120 



THE VOYAGE OF H.M.S. CHALLENGER. 



Table of Species of Amphiura — continued. 



No tentacle Disk with minute scales hidden hy the skin ; middle spine 



scale. 



( Disk wi 

 ( widen 



o 



H 





o ^3 » 





widened at its end, 



Four mouth papillae on each side. 



Eadial shields \ Upper disk scales coarse, with primary plates con- 

 long, narrow, > spicuous, ..... 

 and joined. J Upper disk scales thin, fine, and equal. Disk flat, 



Mouth shield long and narrow. Disk scales thick and 

 irregular, without conspicuous primary plates, 



Mouth shield long heart-shaped. Upper disk scales large 

 with conspicuous primary plates, . 



Upper arm spine flat and hroad at the end, 



Disk scales above and below regular and equal, with a double 

 marginal border. Upper arm plates with a slight depres 

 sion, ....... 



W |_ Mouth shields wider than long. Side mouth shields broad, 



p •,.,,. ,, t Outer mouth papilla standing on outer corner of 



, j b side mouth shield, and separated from the other 



separated. j ., * 



Four arm f First under arm plate large and usually cut transversely in 



spines. ( two, 

 Five or six 

 arm spines. 



Three arm 



spines, middle 



one swelled. 



> Eadial shields small and separated within, 



£* 



Four arm 

 [ spines. 



Jj ( Four arm 

 g ( spines. 



t Disk scales fine; only central primary plate conspicuous 

 ) First under arm plate small, 



j Disk scales coarse ; all primary plates conspicuous. 

 ' First under arm plate wide and large, 



j Disk naked below. Tentacle scale minute and like a lip. 

 ( Eadial shields long and narrow, and diverging inward 



Disk scaled on both sides. Eadial shields large, wide, 

 and joined for half their length. Primary plates 

 conspicuous, ...... 



<s . 



-^ m 



a o 

 o 



O <G 



Eh 



Five mouth papillae on each side. 



Mouth papillre similar to Amphiura duplicata. Eadial shields narrow 

 and joined, ........ 



Three middle mouth papilla? longest. Point of mouth angle occupied 

 by lowest tooth, ...... 



Disk puffed, with minute crowded scales, and long, narrow, separated 

 radial shields, ....... 



Amphiura securigt ra. 



Amphiura 

 Amphiura 



Amphiura 



Amphiura 



Amphiura 



Amphiura 

 Amphiura 



Amphiura 



wipressa. 

 laivis. 



depressa. 



hatstata. 



Integra. 



andreai. 

 gibbosa. 



abdita. 



Amphiura duplicata. 

 Amphiura lobata. 

 Amphiura, dalea. 

 Amphiura eemua. 



Amphiura glauca. 

 Amphiura veirilli. 



Amphiura cuneata. 

 Amphiura canescens. 



Amphiura tumida. 



One tentacle f Mouth papilla?, squarish and crowded. Side mouth shields ) Amvhiura vatula 

 scale. ( large and wide. Disk scales irregular, small and crowded, . J ^ 



Note. — Mr. F. "W. Hutton has described Amphiura parva (Proc. New Zealand Institute, vol. xi. p. 305). 

 As I have never been fortunate enough to understand any of Mr. Hutton's descriptions of Ophiurans, I should 

 not, perhaps, have been able to place this species in the table, had I seen its diagnosis. 



Amphiura maxima, Lym. (PI. XVIII. figs. 7-9.) 



Amphiura maxima, Lym., Bull. Mus. Comp. ZooL, vol. vi., part 2, p. 19, pi. xi. figs. 278-281. 



Disk covered on both sides with swollen, lumpy, irregular scales ; ten stout, sharp 

 arm spines. Outer mouth papillse wide and scale like. Two very large tentacle scales, 

 one overlapping the other. 



