ovoviviparous

from WordNet (r) 3.0 (2006)

ovoviviparous
    adj 1: producing living young from eggs that hatch within the
           body [ant: {live-bearing}, {oviparous}, {viviparous}]

from The Collaborative International Dictionary of English v.0.48

Ovoviviparous \O*vo*vi*vip"a*rous\, a. [Ovum + viviparous: cf.
   F. ovovivipare.] (Biol.)
   Oviparous, but hatching the egg while it is within the body,
   as some fishes and reptiles.
   [1913 Webster]