>90 CTENOPIIORiE. Part II. 



Bolinopsis Aij. 18G0, p. 201. — Bolina Mcrl. 1833. 



This gonus diflbrs from Boliiia in having its anterior and 

 posterior rows of locomotive flappers extending to the bend of 

 the chymiferons tubes, and the abactinal direction of the medial 

 anastomosis of the latter, Avhich trend in the opposite direction 

 in Bolina. The spherosome is papillate, while that of Bolina 

 is smooth. The large lobes are deeply indented. 

 B. elegans Ag. — Bolina elegans Med. — Honth Hca (Mertens). 

 3d Family. Mnemiid.k i/w//. (restricted). 



There are two groups of genera included in this lamily: 

 Mnemia (Alcinoe), LeSueuria, and Mnemiopsis the body of 

 Avhich is smooth, and Eucharis, Chiaja, and Leucothea with 

 a 2)apillate surface ; but, until the structure of these papilla? 

 is Ijctter known, the value of this difference in regard to 

 classification niust remain doubtful. 

 Mnemia Eich. 182-3. 



M. Schweiggeri Esch. — Bio Juiiciro, Brazil (Eschscholtz). 

 M. Kuhlii Esch. — Pacific Ocean, near i/ie Equator, Lomj. 180° of Greenvich. 

 Judging from the figure and description of Eschscholtz, 

 this species must l)e generically distinct from M. .Schweiggeri 

 on account of its aljactinal appendages. 

 Alcinoe Bane/ 1829. 



A. vermiculata Bane/. — Coast of Brazil; ahumlant in t/ie Baij rf Biu 



Janeiro (Rang). 

 A. rosea Mert.— Off tlie Falldand Hands (Mertens). 



Although this genus is generally adopted, I am strongly 

 inclined to believe that it is founded upon the same species 

 as the genus Mnemia of Eschscholtz. There is nothing in 

 the description of Mnemia Schweiggeri Esch. to preclude the 

 possil)ility of its identity with Alcinoe vermiculata Bang, and 

 both were observed in tlie same locality. 

 Alcinoe norvegica Less, is a true Bolina, B. norvegica. 



I am unable to ascertain what Alcinoe Smithii Forbes may 

 Ije. It is said to l)e found near Aitsa Craig and on the 

 Bisli cejdst. 

 LciSueuria Milne-Edw. 1841. 



L. vitrea M.-Edw. — Alediterranean : Bag of Nizza (Milne-Edwards). 

 Mnemiopsis Agass. 1800, p. 209. 



M. Gardeni Ag. See p. 209. — CJiarleston, /S'. Carolina (Agassiz). 



