i 
li 
lf 
I 
Puiate 10. 
Figs. 47-51. Stomias hexagonatus Garman. 
Fig. 47. The fish seen from the side. Drawing; natural size. a, ventrocaudal compound 
radiating organs; al, anterior lateral compound radiating organs; g, guttural 
compound radiating organs; L, radiating organ of the barbel; ml, medial 
lateral compound radiating organs; so, suborbital radiating organ; ve, ventro- 
medial compound radiating organs; vt, ventrothoracie compound radiating 
organs. 
Fig. 48. The fish seen from below. Drawing; natural size. a, ventrocaudal compound 
radiating organs; al, anterior lateral compound radiating organs; g, guttural 
compound radiating organs ; ml, medial lateral compound radiating organs; ve, 
ventromedial compound radiating organs; vt, ventrothoracic compound radiating 
organs. 
Fig. 49. Transverse section through the outer distal part of the eylindroconic plug-shaped 
part of a ventrothoracic compound radiating organ. Stained: haematoxylin- 
picric acid-fuchsin. Drawing; magnified 1: 280. ce, central facet of cylindro- 
conie plug; pe, transverse sections of cells in the outer facets of the cylindroconie 
plug. 
Fig. 50. Axial section transverse to the barbel through the radiating organ of the barbel. 
Stained: haematoxylin-picric acid-fuchsin. Drawing; magnified 1: 120. A, 
upper (dorsal) part of the organ; B, lower (ventral) part of the organ; b, 
blood vessel following the axial thread, and sinuous blood vessels in the lower 
chamber of the dorsal part of the organ; c, connective-tissue sheath inclosing 
the organ; ev, cavities in the upper part of the organ; p, dorsal pigment 
sheath; pe, large radial conie cells of the lower spherical part of the organ ; 
pm, pigmented membrane traversing the upper part of the organ; pt, annular 
thickening of the pigment layer; z, axial thread in the lower spherical part of 
the organ. 
Fig. 51. Axial section vertical to the medial plane of the fish through a ventrothoracic com- 
pound radiating organ. Stained: haematoxylin-picric acid-fuchsin. Drawing ; 
magnified 1: 160. d, blood vessels in the septa between the conic cells of the 
proximal spherical part of the organ; ¢, connective tissue covering the distal 
part of the organ on the outer side; cc, central facet of cylindroconie plug 
forming the distal part of the organ; co, conic proximal end of the outer plug- 
shaped part of the organ; cy, cylindroconie plug-shaped outer part of the organ ; 
p, pigment sheath; pe, longitudinally elongated cells in the outer facets of the 
plug-shaped distal part of the organ; ph, inner only slightly stainable part. of 
the radiating conic cells in the proximal spherical part of the organ; r, annular 
reflecting membrane surrounding the plug-shaped distal part of the organ; 8, 
annular cavity surrounding the plug-shaped distal part of the organ. 
