THE CALYC0PH0R1D.E. 29 



to retain generic and specific names for the monogastric Cahjcoplioridce (which I shall term 

 Diplit/ozooids) as the temporary titles of spurious genera and species, which will be suppressed 

 in the course of further investigation. 



The following arrangement will furnish a general view of the known modifications of the 

 Calycophoridan type. The names of those species only which appear to me to be adequately 

 described are cited. 



I. Fam. DIPHYD^. 



Calycophoridae with not more than two nectocalyces, which are polygonal. The hydroecium of the 

 proximal one is complete, or closed on its posterior side. The hydrophyllia well developed. 



a. The proximal nectocalyx mitrate, as large as, or larger than, the distal one. The hydrophyllia 



spathiform and smooth externally. 

 Genus I. Diphyes. 



1. D. dispar. 



2. D. appendiculata. 



3. D. Chamissonis. 



4. D. miira ? 



5. D. Kochii ? 



Sub-genus Galeolaria. 



1 . G. filiformis. 



2. G. biloba} 



b. The proximal nectocalyx polyhedral and smaller than the distal one. The hydrophyllia facetted. 



Genus II. Abyla. 



1. A. pentagona. 



2. A. Bassensis. 



3. A. trigona. 



4. A. Vogtii. 



5. A. Leuckartii. 



II. Fam. SPHiERONECTID^. 



Calycophoridae with probably not more than two nectocalyces ; the proximal one being spheroidal, 

 with a complete hydroecium. No hydrophyllia? 

 Genus III. Sph^ronectes. 

 1. S. Kollikeri. 



III. Fam. PRAYID^. 



Calycophoridae with only two nectocalyces, whose hydroecia are both incomplete or groove-like. 

 The polypites are provided with hydrophyllia. 



' Sars, ' Fauna littoralis Norvegise,' Erstes Heft, p. 45, tab. vii, fig. 16, describes a " Diphyes 

 biloba," as distinct from "Diphyes truncata," which is a Galeolaria filiformis. The extreme shallow- 

 ness of the hydrcecium (judging by the figure) leads me to think that " D. biloba" is also a 

 Galeolaria. 



