OSTREA, OVIS. 229 
i4 rounded and longitudinally striate rays. 5 
inches long. 
jacobea, having 14 angular rays. 
Section B. Rough, and generally plaited on the 
outside. "The proper Oyster. 
edulis, (common oyster,) shell suborbicular, rug- 
ged, with undulate imbricate scales 5; one valve 
flat, entire. Extremely variable in form, size — 
and colour. 
plieatula, (fan-sheil oyster,) shell with longitudi- 
nal wrinkled plaits: the lower valve a little 
jess and flatter. Generally cinereous with a 
mixture of violet, sometimes bluish-white. 
See MS. P. 
2—5. Oris. Spec. 11. 
torda, (bustard,) wave-spotted with black and ru- 
fous, whitish beneath ; head (of the male) and 
throat each side crested. 4 feet long. 
See MS. P. 
1—7. Ovis. Spec. 4. 
aries, (sheep,) horns compressed, lunate. 
See MS. P. 
Varieties. 
Hornless. Horns none or mere rudiments ; tail 
reaching as low as the knees. 
Black-face. Horned ; tail short, wool short and 
coarse. 
Merino. Horns spiral and extended outwards ; 
wool fine and plentiful. This variety secretes 
so much oily matter upon the wool that much 
dust adheres to it. 
See MS. P. 
20 
