OCYROE^. 



25 



spherosome. The lateral tubes are also very attenuated, and bulge 

 well out from the digestive cavity, as is 

 seen in a profile view from the narrow 

 side (Fig. 26). The view from the narrow 

 side shows this species to be compressed 

 to a far greater extent than anything we 

 know in Bolina ; approaching almost to 

 Mertensia. When in motion the auricles 

 are often held out extended from the body 

 (Fig. 26), one pair bending one way, and 

 the other in the opposite direction, as is 

 shown in Fig. 27 ; the outline of the body 

 when seen from the abactinal pole is nearly 

 elliptical (Fig. 27), and we have not the 

 strongly-ribbed appearance so characteris- 

 tic of the other Ctenophorge. The connec- 

 tion between the lateral and longitudinal 

 ambulacra, forming a circular tube round 

 the actinostome, can be traced in Fig. 28, 

 and it differs in no essential way in its 

 mode of formation from what we observe 

 in Bolina. 



Massachusetts Bay, and Newport, E. I. (A. Agassiz). 



Museum diagram No. 2 after A. Agassiz. 



Family OCYROE^ Less. 



Ocyroem Less. Zooph. Acal., p. 98. 1843. 



OcyroecE Agass. Cout. Nat. Hist. U. S., III. p. 292. 1860. 



OCYROE Rang. 



Ocyroe Rang (non Per. et Les.). Mem. de la Soc. d'llist. Nat., IV. p. 170. 1829. 



Ocyroe Less. Zooph. Acal., p. 98. 1843. 



Ocyroe Agass. Cent. Nat. Hist. U. S., IH. p. 292. 1860. 



Ocyroe maculata Rang. 



Ocyroe maculata Rajjg. Mem. Soc. d'llist. Nat. do Paris, IV. 1829, PI. 20, Fig. 1. 



Ocyroe maculata Less. Zooph. Acal., p. 99. 1843. 



Ocyroe maculata Agass. Cont. Nat. Hist. U. S., III. p. 292. 1860. 



Antilles (Rang). 



Fig. 27. Lesueuria seen from the abactinal pole. 



Fig. 28. Seen from the actinal pole, to show tlie connection of the lateral and longitudinal 

 ambulacra. 



