serving it, I found this to be a callow nestling, and from the agonies of the poor sparrow there was no mistaking the parent; the feathers of the latter were all erect, and it continued hopping and fluttering about, and uttering the most distressing cries for the loss of one of its young, which I suppose had fallen out of the nest.—James Bladon; Pont-y-pool, September 4th, 1841.
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a. Ventral surface of the horse-leech. b. Stratum of muscular fibres running transversely; these are situated immediately underneath the cutis, c. Strata of muscular fibres running obliquely, d. Stratum of muscular fibres, running in a longitudinal direction, e. Jaw of the horse-leech, showing the fifteen teeth. f. Detached teeth of the horse-leech. g. One of the jaws of the medicinal leech, showing the teeth. h. Part of the jaws of the medicinal leech exhibiting the teeth as seen from above. i. Detached teeth of the medicinal leech. k. The upper part of the oesophagus of the horse-leech, laid open to show the longitudinal rugæ and the three cartilaginous jaws in situ. l. Alimentary canal of horse-leech. m. Alimentary canal of the medicinal leech.
The subject of the present paper is referred by Cuvier to that family of Annelides termed Abranchious, and is characterised by having
