REPORT ON THE SIPHONOPHOR^E. 151 



The genus Galeolaria (confounded by later authors with Epibulia) was founded in 

 1807 by Lesueur, in a manuscript not published, for two Australian Diphyes, which were 

 figured by Quoy and Gaimard under the names Galeolaria australis and Galeolaria 

 quadridentata (2, pi. v. figs. 30-33). The same were afterwards regarded by Blainville as 

 the types of this genus (24, p. 139). The first accurate description of two Atlantic 

 species belonging to it was published in 1846 by Sars (under the names Diphyes truncata 

 and Diphyes biloba (27, p. 41, Taf. vii.). A Mediterranean species was accurately 

 described by Gegenbaur as Diphyes turgida (68), and another by Vogt as Epibulia 

 aurantiaca (6). An Arctic Galeolaria, inhabiting the Greenland Sea, is Diphyes sarsii 

 of Gegenbaur (10, Tab. xxx. figs. 30, 31). The Iudian Galeolaria fil ij brmis described by 

 Huxley (9, pi. iii. fig. 5) is probably identical with the original Galeolaria australis of 

 Lesueur. Different from all these species is the Galeolaria stephanomia, inhabiting the 

 Tropical Pacific, described by Brandt as Diphyes stephanomia (25, p. 32). I was able to 

 compare the excellent figure and description of it (unfortunately not published !) which 

 Martens had taken from nature as early as 1827. 



Galeolaria (synonymous with Sulculeolaria of Blainville) differs from Diphyes in the 

 complete absence of a hydrcecium. The basal part of the truncate ventral side of the 

 first nectophore is simply attached to the corresponding apical part of the second. 

 Between them the siphosome depends freely. The nectocalycine ducts are therefore very 

 different in the two nectophores, entering into the first at its base, into the second at its 

 apex. The ventral radial canal is very short in the first, very long in the second necto- 

 phore. The ventral plate of the umbrella is prolonged in both nectophores over their 

 basal ostium in the form of a bilobate lamellar apophysis (compare Leuckart, 8, p. 279, 

 and Huxley, 9, p. 38). The gonophores ripen on the stem, and are not detached as free- 

 swimming Eudoxise. The conns are dioecious (p. 99). 



Genus 27. Diphyes, 1 Cuvier, 1817 (sensu restricto). 

 Diphyes, Cuvier, Le Regne animal, t. iv. p. 61. 



Definition. — Diphyidse with two angular, slenderly pyramidal nectophores, of similar 

 form and subequal size, one placed behind the other. First nectophore with a conical or 

 campanulate hydrcecium. Cormidia without special nectophores (free as Cucullus, Genus 

 12). Bracts pyramidal, conical, or spathiform, with a pointed apex. Phyllocyst simple, 

 usually large and ovate, without radial canals. 



The genus Diphyes was founded by Cuvier in 1817 upon the first figure published of 

 any Calyconecta, the Diphyes dispar of Chamisso (16), which was figured first by Bory 

 in 1804 under the name Biphora bipartita (13, p. 134). Eschscholtz gave in 1829 a 

 more accurate description of Diphyes, and the following definition : — " Ductus nutritorius 



1 Diphyes = Double animal (oifvvis) ; Calyconecta with a double nectophore. 



