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Quarterly Journal of Microscopical Science, Vol s3-99, 89-93, Copyright © 1958 by Company of Biologists

The Vascular System of Crustacean Compound Eyes, especially those of the Euphausid, Meganyctiphanes norvegica

J. MAUCHLINE 1

1 Marine Station, Millport, Isle of Cumbrae

When the compound eyes of Meganyctiphanes and a number of decapods were examined a constant general pattern of blood-vessels was found.

The optic artery produced a branch to each of the following: the medulla terminalis, medulla interna, medulla externa, lamina ganglionaris, and the subretinal region. It then terminated in the dorsal region of the eye, passing the remaining blood into the ommatidial sinus.

The blood from the ommatidial sinus and from the systems of fine vessels in the nerve ganglia and subretinal region flows into the eye-stalk sinuses, whence it reaches the cephalothoracic sinuses.






© The Company of Biologists Ltd 1958