1. The third division is _rhythmica_, having to do with strings and
instruments that are beaten, to which are assigned the different
species of cithara, the drum, and the cymbal, the sistrum, acitabula
of bronze and silver, and others of metallic stiffness that when
struck return a pleasant tinkling sound, and the rest of this
sort.[262]
[262] Other instruments mentioned are _psalterum_, _lyra_,
_barbitos_, _phoenix_, _pectis_, _indica_, _aliae quadrata forma
vel trigonali_, _margaritum_, _ballematica_, _tintinnabulum_,
_symphonia_.
2. The form of the cithara in the beginning is said to have been like
the human breast, because as the voice was uttered from the breast so
was music from the cithara, and it was so-called for the same reason.
For _pectus_ is in the Doric language called κίθαρα.