EEPORT ON THE OPHIUROIDEA. 



125 



o 



-^ A 





g s 



o '-' 



Table of Species of Amphiura — continued. 

 Tliree mouth papillae on each side. 



Arm spines stout, upper one thickest. Arm \ 



2^ to 4i times diameter of disk, . | 



Arm spines slender. Disk scales large and \ 



small. Six Avide arms, . . . j 



Arm spines slender. Disk scales coarser 



than in Amphiura squamata; upper arm 



plates longer, 

 Arms about eight times the diameter of the 



disk, .... 

 Disk scales coarser, and of more varied size 



than in Amphiura squamata, 

 Upper arm plates wider than in AmqMnra 



squamata, 

 A notch in the outer edge of the lowe 



arm plates. 



Upper arm plates about twice as wide as long, 

 Four arm spines, .... 



m J 



■ tc 



'.a i 



Arms very long 

 and slender. 



> Three 



arm spines. 



I Disk scales fine and equal, . 

 J Disk scales coarse and unequal, 



Kadial shields short 

 and separated. 



Eadial shields ) Three arm spines, 

 long and narrow, j Four or five arm spines, . 



Scales and plates thick and distinct. 



scales large, . 

 Primary plates of disk conspicuous, 



sinncs near edge of disk. 

 Arm spines flat and wide at the end. 

 Arm spines slender and pointed, 

 Eadial shields very wide, and wholly joined. 



Mouth papilla; -svide, rather irregular. Some 



times four on a side, . 







o . 



tM O 



O " 



o 





tj -e 1=1 '^ 



Tentacle 



A few 



Eadial shields 

 narrow, small, and 

 joined. 



^3 



.3 ^ 



^ Eadial shields separated within ; a few 

 1 small spines on margin of disk, 

 ] Edges of some of the disk scales 

 V serrated, .... 



Eadial shields very short, and partly buried in the 

 disk scales, ..... 



Eadial shields more distinct than in Amqihinra 

 (iccidf'ntalis, and disk scales larger, 



Eadial shields twice as long as broad ; marginal disk 

 scales erect and pointed. Upper arm plates broken 

 in two, ...... 



{ Inner mouth papilla thick ; two outer, small and 

 ( sharp. Eadial shields narrow and separated, 



f Eadial shields half joined. Upper arm plates 

 I wide, ...... 



Four arm 

 spines. 



Five arm 

 spines. 



^ . ( Disk naked below. 





o d p! 



) able, 

 'i Disk scales above and below. 



\ spicuous, . 



(ZOOL. CH.\LL. EXP. PART XIV. — 1882. 



'No primary plates distinguish- 

 Primary plates con- 



Amphiura squamata. 

 Avijihiura torelli. 



Amjjliiura tenuispina. 



Amphiura qnigefana. 



Amphiura violacea. 

 Amphiura patagonica. 



Amphiura microdiscus. 



A mph iura pmntarerKB. 



Ampihiura limhata. 

 Amphiura geminata. 



Amphiura goesi. 



Amphiura kochii. 

 Amphiura corece. 



Amphiura suhtilis. 

 Amphiura gracillima. 



Ampihiura riisei. 

 Amphiura grisea. 



Amphiura antarctica, 



Ampihiura planispina. 

 A mpihiura harbane. 



Amphiura utra. 



Amphiura liitkeni. 

 Amphiura urtica. 



Amphiura occidentalis. 



Amphiura chilcmais. 



Ampihiura fissa. 



Ampihiwra concolor. 



A mpih iura iirstedii. 



Amphiura repenn. 

 Amphiura jndchella. 

 O 17 



