The Cambridge natural history . Coralliophilidae. Certainly most and probably all of thesefamilies are or have been carnivorous, the Coralliophilidae beinga degraded group which have become parasitic on corals, andhave lost their teeth in consequence. The characteristics of the RADULA OF THE RACHIGLOSSA 221. ^^>^^^ group are the possession of a central tooth with from one cusp(Boreofusus) to about fourteen (B 1(11161), and a single lateral moreor less cuspidate, theouter cusp of all beinggenerally much thelargest. Thus in Melon-gena resjoertilio(Fig. 117)the central tooth is tri-cuspid, the
The Cambridge natural history . Coralliophilidae. Certainly most and probably all of thesefamilies are or have been carnivorous, the Coralliophilidae beinga degraded group which have become parasitic on corals, andhave lost their teeth in consequence. The characteristics of the RADULA OF THE RACHIGLOSSA 221. ^^>^^^ group are the possession of a central tooth with from one cusp(Boreofusus) to about fourteen (B 1(11161), and a single lateral moreor less cuspidate, theouter cusp of all beinggenerally much thelargest. Thus in Melon-gena resjoertilio(Fig. 117)the central tooth is tri-cuspid, the central cuspbeing the smallest, whilethe laterals are bicuspid ;in Bhurna japonica (Fig. 118) the central tooth is 5-cusped, the two outer cusps being muchthe smallest. The teeth, on the whole, are sharp and hooked,
Size: 1859px × 1343px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
