228 Gastropoda. — Gymuobrauchia. 



ex opinioue v. Iheriug varietates Polycerae quadrilineatae referunt. — ?Sicilia 



(QUATREK.\GES). 



Polycera Cuv. [Thenmto Oken). Coi-pns limaciforme, fere laeve, limbo fron- 

 tali (Itgitato; rhinophorla rix omnino retractiUa, clava perfoJiata; Jjranchia paucifoliata, 

 foliolis simpliciter pinnatis; in utroqiic laterc dorsi appendix cxtrahranchialis singula 

 diyitiformis major; tentacula hrccia lohiformia; laminae mandibtdares processu supc- 

 riore aliformi; radida angustiuscida, rhachis nuda, pleurae dentibus lateralibus majori- 

 bus inaequaUhus 2 et dcntibus externis compluribus. 



1. P. quadrilineata Cuv. {Doris quadriUneata 0. F. MtrLL. , D. cornuta 

 Abildg., D. ttdca M'i'(;., P. cornuta M. Sars, P. Uncata Kisso, P. ornata d'Orij). 

 Alba, supra seriebus longitudiiialibus tuberculorum flavorum ornata; limbus fron- 

 talis appendicibus digitiformibus 4 — 6 majoribus; branchia 7-foliata; mandibulae 

 majores, parte superiore aliformi fortiore; dentes marginales 4; penis hamulis 

 majoribus. — Long. 30 mm et ultra. 



Distrib.: Atlanticum. 



Habit. : Marseille: Pomegue (Makion); Nizza (Risso, VfiRANY); Genova- 

 (V^irany); Napoli(PANCERi, v.Ihering, Staz.Zool.); Adria: Trieste(BERGH,STossicH). 



Palio Gray. Corpus Umaciforme, fere laeve, Umbo frontaU tuberculato; rhino- 

 phoria vix omnino retractiUa, clava perfoUata; branchia paucifoliata, foUoUs bi- aut 

 tripinnatis; in utroque latere dorsi appendiccs cxtrabranchialcs minores complures; 

 tentacula brecia, Jobiformia; Jaminac mandibidares sine processu aUformi; raduJa nt 

 in PoJycera. (Subgen. PoJ//cerae Bgh. antea.) 



1. P. Lessonii Bgh. (PoJycera Lessonii d'Orb., juv. : P. citrina Ald., var.: 

 P. oceJJata A. et H., P. fusca Frey et Lkt., P. dubia Sars). Virescens aut viridi- 

 nigrescens aut olivacea, tuberculis luteis sparsis, pro magna parte seriatis; lim- 

 bus frontalis appendicibus compluvibus minoribus; branchia 5-foliata; appendices 

 dorsales plurilobatae; dentes marginales 7 — 8; penis hamulis minoribus. — Long. 

 ad 23 mm. 



D i s t r i b. : Atlanticum. 



Habit. : Adria: Trieste (v. Marenzeller). 



Euplocamus Phil. iCaJopJocamus Bgh. antea). Corpus vix deptrcssimi. ten- 

 tacula pJiciformia, apice auriculatim soJuta; rhinopJioria rctractiJia, cJava perfoJiata; 

 branchia 3 ( — 5)-foJiata; margo frontaUs ct dorsaUs appcndicibus arboresccntibus 

 ornati; os idrinque JameJJa triangida e bacuUs minutis dense confertis composita ar- 

 matum; Jingua rhachidc nuda, pJeuris dentihus JatcraJibus majoribus 2 — 3 et serie 

 dentium cxtrrnorum brcriorc (5 — fi) aut longiore (18 — 35) armatis. 



m 1. Eu. croceus Phil. (et Eu. frondosus ct ramosus Phil. , Doris fim- 

 briata D. Ch.). Color supra et hiteribus croceus, rarius aurantiacus aut roseus. 

 — Long. (1 specim. spir. vini serv.) 27 — 40 mm, lat. 9 — 15, alt. 10 — 15 mm. 



Habit. : Marseille (VAYssifcRE) ; Nizza, Genova (V^irany); Napoli (Delle 

 Chiaje, V. Ihering); Palermo (Philippi); Adria: Spalato (Cantraine). 



5. Tribus. Sacoglossa v. Iher. (AscogJussa Bgh.). 



Branchiae nuUae aut appendiccs simplices non ramosas, chivatas aut folia- 

 ceas cutis dorsalis formantes ; radula serie singula himinarum denticulatarum aut 

 edentuhirum, (luarum aiitcriores usu attritae in saccum fundo oavi oris adjacfntem 

 cadunt; systema nervosum gangliis 7 aj)positis, commissura subcerebrali cum pedali 

 conjuncta; testa nulla. 



10. Fam. ELYSIADAE Bgh. Corpus valde depressum, alis lateralibus leflexi- 

 bilibus; caput angustius, fronte sat alto; tentacula breviora plerumque marginibus- 



