482 ENCRINUS, ESOX. 
in the mid@le of the base; branches cylindric, 
with rings. Common petrifaction. 
See MS. P. 
8—S8. FEpruremera. Spec. 21. 
vulgata, (ephemera, day-fly,) wings reticulate, 
spotted with brown 3 body yellowish, spotted 
with black ; having three threads at the end of 
the abdomen. Species communis of some au- 
thors. It appears by millions, ascending and 
descending, for a few days. 
See MS. P. 
4—3. Eaves. Spec. 2. 
- americanus, rays of the first dorsal-fin elongated ; 
teeth smooth ; the floating vesicles large. 
See MS. P. 
1—-6. Equus. Spec. 6, 
caballus, (horse,) hoofs solid ; mane and tail with 
long flowing bair. 
hemionus, (wild mule.) hoofs solid; colour uni- 
form, no cross on the back; tail hairy at the 
tip only. 
asinus, (the jack.) hoof solid; tail bristly at the 
extremity; a black cross on the shoulder of the 
male. 
See MS. P. 
1—3. Erinaceus. Spec. 6. 
europeus, (hedgehog, ears rounded ; nostrils with 
a loose flap. About ten inches long. 
See MS. P. 
4—4, Esox. Spec. 15. 
osseus, (bill-fish, sea-pike,) upper jaw longer : 
scales bony ; tail quadrangular. 
