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Show 374 ON THE STRUCTURE OF T H E EYE IN ARCTURUS. [May 6, during the Voyage of H.M.S. ' Challenger.'-Part I. Serolis. P.Z.S. 1884, p. 330. 2. BEDDARD, F. E.-Report on the Isopoda collected by H.M.S. 'Challenger' during the years 1H73-76.-Part I. The genus Serolis. Zool. Chall. Exp. pt. xxxiii. 3. B E D D A R D , F. E.-Report on the Isopoda collected by H.M.S. 'Challenger' during the years 1873-76.-Part II. Zool. Chall. Exp. pt. xlviii. 4. B E D D A R D , F. E . - On the Minute Structure of the Eye in the Cymothoidae. Trans. Roy. Soc. Edinb. vol. xxxiii. p. 443. 5. G R E N A C H E R , H.-Untersuchungen fiber das Sehorgan der Arthropoden. Gottingen, 1879. 6. H O E K , P. P. C.-Report on the Pycnogonida collected by H.M.S. 'Challenger'during the years 1873-76. Zool. Chall. Exp. pt. x. 7. H E N D E R S O N , J. R.-Report on the Anomura collected by H.M.S. ' Challenger ' during the years 1873-76. Zool. Chall. Exp. pt. lxix. 8. PELSENEER, P.-Report on the Anatomy of the Deep-sea Mollusca collected by H.M.S. ' Challenger'"in the years 1873-76. Zool. Chall. Exp. pt. lxxiv. 9. LANKESTER, E. R., and B O U R N E , A. G.-On the Minute Structure of the Lateral and Central Eyes of Limulus and Scorpio. Q. J. Micr. Sci. vol. xxiii. p. 177. 10. PACKARD, A. S.-The Cave Fauna of North America, with Remarks on the Anatomy of the Brain and Origin of the Blind Species. Mem. Nat. Acad. Sci. vol. iv. 11. WATASE, S.-On the Morphology of the Compound Eyes of Arthropods. Stud. Biol. Lab. Johus Hopkins Univ. vol. iv. no. 6, p. 287 et seq. 12. SMITH, S. I.-Abyssal Decapod Crustacea of the 'Albatross' Dredgings in the North Atlantic. Ann. & Mag. Nat. Hist. (5) xvii. p. 187 et seq. 13. PATTEN, W.-Studies on the Eyes of Arthropods.-I. Development of the Eyes of Vespa, &c. Journ. Morph. vol. i. no. 1. EXPLANATION OF PLATE XXXI. The following letters have the same significance in all the figures:-v., vitreous body; rh., rhabdom; r., retinula; »., nuclei of retinula-cells. The chitinous parts of the eye (vitreous body and rhabdom) are for the most part coloured yellow. Fig. 1. A number of ommatidia of Arcturus spinosus, from above. 2, 3. Cross sections at different levels through rhabdom of A. spinosus. 4. A number of ommatidia of A. furcatus, from above. 5. Longitudinal section through ommatidium of A furcatus. 6. Vitreous body and rhabdom of A. spinosus, from a teased and depigmented preparation. 7. Partially depigmented retinula oi A. furcatus. 8. Depigmented retinula of A. furcatus. 9. Transverse section of ommatidium of A. furcatus below extremity of rhabdom; one rhabdomere is seen. 10. Longitudinal section through ommatidium of A. spinosus. |