192 -D. Echinoderniata. 



eine kurze Zusainmenstellung des Wenigen, was bis jetzt liber fossile Ophiuren 

 bekannt geworden ist. 



Greeff ( 36 ) beschreibt von den Inseln Sao Thome und Rolas Opkwderma gui- 

 neense n. sp. 



Verrill ( S3 ) besclireibt von Neu-England Amphiura macilenta n. sp. (68 Faden), 

 Ophioglypha aurantiaca n. sp. (192310 Fd.), signata n. sp. (= af finis Verr.). 



Ludwig ( 51 ) beschreibt von Brasilien Ophiotkrichoides n. gen. (1 n. sp.) und 

 Ophiothrix Rathbuni n. 



Der Bericht Studer's ( 78 ) fiber dieReise der Gazelle bezieht sich auf 58 Arten, 

 darunter 5 neue ; diese und 5 friiher (Antarctische Echinod. , Berliner Monats- 

 berichte 1876) schon vom Verf. kurz characterisirte Arten werden beschrieben 

 und abgebildet. Die 58 Arten, derenFundorte angegeben werden, sind: Ophio- 

 dermatidae: Ophiopeza fallax Pet. , Pectinura semicincta n. sp.; Ophiolepi- 

 didae: OpMogona laevigata Stud., Ophiolepis a/finis n. sp., cincta M. Tr., Ophio- 

 plocus imbricatus M. Tr., Ophiopyrgus saccharatus n.sp., Ophioglypha stellata n.sp., 

 ambigua Lym., brevispina Sm., hexactis Sm., costata Lym., verrucosa Stud., cari- 

 na ta Stud., Ophiocten amitimtm'Lym. ; Amphiuridae : Ophiactis incisa v.Mart., 

 sexradia Grube, cuspidata Lym., flexuosa Lym., asperula Ltk., Amphiura Eugeniae 

 Ljgm., Studeri Lym., tomentosa Lym., modesta n. sp., congensis n. sp., Ophiocnida 

 pilosa Lym., Ophionereis porrecta Lym. ; Ophiocomidae: Ophiocoma scolopen- 

 drina M. Tr., erinaceus M. Tr., ternispina v. Mart., pica M. Tr. (lineolata M. Tr.), 

 Ophiartrum pictum Lym., elcgansPet., Ophiomastix annulosa M. Tr., JlaccidaM.. 

 Tr. ; Ophiacanthidae : Ophiochiton Lymani n. sp., Ophiacantha vepratical^ym. , 

 vivipara Ljgm. , stinudea Lym. , Ophiothamnus remotus Lym. , gracilis n. sp. ; 

 Ophiothrichidae: Ophiothrix rubra Ljgm., Petersi n. sp., longipeda M. Tr., 

 punctolimbata v. Mart., triloba v. Mart., nereidinaM.. Tr., Martensi I^ym., tri- 

 lineata Ltk., purpurea v. Mart., aristulata Lym.?, plana Lym., smaragdina n. sp., 

 Ophiogymna elcgans Ljgm. ; Ophiomyxidae: Ophioscolex prolifer n . sp . , Ophio- 

 myxa brevispina v. Mart., flaccida Ltk., vivipara Stud. Von allgemeinerem Inter- 

 esse sind die Bemerkungen ttber den embryonalen Character des Skeletes von 

 Ophiopyrgus und die Beschreibung der Bruttaschen von Ophioglypha hexactis. 



Verrill ( M ) beobachtete, daC Amphiura abdita Verr. die mitsammt den Einge- 

 weiden entfernte Ruckenhaut der Scheibe zu regeneriren vermag, und vermuthet, 

 dafi die von ihm neu aufgestellte Art macilenta die Jugendform der abdita sei. 



Ophiernus n. g. wCentral portion of disk inside radial shields covered by a thick 

 skin ; round the margin a broad band of scaling, interrupted only by radial shields, 

 and covering also the lower interbrachial space, the whole more or less hidden by 

 the skin. Radial shields naked. Teeth , and small, numerous, close-set mouth- 

 papillae. First under arm- plate rather large and bearing some of the scales of 

 the second pair of mouth-tentacles. Upper arm-plates covering the whole width 

 of arm. Small smooth arm-spines, arranged along outer edge of side arm-plate. 

 Two large, long genital openings in each interbrachial space. Lyman ( 53 ) . 



Ophiobyrsa n. g. Entire animal clothed in a thick skin , which hides the under- 

 lying plates and is beset on the disk with spines. Arm nearly cylindrical. Side 

 arm-plates projecting as short flap-like, spine ridges, which bear slightly rough 

 spines on their outer edge. Tentacles large and simple. Few or no mouth-papil- 

 lae, but at apex of mouth-angle the teeth and tooth-papillae are represented by 

 a clump of little spines. Two large genital in each interbrachial space. Lyman ( 53 ). 



Ophiocamax n. g. Disk beset with thorny spines or stumps, and covered by scales 

 or irregular plates and large radial shields. Besides teeth, there are tooth-papillae 

 and mouth-papillae , numerous , and all of the same spine-shape ; they are ar- 



