dee 
13. 
14 
17. 
_ 
oo 
Puate 45. 
1-19. Phormosoma hispidum A. Ag. 
Auricles of odd anterior ambulacrum of young specimen 15 mm. in diameter; same 
‘ > f j 
as Pl. 44, fig. 1. 
Looking towards the actinostome through the auricles of the left posterior ambulacrum 
of specimen measuring 43 min. in diameter; the same as Pl. 44, fig. 2 
Looking towards the actinostome through the auricles of the left posterior ambulacrum 
co} fo) 
of specimen 64 mm. in diameter, the same as Pl. 44, fig. 3. 
A corresponding view of the auricles of the right posterior ambulacrum of a specimen 
137 mm. in diameter; the same as Pl. 44, fig. 4. 
The same view of the auricles of a specimen 203 mm. in diameter (Pl. 41, fig. 2). 
Actinal plates of the right posterior ambulacrum of a specimen 53 mm. in diameter, 
seen from the exterior; Station 3400. 
Interior view of the auricle and actinal plates of the left anterior ambulacrum of spéci- 
men 64 mm. in diameter; same as PI. 45, fig. 3. 
Actinal plates of the left anterior ambulacrum of specimen 1387 mm. in diameter ; the 
same as Pl. 45, fig. 4, seen from the exterior; Station 3392. 
The same as fig. 8, seen from the interior. 
Plates of the actinostome of the odd anterior ambulacrum of the same specimen. 
First buccal plate in odd ambulacrum; one figure is seen in profile, the other is the 
same plate from the inside. 
Outside view of first buccal plate of the left anterior ambulacrum. 
Part of right posterior ambulacrum and adjoining interambulacrum from the 7th 
plate from the actinostome of specimen 203 mm, in diameter, seen from the 
exterior. 
The same as fig. 13, seen from the interior of the test. 
Primary abactinal tubercles with miliaries and secondaries of the odd interambu- 
lacrum. 
Primary spine of an interambulacral area on the actinal side. 
Another smaller primary spine. 
The same spine as fig. 17, seen from the opposite side. 
Base of same spine as fig. 16. 
