Chap. III. TABULAR VIEW. 291 



Eucharis Esch. 1825. 



E. Tiedemanni EscJi. — Noiihcra Pacific, Eant of Japan (Eschscholtz). 

 The genus Eucharis should be limited to the species first 

 descri))ed in the Isis in 1825. 



Eucharis multicornis Esch., founded upon Beroe multicornis 

 Q. and G., is a genuine Chiaja, as far as the mutilated condition 

 of the species allows an identification. At least, there is no 

 other Mediterranean genus to which it may be referred. 



Judging from Eeynaud's figure, Eucharis novemcostata Less., 

 founded upon Beroe costata Ecijn., from tJie Indian Ocean, off 

 Ccjjlon, is the type of a distinct genus, which may be called 

 EuciiARiNA, and the species E. costata. 

 C h i a j a Z/'-m. 1 843. 



Ch. papillosa M.-Edw. — Alcinoe papillosa DcIIe Chiajc. — Chiaja 



neapolitana Less. — Bai/ of ]Vaj>lcs (Delle Chiaje). 

 Ch. multicornis 3I.-Edw. — Eucharis multicornis 117//. — Beroe multi- 

 cornis ^. and 6'.? — Adriatic: Trieste (Will) ; Jlediteri-ancan (Quoy 

 and Gaimard). 

 Ch. palermitana 3I.-Edw. — Pcdcnno (Milne-Edwards). 



Considering the extensive geographical range of most Aca- 

 lephs, it seems hardly proljable that there should exist three 

 species of Chiaja in the IMediterranean. I cannot agree with 

 Milne-Edwards, when he considers the genus Chiaja as identical 

 with Leucothea Mert. The tentacular apparatus is very differ- 

 ent in the two : at least, it is so described and figured by 

 Mertens, Will, and Milne-Edwards as to lead to the impression 

 that there exists a generic difference in the structure of the 

 tentacles of Leucothea and Chiaja. 

 Leucothea 3Ierf. 1833. — Leucothoea> Less. — Leucothoea Less. 

 L. formosa 3Icrt. — Azores (Mertens). 

 4th Family. Calymmid.e Gegenl)} (restricted). — Mnemiida) Esch. — Calyra- / 

 mea3 Less. 

 Calymma Esch. 1825. 



C. Trevirani Esch. — Pacific Ocean, near the Equator (Eschscholtz). 

 C. Mertensii Less. — Calymma Trevirani 3Iert. — Atkniic Ocean, off 

 the coast of Africa, near the Ecjxicdor (Mertens). — The separation 

 of this species is founded uj^on its occurrence in the Atlantic. 



' Gegeubaur writes it Caltjinid.e ; but it should be Calymmidjs. 



