Plate IV. 



Eyes of Bees and their Structure. 



A, Head of Queen, magnified ten times, showing Smaller Compound Eyes at sides, 

 and three Ocelli on Vertex of Head— n, Jaw Notch. B, Head of Drone, 

 magnified ten times, showing Larger Compound Eyes at sides, with three 

 Ocelli between—?;, Jaw Notch. C, Section through Compound Eye— fi, Hairs 

 passing through Cornea ; c, Faceted Cornea ; cc, Crystalline Cone ; p, Pigment 

 Cells ; on, Optic Nerve ; g, g, Ganglia. D, Longitudinal Section of Part of Eye, 

 magnified 400 times— c, Cornea ; sen, Sub Corneal Nucleus ; cc, Crystalline Cone ; 

 gr, Great Bods. F, Cross Section through ~D—gr, Great Bod ; p, Pigment Layers. 

 G, Kacets at Edge of Compound Eye, magnified 00 times. H, Facets of 

 Central Part of Compound Eye, magnified 200 times— A, Hairs. I, Ocellus, 

 or Simple Eye — c, Cornea ; I, Lens ; hd, Hypodermis ; r, Bods ; rt, Betina ; on. 

 Optic Nerve. 



