REPORT ON THE OPIIIUROIDEA. 



125 



o 



= 1 



•a + 



-a . 

 '3 ^ 



.3* 



o> 



\3 



[■3 



q 



-1 



'a 



Table of Species of Amphiwa — continued. 

 Three mouth papillae on each side. 



Ann spines stout, upper one thickest. Arm ) 



2£ to 4i times diameter of disk, . j 



Arm spines slender. Disk scales large and \ 



small. Six wide arms, . 

 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 Amphiura 



squamata, .... 



A notch in the outer edge of the lower 



arm plates, .... 



Upper arm plates about twice as wide as long, 

 Four arm spines, ..... 



Arms very long 

 and slender. 



Three arm spines, 



I Disk scales fine and equal, . 

 J Disk scales coarse and unecpial, 



Radial shields short 

 and separated. 



Radial 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. 



spines near edge of disk, 

 Arm spines flat and wide at the end, 

 Arm spines slender and pointed, 

 Radial shields very wide, and wholly 



Mouth papilla; wide, rather irregular. 



times four on a side, . 



° -t 





~ & °.S 



-9 -e :=! '""- 



Radial shields 

 narrow, small, and 

 joined. 



2 2 



O C3 





.5 H 



I— 1 A 



Four arm 



spines. 



Five arm 



spines. 



Radial 



wide, 



C3 ^ 



• m ■ ( Disk naked below 



■3 12 tcr: a I able, 



-2 .^ q c q 7 

 pi 3 ,3 s '8 



(ZOOL. CHALL. EXP.- 



i Disk scales above and 

 ' spicuous, . 



■part xiv.— 1882.) 



No primary plates distinguish- 

 below. Primary plates con- 



I 



Tentacle 

 A few 



joined. 

 Soine- 



( Radial shields separated within ; a few 

 J small spines on margin of disk, 

 j Edges of some of the disk scales 

 V, serrated, .... 



Radial shields very short, and partly buried in the 

 disk scales, ..... 



Radial shields more distinct than in Amphiura 

 occidi ufaiis, and disk scales larger, 



Radial shields twice as long as broad ; marginal disk 

 scales erect and pointed. Upper arm plates broken 

 in two, ...... 



j Inner mouth papilla thick ; two outer, small and 

 | sharp. Radial shields narrow and separated, 



shields half joined. Upper arm plates 



A in phi ura K'ji/aui'itu. 

 Amphiura turelli. 



Amphiura tenuispina. 



Amphiura pugi tana. 



Amphiura ciolao-a. 

 A mph in ra patagonica. 



Am phi ura microdiscus. 



A mph iura puntarence. 



Amphiura limbata. 

 Amphiura geminata. 



Amqjhiura goesi. 



Amphiura kochii. 

 Amphiura corece. 



Amphiura subtilis. 

 Amphiura gracillima. 



Amphiura riisei. 

 Amphiura grisea. 



A mph iura antarctica. 



A mph iura pi a n is} nna. 

 Amphiura barbarm. 



Amphiura atra. 



Amphiura liitkeni. 

 Amphiura urtira. 



Amphiura orcitb <tt di . 



Amphiura chilt nsis. 



Amphiura Jussa. 



Amphiura concolor. 

 Amphiura orstedii. 



Amphiura repenn. 



Amphiura pulrhdia. 

 17 



