28 catalogue of pteropoda. 



1. Psyche globulosa, 



Psyche globulosa, Rang^ Ann. Sci. Nat. 1825, v. 284, t. 7, f. I ; 

 Man. Moll. 117; Guerin, Icon. Moll. 11. 



Hab. Isle St. Pierre, near Newfoundland. 



4. TIEDEMANNIA. 



Body gelatinous, transparent ; neck elongated ; tentacula 2 ; wings 

 very large, cuneate, forming a disk ; mouth below, surrounded 

 by the lips. — Shell none. 



Tiedemannia, Chiage in Van Beneden, Nov, Mem. Acad. Brux. xii. 



21, 1839; Chiage, Anim. Invert. Sicil. i. 96, 1841; Krohn. Arch. 



Naturg. 1844, 324, t. 9, f. a, 1847, 36, t. 2, f. A ; Philippi, SiciL 



ii. 214 ; Zeitsch.fur MoL 1844, 204. 

 Cymbulia sp., Beneden, Mem. Ac. Brux. xii. 

 ? Gleba sp., Forsk. Faun. Arab. t. 43, D. 



Differs from Cymbulia in the mouth being prolonged and having 

 no shell. 



1. Tiedemannia Neapolitana. 



Tiedemannia Neapolitana, Chiage, Anim. Invert. 96, t. 32, f. 4, 7, 



1841 ; Philippi, Sicil. ii. 215, 1844. 

 Tiedemannia creniptera, Krohn in Erichs. Arch. Naturg. 1844, 324, 



t. 9, f. a; Erichs. Arch. Naturg. 1847, 36, t. 2, f. A. 

 Cymbulia .... Beneden, Nov. Mem. Acad. Brux. xii. ; Ontologia 

 'di Sci. Nat. Napoli, 1841, 81 ; his, 1843, 636; Zeitslc. f. Malak. 



1844, 78. 



Hab. Naples. 



B. Body and shell spiral. Operculum distinct, spiral. 



Fam. IV. LIMACINID^. 



Body spiral, sinistral ; fin without any intermediate foot-like lobe. 

 Shell spiral, sinistral, with the mouth angularly produced on the 



columella side. 

 Operculum distinct, spiral (rarely wanting ?.'*). 



