of JEclinhurgh, Sesdo7i 1883-84. 
375 
The single individual obtained here has been already described 
together with those previously dredged by the ‘‘ Porcupine ” 
{ante, p. 365). 
7. Antedon quadrata, P. H. Carpenter, 1883. 
Formula, A . 10 . ^ • 
0 
1877. Antedon celtieus, von Marenzeller, Wiener Denksclir., Bd. 
XXXV. p. 24 (separate copy). 
1881. Antedon celtica, Sladen, Mem. Arct. Echinod., p. 75. 
1881. Antedon celtica, P. H. Carpenter, Zool. Anzeig., Jahrg. iv. 
p. 520. 
Non Antedon celtieus of Barrett, Norman, Wyv. Thomson, 
&c. 
Special Marks . — The lower arm-joints (after the twelfth) as 
long or slightly longer than wide and slightly quadrate in outline, 
though som^etimes triangular. Tiiose in the middle of the arm are 
distinctly quadrate, the length bearing a large proportion to the 
breadth ; ami the later ones are somewhat elongated. But none of 
the joints are shaped like an isosceles triangle, and much shorter 
than wide. 
The third pair of pinnules (on 6 and 7 br.) are little more than half 
as long as the second pair ; and the basal joints of the lower pinnules 
have their dorsal edges more or less produced into sharp flattened 
processes. 
Pl.M.S. ‘‘Triton,” 1882. Station 4. Lat. 60° 22' 40" N. and 
60° 3P 15" N., long. 8° 2P W. and 8° 14' W. 327 to 430 fathoms. 
Stones; mud. Temp. 31°-5 to 30°. One good specimen. 
Station 6. Lat. 60° 9' N., long. 7° 16' 30" W. 466 fathoms. 
Stones. Temp. 29° ’5 F. Two mutilated individuals and one 
fragment. 
Remarks . — This species has caused me no little trouble. The 
first example of it known to science was dredged in 1872 by the 
ill-fated “Tegetthof” 5° west of Nova Zembla. It was minutely 
described by von Marenzeller"^ five years afterwards and referred to 
* “Die Coelenterateii, Ecliinodemien, mid Wiimier dci k. k. osterreidiiscli- 
uiigaiischen Nord])ol-cxpedition,” Denksch. d. Wien. Akad., Bd. xxxv. p. 25 
(of separate copy). 
