"Transverse section of the arm of a Starfish near the disc. Diagrammatic. Lettering as in preceding figure. a.r., ambulacral rafter (ossicle); ov., ovary, containing ova." -Galloway, 1915

Starfish Arm Section

"Transverse section of the arm of a Starfish near the disc. Diagrammatic. Lettering as in preceding…