Pandorina

_Pandorina_ and _Eudorina_, with sixteen cells, forming an oval or globular colony like _Volvox_, but much smaller.

Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell

Another example of conjugation is that of Pandorina, an alga allied to the well-known volvox.

Scientific American Supplement, No. 531, March 6, 1886 Various