OCYROEiE. 



25 



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

 well out from the digestive eavity, as is 



.seen in a profile view from the narrow 

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

 side .shows this sjjecies 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 Ctenophorte. The connec- 

 tion between the lateral and longitudinal 

 ambulacra, forming a circular tube round 

 the actinostome, can be traced in Fig. 28, 

 and it difters in no essential way in its 

 mode of formation from what we observe 

 in Bolina. 



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



Museum diagram No. 2 after A. Agassiz. 



Fi^•. 2- 



Family OCYROEiE Less. 



Ocyroea: Less. Zooph. Ai 

 Ocyroea Agass. Cont. N 



.cat, p. 98. 1813. 



[)n. ^icai., p. va. loij. 



mt. Nat. Hist. U. S., III. p. 292. 1860. 



OCYROE R.UJG. 



Ori/rne Rant, {nnn Per. ot Les.). Mem. de la Soc. d'llist. Nat., IV. p. 170. 1829. 



Ucjiroe Lkss. Zooph. Acal., p. 98. 1843. 



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



Ocyroe maculata Rang. 



Oriirni' maciihitd Raxg. IMem. Soc. d'llist. Nat. de P,aris, IV. 1829, PI. 20, Fig. 1. 



Ocyroe macidaUi Less. Zooph. Aoal., p. 99. 1843. 



Oryrne maculata Agass. Cont. Nat. Ilist. U. S., III. p. 292. 18G0. 



Antilles (Rang). 



Fig. 27. Lcsueuria seen from the abactinal pole. 



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

 ambulacra. 



NO. II. 4 



