THE NERVE DISTRIBUTION IN THE EYE OF PECTEN IRRADIANS. 481 



VII. BIBLIOGRAPHY. 



CarriSre, J. 



'89. Ueber Molluskenaugen. Arch. mikr. Anat., Bd. 33, pp. 378-402, Taf. 23. 



Hensen, V. 



'65. Ueber das Auge einiger Cephalopoden. Zeit. wiss. Zool., Bd. 15, pp. 155-242, Taf. 12-21. 



Hickson, S. J. 



'80. The Eye of Pecten. Quart. Jour. Micr. Sci., vol. 20, pp. 443-445, 2 pis. 

 Hickson, S. J. 



'82. The Eye of Spondylus. Quart. Jour. Micr. Sci., vol. 22, pp. 362-364. 

 Hilger, C. 



'85. Beitrage zur Kenntnis des Gastropodenauges. Morph. Jahrb., Bd. 10, pp. 353-371, Taf. 16-17. 

 Lenhosse'k, M. v. 



'96. Histologische Untersuchungen am Sehlappen der Cephalopoden. Arch. mikr. Anat., Bd. 47, pp. 45- 

 120, Taf. 6-8. 



Patten, W. 



'86. Eyes of Molluscs and Arthropods. Mitth. Zool. Sta. Neapel, Bd. 6, pp. 542-756, Taf. 28-32. 



EXPLANATION OF PLATE XXXIV. 



arg. 



ax. bac, 



bac. 



b'pol. 



d. pig. 



cm. 



eta. 



dnd. b'pol. 



fbr. b'pol. aff. 



fbr. b'pol. eff. 



fbr. mot. 



fbr. n. 



fbr. opt. ba. 



gn.ex. 



gn. marg. 



hum. vit. 



ir. 



Argentea. 



Rod-axon. 



Rod. 



Bipolar cell. 



Epithelial pigment-cell. 



Cornea. 



Cuticula. 



Bipolar dendrites. 



Bipolar afferent fibre. 



Bipolar efferent fibre. 



Motor-fibre. 



Nerve-fibre. 



Basal optic fibre. 



External ganglionic cells. 



Marginal ganglionic cells. 



Vitreous humor. 



Iris. 



ABBREVIATIONS. 



Ins. 

 mb. a. 

 mb. m. 

 mb. p. 

 mb. sep. 

 nl.' 

 nl." 

 nl. bac. 

 nl. b'pol. 

 n. opt. ba. 

 rm. I. 

 sac. rtn. 

 scl. 

 sn. 

 sst. a. 

 sst. m. 

 tap. 



Lens. 



Anterior limiting membrane. 



Median limiting membrane. 



Posterior membrane. 



Septal membrane. 



Nucleus of supporting cell. 



Nucleus of anterior supporting cell. 



Rod nucleus. 



Bipolar nucleus. 



Basal optic nerve. 



Side branch of optic nerve. 



Retinal sac. 



Sclera. 



Sinus. 



Anterior supporting cells. 



Middle supporting cells. 



Tapetum. 



PLATE XXXIV. 



Fig. 1. A median section of the eye of Pecten irradians, schematic. The left portion of the drawing shows the 

 elements as they appear in methylen-blue preparations, the right portion as they are seen in luematoxylin 

 preparations. In the latter, the outlines and nuclei of the cells are brought to view. In the former 

 these are not seen for all of the cells, but the ganglionic cells, nerve-cells and fibres are all well shown. 

 In order not to obscure other structures only a few of the fibres from the external ganglia are drawn. 



