OCR Text |
Show 1897.] ON THE EYES OF THE ORDER PRIMATES. 183 No. triangularis, Wlsm 92 triatomella 290 trigonella 68 tripunctata 130 tristis, F. & R. = biferana, Wkr 159 trossulella 29 umbraticostella 257 umbratipalpis 286 undosa 240 unicolor 221 unipuncta 219 uterella 272 variolata 97 venticola 210 vicinitata, Mschl 204 vincentana, Wlsm. = transferranus, Wkr.-\- 164 No. vincentanus, Wlsm. = transferranus, Wkr.-A]- 164 virididorsana, Mschl 170 vitellus, Poey 294 [walchiana, Cram. 8c Stoll . 108] *ivalchlana, Z. = griseana, F 108 walkeri, Wlsm.=caffer, Z.. . 2 walsinghami, Mschl 299 [wceberiana, Schiff. (Enarmonia), p. 122.] xanthorrhoa, Z. = notatella, Wkr 84 xylinella, Wkr 302 * xylostella, Mschl. = cruciferarum, Z. 153 [zelleri, Wlsm. 8c Drnt 108] zingarella 70 5. Observations on the Ophthalmoscopic Appearances of the Eyes of the Order Primates. By G. L I N D S A Y JOHNSON, M.A., M.D., F.R.C.S., F.Z.S. [Received January 8, 1897.] (Plates I1.-VI.) Adopting tbe classification given in Sir W. Flower's classical on the Mammals, I include in the order Primates : Man, Monkeys, Marmosets, and the suborder Lemuroidea. I have found that a comparison of the ophthalmoscopic appearances of the fundus oculi of the various members of this most important order enables us to arrive at certain definite conclusions, which I believe to be of interest to zoologists. All the animals, including Man, were examined by me in a darkened room with tbe same amount and the same kind of illumination, and also with the same degree of magnification. Only animals in perfect health were selected, and, so far as possible, several animals of the same species were examined in order to preclude the possibility of abnormal fundi. Moreover, in all cases both eyes were examined and ascertained to be similar in all respects before a drawing was made. As a further precaution, each detail of the drawing as it was being painted by my artist, Mr. Head, was confirmed by myself in the living eye, and altered (if necessary) until it represented the original in all respects. As regards keeping the animals quiet, I found considerable difficulty at first, but as my experience increased the difficulties vanished. In no case was any drug or anaesthetic used, but in the case of a few of the wilder Monkeys a net was thrown over them. In all the other cases the animal was held gently by the keeper in his lap. The animal rarely struggled, and usually became |