14 LOBAT^. 



Suborder LOBAT^ Esch. 



Ldbatce Esch. Isis., p. 741. 1825. 



ioiato Ag ASS. Cont. Nat. Hist. U. S., m. p. 289. 1860. 



MnemMce 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 Saccatse. The spheromeres at the extremity of the longer trans- 

 verse axis, the coeliac axis, develop into lobes. 



Family BOLINIDJE Agassiz. 



Bolinidce Agass. Cont. Nat. Hist. TJ. S., HI. pp. 200, 289. 1860. 



The family of Bohnidge 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 Mnemiidse to the Bolinidse. 

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

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

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

 Mnemidas. 



BOLINA Mert. 



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

 Bolina Agass. Mem. Am. Acad., IV. p. 349. 1849. 

 Bolina Agass. Cont. Nat. Hist. U. S., HI. p. 249. 1860. 

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

 Alcinoe Less, (non Rang). Zooph. Acal., p. 88. 1843. 

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



Bolina septentrionaUs Mert. 



Bolina septentrionaUs Meet. (n^nAgass.). Acad. St. Petersb., p. 515, PI. VJi. 1833. 

 Bolina septentrionaUs LESS.^.-Zooph. Acal., p. 83. 1843. _f~ 



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



