400 Cc. O. WHITMAN. 
The so-called goblet-shaped organs of the lips differ from 
that seen in Fig. 4 only in being more strongly developed and 
in having no large clear cells around the peripheral sensory” 
Fic. 5.—Diagrammatic section of the eye of the Land Leech. c¢. Cuticle. 
ep. Epidermic cells. ge. Gland-cells of the epidermic layer. gy. Nerve- 
ganglion cells. d@. Pigment. 2. Nerve-fibres. y. Large clear cells. 
a. Nuclei of the same. &. Refringent substance of the same. 
cells. I have found, however, some of these peculiar cells 
along the nerve-branches running to these organs. 
With respect to the structure of the eye and the morpho- 
logical significance of the elements composing it, my studies 
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