REPORT ON THE SIPHONOPHORtE. 



107 



Synopsis of the Genera of Eudoxidse. 



I. Subfamily 



Diplophysid^:. 



Bracts not polyhedral, never 

 prismatic, without com- 

 plete sharp edges and poly- 

 gonal faces. (Exumbrella 

 rounded and smooth, not 

 facetted.) 



II. Subfamily 



Aglaismioe. 



Bracts polyhedral, more or , 

 less prismatic, with many " 

 sharp edges and polygonal 

 faces. (Exumbrella facet- 

 ted and angular.) 



Bract hemispherical or mi tri- 

 form, rounded, without 

 sharp edges, and without 

 pointed apex. 



Bract conical, spathiform or 

 pyramidal, with a pointed , 

 apex, and often with some ' 

 incomplete edges. 



Bract more or less cuboidal 

 with an inferior opening 

 into its cavity at the basal 

 face. 



Bract not cuboidal, with an 

 anterior opening into its 

 cavity at the obliquely 

 bevelled ventral face. 



" Phyllocyst simple, without 

 radial canals, 



Phyllocyst with four radial 

 canals arising from its 

 base, .... 



Phyllocyst simple. Bracteal 

 exumbrella smooth, with 

 no sharp edge, . 



Phyllocyst simple. Bracteal 

 exumbrella with three or 

 five edges, 



Phyllocyst with two lobate 

 lateral canals. Bract with- 

 out caudal apophysis, 



Phyllocyst with four cruciate 

 radial canals. Bract with 

 a pyramidal caudal apo- 

 physis, .' 



Phyllocyst descending, with 

 two superior lateral canals. 

 Bract with five odd trape- 

 zoidal and two paired 

 pentagonal faces, 



Phyllocyst ascending, with an 

 odd inferior canal. Bract 

 with four odd and four 

 paired faces, 



10. Diplopliysa. 



11a. Eit/loxella. 



11b. Cucubulus. 



12. Cueullus. 



13. Cuboides. 



16. Aglaisma. 



14. Amphiroa. 



15. Sphenoides. 



Genus 10. Diplophysa, 1 Gegenbaur, 1854. 

 Diplopliysa, Ggbr., Zeitschr. f. wiss. Zool., Bd. v. p. 291. 



Definition. — Eudoxidse with a hemispherical or subspherical bract, without sharp 

 edges, in the vertical axis of which is placed a simple ovate or cylindrical phyllocyst. 

 (Eudoxise of the genus Sph&ronectes.) 



The genus Diplophysa comprises those monogastric Eudoxidse which arise from the 

 polygastric Monophyid genus Sph&ronectes (Genus 18). It was founded in 1854 by 

 Gegenbaur for a Mediterranean Eudoxia, distinguished by a subspherical bract with a 

 simple phyllocyst. 2 It is very similar to another Mediterranean species, described in 

 1844 by Will under the name Erssea truncata. 3 Thirty years later Claus (70) demon- 



1 Diplophysa ~ Double vesicle, Vn'Mx, (pitta.. 2 7, p. 291, Taf. xvi. fig. 3. 



3 65, p. 82, Taf. ii. tig. 28. 



