Ophioderniatidae. — Amphiuridae. 93 



Habit.: Alger, bains de l"Agha. 15 — 20 m (Makion); Marseille (Makion); 

 Messina, Napoli (Sars); Adria: Trieste (Sars, Grube, (tkaeffe), Quarnero (Lokenz), 

 Neresine, Lussin grande, Portore, Clierso (Grube), Lissa, Lesina (^Heller). Mare 

 Aegeum, rara (E. Forbes). 



2. 0. albida Lym. {Ophiura alhhla Forb., OpJnolc^iis ciJiafa M. et Tr. p., 

 Ophiolejjis stcntira Lor.\ Squamae pectinatae ad brachiorum orginem 16-deiitatae; 

 scuta oralia scutata, radiis convexis; squamae superiores triaugulares, laterales 

 4 — 5-spiniferae : in medio disci squamula major, squanmlis 5 circumdata. 



Distrib.: Inde a Mari Baltico ad Fiiroer et insulas Azores. 



Habit. : Napoli (Sars); Capri (GrAsco); Adria: Trieste (Sars, Gtraeffe), 

 Quarnero (Lorenz, Gtrube), Cigale, Lussin grande (Grube), Lissa, Lesina, Ragusa 

 (Heller»; Mave Aegeum inter Cerigo et Ehodos (E. Forbes). • 5 — 250 org. 



3. 0. affinis Lym. {Ophiura affinis Ltkn., 0. Crrubii Hell., Ophiofilypha 

 Grnbei Hell.). Discus crassus, brachia tenuia, scuta oralia scutiformia longiora 

 quam latiora, distantiam a margine disci fere aequantia; discus squamis minutis et 

 majoribus in formam rosae positis tectus; papillae ad latera incisurae breves 

 «irciter 9, ambulacrales singulae; spinae scutella brachialia fere aequantia ; pori 

 infrabrachiales nulli; scutella ventralia minuta sejuncta. 



Distrib. : Litora occidentalia Scandinaviae, Angiiae. 



Habit. : Adria : Muggia (v. Marenz.), Lesina, Ragusa (Heller). 10 — 65 org. 



Ophiocten Ltkn. Discus crassus, drbicularis, sine incisuris ad brachia, 

 inter sipiamas et scnta radialia (jramdis auf squamidis tectus, infra in spatiis inter- 

 braehicdibus squamosus sine granulis; series papillarnm ad rimas genitales supra braehia 

 producta; margo disci supra scuta brachialia dorsaUa (primum aut duo) hasalia arcuafo- 

 truncatus; scufa latcralia infra se tangentia; papillae orales, nec dentales. 



m 1. 0. abyssicolum Ltkn. {Ophiura abijssicola E. Forb. , Ophioglgpha 

 abf/ssicola Ljungji.). Squamae pectinatae ad brachiorum originem binae 5 — 9-den- 

 tatae; scuta oralia pentagona, radiis carinatis; scutella superiora brachiorum 

 quadrata, lateralia 3 — 4 spinifera. 



Habit. : Mare Aegeum (E. Forbes). 150 — 200 org. 



3. Fam. AMPHIURIDAE Ljungm. Ophiuridae echinatae, spinis brachia- 

 libus divaricatis glabris aut scabris, carinis scutellorum lateralium insertis, horridae; 

 discus rarissime cute molli tectus; squamae disci aut uudae aut granulis aut spinis 

 tectae; scuta oralia iiuda; papillae orales 1 — 3 — 5. 



1 . Subfam. Ophiacanthinae L jungm. Discus moUis (nudus) , granulatus 

 aut asper, spinae laterales 4 — 9; papillarum oralium paria pluria quam 3, saepe 

 infradentalis impar. 



Ophiacantha M. et Tr. Discus auf totus aut in costis radialihus solis 

 granulis aut bacillis brevibus asperis obsifus; spinae laferales 6 — 9, asperae, haud vero 

 serrulatae, in basi brachiorum in dorso sese fere tangentes; iMpHlae orales 4 — 5, 

 praeter infradenfcdcm imparem, ambufacrcdis unica. 



m 1. 0. setosa M. et Tr. {Asterias setosa Retz., Opjhiura rosularia Grube). 

 Discus nudus, in dorso 10 striae granulorum aut bacilloruin, medium non attiu- 

 gentes; scuta oralia fere duplo latiora quam longiora, angulis lateralibus acutis; 

 papillae orales longae, conicae, acutae, utrinque 3 — 4. 



Habit. : Oran, Alger (CoII. Paris.); Sicilia (Mus. Lund.), Palermo (Grube); 

 Napoli (Ludwig). 



m 2. 0. scabra Sars. 0. setosae simillima, sed disco supra undique tuber- 

 culis minimis rudibus irregulariter sparsis et promineutiis majoribus scabris ad 

 marginem super basin brachiorum obsito. 



