GALEOLARIA. 39 



For although the proximal and distal nectocalyces closely resemble those of Biphyen 

 in their general structure and arrangement, the hydrcecium of the former is reduced to 

 a mere depression, and, according to Leuckart, the anterior rounded ends of the lateral walls 

 of the hydrcecial canal of the distal nectocalyx embrace the adjacent end of the 

 proximal one. 



The septal wall, which bounds the hydrcecial canal of the distal nectocalyx anteriorly, 

 again, is divided by a median emargination into two wide lobes, with rounded margins 

 (PI. Ill, fig. 5 a) ; and the pointed processes which surround the lower apertures of the 

 nectocalyces are large and strongly incurved. One, or even two, additional nectocalyces, 

 smaller than the others, and apparently destined to replace them, are commonly attached to 

 the proximal end of the cccnosarc. 



The somatocyst is short, and of even diameter throughout. The course of the necto- 

 calycine canals in the proximal nectocalyx is the same as in Diphj/es ; but, according to 

 Leuckart, the lateral and posterior median canals are united by peculiar anastomosing trunks. 

 The arrangement of the canals in the distal nectocalyx differs in the great loop, directed 

 forwards, which the lateral canals make. 



The polypites have the same structure as in Biplii/es. The hydrophyllia are spathe-like, 

 expanded, and deeply excavated on one edge. 



The distal nectocalyx figured in PI. Ill, fig. 5, was about five eighths of an inch long, and 

 was obtained in the Indian Ocean, near Timor. The species has been taken in other parts of 

 the Indian Ocean, and it appears to abound in the Mediterranean. Leuckart (Z. N. K., p. 33) 

 records the same, or a very similar species, from Greenland ; and Sars took it and another 

 species of the same genus [G. biloba) on the coast of Norway. 



