  Abundances of R Coronae Borealis stars (RCBs) and Extreme Helium stars (EHes)
are discussed. Recent estimates of the $s$-process elements in hot extreme
helium stars show enhancements of lighter $s$-process elements (Y, Zr) relative
to heavier $s$-process elements, a characteristic shared by RCB stars. It also
suggests that atleast some EHe stars went through an episode of $s$-process
element synthesis in their earlier evolution. A majority of RCB stars show a
high $^{12}$C/$^{13}$C ratio in their atmospheres. A recent analysis of the
spectrum of minority RCB star V CrA, however, shows a lower value between 4 $-$
10. The implications of these results are discussed.
