PURPORT

For an explanation of sapta-dvipa, see Madhya-lila, Chapter Twenty, verse 218, and Srimad-Bhagavatam, Fifth Canto, Chapters Sixteen and Twenty. In the Siddhanta-siromani, Chapter One (Goladhyaya), in the Bhuvana-kosa section, the nine khandas are mentioned as follows:

aindram kaseru sakalam kila tamraparnam
anyad gabhastimad atas ca kumarikakhyam
nagam ca saumyam iha varunam antya-khandam
gandharva-samjnam iti bharata-varsa-madhye

"Within Bharata-varsa, there are nine khandas. They are known as (1) Aindra, (2) Kaseru, (3) Tamraparna, (4) Gabhastimat, (5) Kumarika, (6) Naga, (7) Saumya, (8) Varuna and (9) Gandharva."