236 GALEOLARIA. 



Key to the species. 

 Anterior nectophore. 



1. Without any basal teeth, or wings. 



G. truncata Sars, = G. inflata Chun? 

 = G. conoidea Kefferstein and Ehlers? 



2. With basal teeth or wings. 



a. With 2 large ventral wings only. 



G. australis Quoy and Gaimard = ? 

 G. biloba Sars = G. chuni Lens and 

 Van Riemsdijk. 



b. With 2 large ventral wings, and 2 small dorsal teeth. 



G. quadrivalvis Blainville. 



c. With 2 large ventral wings, 3 small dorsal teeth, and on each side 



a small triangular lateral angle. G. monoica Chun. 



Posterior nectophores. 



1. Basoventral wing, single, undivided. 



a. No dorsal or lateral teeth. 



a'. With prominent longitudinal lateral wing-like enlargements, termi- 

 nating above the basal margin. 



G. australis Quoy and Gaimard. 

 = ? G. biloba Sars. 

 a^. Without prominent lateral wing-like enlargements. 



G. truncata Sars. 



b. With 3 dorsal teeth, and 2 lateral triangular lateral angles. 



G. monoica Chun. 



2. Two basoventral wings. 



a. With 2 large lateral and 2 dorsal teeth. Nectosac with circular trans- 

 verse constrictions. G. quadrivalvis Blainville. 



G. truncata is so far known from the Atlantic alone; and its distribution 

 is considered later (p. 369); The records of the occurrence of the remaining 

 species of the genus show that they are widely distributed over the Indo-Pacific 

 region as well as the Atlantic. 



Until recently G. biloba ( = australis) was supposed to be a northern species 

 but the captures by the "Siboga" and by the "Albatross" show that this is 

 doubtful. 



