ME. A. V. JENNINGS ON THE ISOPOD GENUS OCEOZETJKTES. 329 



wriggles away sideways, and refuses to give any hold for jaws or 

 palate. In fact, a more slippery or guileful egg was never yet 

 devised by nature's unconscious ingenuity." 



Eggs of 0. P/«7e/ipi wedged in the sheltered crevices as de- 

 scribed could not be reached by Mr. Allen in the person of the 

 predaceous fish, and for eggs of C. galeatus, closely entangled 

 among seaweed, much dodging would be impossible. Moreover, 

 so well are they concealed, that antics such as those described 

 would be unnecessary. 



EXPLANATION OF PLATE XII. 



Figs. 1 & 2. Egg of Cestracion Philippi, Schneider, and section of same. 



^ nat. size. 

 Fig. 3. Egg of Cestracion galeatus, Giinther. -J- nat. size. 



On the Structure of the Isopod Genus OurozeuMes, Milne- 

 Edwards. By A. Vafghan Jennings, F.L.S., F.Gr.S._, 

 Demonstrator of Botany and Geology in the Eoyal College 

 of Science, Dublin. 



[Eead 20th June, 1895.] 



(Plates XIII. & XIV.) 



As long ago as 1840 Professor Milne-Edwards * gave the name 

 of Ourozeuktes to an Isopod Crustacean which he had received 

 from the late Sir Eichard Owen, without information as to its 

 habit or the locality in which it was found. He recognized it 

 as one of the family Cymothoidae, and gave it this generic name 

 in consideration of the fact that all the abdominal segments are 

 fused together, leaving in the adult only faint lines indicating 

 the original sutures. His definition of the generic characters is 

 clear and accurate, and the accompanying figure is a satisfactory 

 representation of a dried specimen viewed from the dorsal 

 surface. It gives, however, a quite inadequate idea of the 

 appearance of the animal before desiccation, and I believe I am 

 right in saying that no satisfactory illustration has since been 

 published of this remarkable form. 



» ' Histoire N. des Crustac^s, p. 275, pi. 33. fig. 8 (1840). 



