14 LOBAT^E. 



SUBORDER LOBAT^E ESCH. 



Lobataz ESCH. Isis., p. 741. 1825. 



Lobatce AGASS. Cont. Nat. Hist. U. S., III. p. 289. 1860. 



Mnemiidce ESCH. Syst. d. Acalephen, p. 29. 1829. 



In the Lobatae we find that the diameter passing through the ten- 

 tacular apparatus is invariably the smaller, while the compression of 

 the spherosome is in the plane at right angles to it. This is reversed 

 in the Saccatae. The spheromeres at the extremity of the longer trans- 

 verse axis, the coeliac axis, develop into lobes. 



Family BOLINID^E Agassiz. 



Bolinidce AGASS. Cont. Nat. Hist. U. S., HI. pp. 200, 289. 18CO. 



The family of Bolinidae has here a somewhat different circumscrip- 

 tion from that ascribed to it by Professor Agassiz in his " Contribu- 

 tions." The genus Lesueuria, of which no species was known on our 

 coast in 1860, has been removed from the Mnemiidae to the Bolinidae. 

 It is evident from the description hereafter given of Lesueuria, that 

 this genus is only a Bolina with diminutive lateral lobes. The genus 

 Mnemiopsis also is shown to belong to the Bolinida3, and not the 

 Mneinidaa. 



BOLINA MEET. 



Bolina MEET. Mem. Acad. St. Petersb., H. p. 513. 1833. 

 Bolina AGASS. Mom. Am. Acad., IV. p. 349. 1849. 

 Bolina AGASS. Cont. Nat. Hist. U. S., III. p. 249. 1860. 

 Mnemia SARS (non Esch.). Beskriv., p. 32. 1835. 

 Alcinoe LESS, (iwn Rang). Zooph. Acal., p. 88. 1843. 

 Anais LESS. Zooph. Acal., p. 101. 1843. 



Bolina septentrionalis MEET. 



Bolina septentrionalis MERT. (non Agass.). Acad. St. Petersb., p. 515, PI. VH. 1833. 

 Bolina septentrionalis LESS. Zooph. Acal., p. 83. 1843. 



Off Matthaei Island, Behring's Straits (Mertens). 



