886 DEVELOPMENT AND STRUCTURE OP PINEAL EYR IN LACERTILIA, 



Mr. Whitelegge, of the Australian Museum, has kindly given 

 me the subjoined list of thirty-five species of lizards, in which the 

 pineal eye occurs. 



1. Odataria ocellata, Gmy ; 2. ETt/drosaurus varius, Gtaj ; 3. H. 

 giganfeus, Gray ; 4. Hinulia ( Lygosoma) elegans, Gray ; 5. H. 

 grayii, Gray ; 6. H. Lahillardieri, Gray ; 7. //. ausfralis, Gray ; 

 8. H. tceniolata, ShaAv ; 9. //. Whitei, Gray; 10. H. Bichard- 

 sonti, Gmy ; 11. Afocoa Guichenoti, Gray; 12. M. Entrecasteauxii, 

 Gray; 13. Ilinulia sp. ; 14. Tetradactylus decresiensis, Peron ; 

 15. Hemiergis decresiensis, Wagler ; 16. Omolepida casuarince, 

 Dum. ; 17. Soridia lineata, Gray; 18. Trachydosaurus rugosus, 

 Gray; 19. Cyclodus gigas, Bodd. ; 20. C. occipitalis, Peters; 

 21. C Adelaidensis, Peters; 22. C. nigroluteus, Wagler; 

 23. Egernia Cunninghamii, Gray ; 24. Tropidolep isma Kingii 

 Gray; 25. T. nitida, Gray; 26. T. major. Gray; 27. Physig- 

 nathus Lesueurii, Gray ; 28. Chlamydosaurus Kingii, Gray ; 29. 

 Grammatophora cristata, Gray ; 30. G. muricata, Kaup ; 31, G. 

 reticulata. Gray ; 32. G. angulifera, Gray ; 33. G. harhata, Kaup ; 

 34. G. ornata, Gray; 35. Moloch horridus, Gray. 



EXPLANATION OF PLATES. 



List of Reference Letters. 



^. r.— Blood vessel. G.A. — Clear area. O.H. — Cerebral hemispheres. 

 Cut. — Cuticle. Ct. — Connective tissue. Ct.' — Connective tissue of retina. 

 Cl. B. — Connective tissue arranged in a band acting as a suspensory ligament 

 to pineal eye. Cut. Pig. — Pigment in cutis vera. Ep. — Epiphysis cerebri. 

 i&i)tZ.— Epidermis (rudiment of). i^,5. — Forebrain. if. B. —Mid-brain. 

 Hum. — Humour of eye and brain. Le.— Lens of pineal eye. Le. N. — 

 Lens nucleus, iV.'— Spherical nucleated bodies of retina. jV."— Spindle- 

 shaped bodies of retina. ^V."'— Triangular bodies of retina. iV.""— Deepest 

 layer of spherical bodies. 0}). L.— Optic lobe. Op. F".— Optic vesicle.— 

 Pa. F. — Parietal foramen. R. Pig.' — Pigment of retina and lens. P. Pig." 

 —Lower layer of pigment in retina. P?t. Cor.— Pineal cornea. Pr.E.— 

 Paired eyes. Pii. E. — Pineal eye. Proc. — Processes of retinal elements. 

 /?<.— Retina of pineal eye. i>\— Rods. /?. iV. — Rodnucleus. R. Mp.— 

 Rete mucosum. Srd F. —Third ventricle. Thai. — Thalamencephalon. 



