. Quarterly journal of microscopical science. smicrops, A. M. E. et Bouv., has degenerate eyes. The sub-family Munidopsina) (five genera and manyspecies) is characterised in distinction from the Galatheiua)by the reduced eyes.^ Among the Dorippidse, Cymonomus is blind, and inCymonomops the eye pigment is wanting; in Ethusina—in contrast with Ethusa—the eye-stalks are not capable ofmovement, and the eyes are reduced. An interesting case is presented by one of the Brachy-ura, Bathyplax typhlus, A. M. E., in which, when occur-ring at depths of 400 to 450 fathoms, very short eye-stalkswith undevel
. Quarterly journal of microscopical science. smicrops, A. M. E. et Bouv., has degenerate eyes. The sub-family Munidopsina) (five genera and manyspecies) is characterised in distinction from the Galatheiua)by the reduced eyes.^ Among the Dorippidse, Cymonomus is blind, and inCymonomops the eye pigment is wanting; in Ethusina—in contrast with Ethusa—the eye-stalks are not capable ofmovement, and the eyes are reduced. An interesting case is presented by one of the Brachy-ura, Bathyplax typhlus, A. M. E., in which, when occur-ring at depths of 400 to 450 fathoms, very short eye-stalkswith undeveloped cornea3 are found; whereas, in exampleswhich are taken in shallower water, the short eye-stalkcarries a small but distinct cornea. The foregoing summary, relating to the eyes of Decapodaonly, was published in 1899. The description by Dr. Norman of his Ethusa granu- See ri£;s. 8 and 9. 444 E. RAY LANKESTER. lata (subsequently placed iu his new genus^ Cyuiouomus, byAlpbonse Milne-Edwards) was published in 1873 in a British Fig. S. oc.
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