eye in this fish, with figures, founded upon the dissection of three specimens, and a partial examination of fourteen others. In one that measured four inches in length, the eyes were T ^ in. in their long diameter, of an oval form, and black ; and a filament of nerve was distinctly traced from the globe to the cranial walls. Examined under the microscope, with a power of about twenty diameters, Dr. W. made out satisfactorily a sclerotic, a layer of pig- ment cells that might be regarded as a choroid, and of col- orless cells to represent the retina ; and in the front part of the globe, a lenticular body, about which he thought there was a question as to whether it should be regarded as the crystalline lens, or not.
527. A blind craw-fish, from tha above locality ; about 3 in. in length. 1852. Mr. C. Kidder.
��SERIES VIII. EAR.
528. A very large model of the organ, by Auzoux, of Paris ; external and internal. 1847. Dr. 0. W. Holmes.
529. Large model, in wood, of the external ear. 1847.
Dr. 0. W. Holmes.
530. Mould, in plaster, of the external meatus, and inequalities of the external ear ; both sides. By Dr. H. 1859.
Dr. R. M. Hodges. and 309.
531. Dissection of the internal ear. From Paris. 1847.
Dr. J. C. Warren.
532. The same. 1867. Museum Fund. The same. See Nos. 79 and 472.
533-4. Temporal bone of a foetus, and of a child, cut away to show some of the internal parts. 1847.
Dr. J. C. Warren.
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