2/O EFFA FUNK MUHSE. 



EXPLANATION UF FIGURES. 



Figs. I and 2 are from entire specimens. All figures except I and 2 are from 

 sections. Figs. 7 and 8 are diagrams. 



EXPLANATION OF NOTATIONS USED. 



b. Brille. l v Second labial scale. 



ch. Choroid. l y Third " " . 



ci.p. Ciliary processes. I.e. Lens capsule. 



cj. Conjunctiva. m.m. Middle member of cone. 



fj.s. Conjunctival sac. n.s. Nasal scale. 



cor. Cornea. o.c. Ocular scale. 



cov. Coverings of eye. /./. Pigment layer. 



d. Dermis. po.s. Preocular scale. 



e.m. End member of cone. r. Retina. 



F.cj. Fornix conjunctiva. ro. Rostral. 



H g. Harder' s gland. r.m. Roof of mouth. 



i. Iris. s. Sclera. 



i.e. Interpolated cells. s.e.l. Sensory epithelium layer. 



/. Lens. rit.cav. Vitreous cavity. 



/j. First labial scale. 



1. Pigment layer. 6. Inner nuclear layer. 



2. Cones. 8. Inner reticular layer. 



3. Outer nuclear layer. 9. Ganglion cell layer. 



4. Outer reticular layer. 10. Fiber layer. 



FIG. I. Dorsal view of head of a specimen 21 cm. long. 



FIG. 2. Lateral view of head of same specimen. 



FIG. 3. Horizontal section of a specimen 20 cm. long, ^-objective, 2-inch eye 

 piece, camera lucida. 



FIG. 4. Transverse section of a specimen 21 cm. long, ^-objective, 2-inch eye 

 piece, camera lucida. (Scales not shown.) 



FIG. 5. Section of retina of an adult specimen 21 cm. long, ^-objective, l-inch 

 eye piece, camera lucida. 



FIG. 6. Section of retina of young specimen, 10 cm. long, ^-objective, l-inch 

 eye piece, camera lucida. 



FIG. 7. Diagrams of eye of adult. 



FIG. 8. Diagram of eye of young. 



(The region x-r\\\ the sections could not be made out and is consequently left 

 blank in the diagram. ) 



