II) 4. D. bicolor v. Dkasche. Cormus crustas 1;") mm crassas in conchis 

 Arcae formans; systemata irregularia ; coh)r griseo-viridis ad nigro-viridem, cellulis 

 ectodermatis inlmerens; superticies aliquantum tuberosa; spicula calcarea 1 mm 

 a superficie distant; animalia singuhi iu lineas nmltifariam decussantes ordinata; 

 (iriticium branchiale 6-dentatum, nigro-viride , chiacale infundibuhun breve valde 

 deorsum positum formans. 



Habit. : Adria: Eovigno, perrar. (v. Drasche). 



1)1 5. D. Grubei v. Drasche {LcptocUnum Listerianum Grube). Crusta, 



irassit. ad ;"> mm, pallide grisea maculis nigricantibus marmorata. stromate sub- 



gelatinoso-carnoso , globulis calcareis stellatis perraagnis dense repleto; infundi- 



[ buhun branchiale latum, breve, dentibus (5 vahle obtusis praeditum, infundibulum 



cloacale muscuhisura. 



Habit.: Adria: ad ins. Lussin (Grube). 



m 6. D. variolosum Gkube. ..Dyctyomenias et Serpuh^rum tubos ob- 

 ducens, laeve, stromate gelatinoso-carneo ex griseo pallide brunneo, glomerulis cal- 

 careis repleto, sulcis ttexuosis liuearibus rainus incisis areolato; orilicia branchialia 

 tuniidula, alba, plerunique ovalia, raro distincte stelliformia, lobulis teneris, sulcos 

 ^tromatis sequentia aut in areolis ipsis quoque sita. " 



Habit.: Adria: Lussin piccolo, 17 org. (Grube). — An huc spectat Apli- 



[ dimn lohatinn Risso (nec Sav.)? (v. supra p. 483). 



?Didemnum album (Sav.) D. Ch. ..Massa caudida, ascidiis (ire 4-deutato.- 

 — Napoli (Delle Chl^jei. 



Didemnum faltfex Lah.. species iiou de.scripta; Bauyuls (Lahille). 



Didemnoides v. I>rasche. Cormub canwsus, pulvi)ws aut tuhera formans; 

 s-'ries quatuor stig))iatum. 



1. D. macroophorum v. Drasche (?lJidem)iu)n )-uheUum Grube). Tubera 

 magnitudine nucis avelhmae formans aut Xulliporas induens; color vini rubri 

 pellucens , maculis albidis viohaceisque (in spiritu vini albus , opacus), superticies 

 in areas polygonales divisa , in quarum margine oriticia brancliialia (i-dentata ; 

 cloacae magnae, rarae, margine elevato, saepe albodentato, lingua anali munitae; 

 <iva maxima, teste quadruphi aut quintuplo niajora. 

 Distrib.: Ad insulas Chauzey, S. Malo. 



Habit. : Adria: Trieste, Neresine, Lussin grande, 35 — 37 org. (Grube); 

 Rovigno (v. Drasche). 



D. rubellum Grube. rulvinaria vel glomera minus crassa, interdnm i)iri- 



fonnia, algas (il)ducentia, ex rubelh) vel carned punicea, stromate molli snbliyalino 



carnoso-gciatinoso, globulis calcareis imdi(|ue cuspidatis variae magnitudinis re- 



pleto, inde albo punctato. ai)orturis branchialibus distincte stelliforniibus, ri-loliis, 



aroa peUucidiijre ciicunidatis, lobis albo Hmbatis." (CtKube). 



))i 2. D. resinaceum v. Drasche. Lulumenta carnosa iu testis Gastro- 



^ podum, ad crass. 7 mm; coh)r flavus, fuscus aut fulvus resiuaceo nitens; syste- 



' mata irreguhiria, ad venarum instar notata; spicula rara; oriticiuni ch^acale simplex. 



Habit. : Adria: Roviguo, frequ. (v. Drasche). 



Leptoclinum H. M. Edw. (Tetradidanuum Della Valle). Cormus durus, 

 ^j^ilrtdi.^i ailcarcis confoiis fuUus, trnuis, trustas fo)))ians, )arius oassus; cloacae 



