36 



Subfam. D iphy aby lin ae nobis. 

 Diphyabyla nobis. 



20. Diphyabyla Hubrechti nov. gen. nov. spec. PL VI, Fig. 47. 



Stat. 42. Lat. 7°2o'.7S., Long. ii7°58'.3E. Cat. 118. ale. go"/^. fixation in Cu SO^, then 

 chromacid 1°/^. One superior nectophore. 



Through the fixation in Cu SO4, then chromacid, this unique specimen of an entirely 

 new genus has probably preserved much of its original shape. The colour of course is much 

 altered but the ridges stand out very clearly, they are of a brownish colour and show markedly 

 atrainst the greenish gelatinous substance. 



The Diphyabyla resembles Diphyes concerning its top, Abyla with respect to its base, 

 which has induced us to propose a name which is a combination of that of the two genera. 



Again we will use the ridges and their letters as we used them for Abyla Leuckarti, 

 Abyla Haeckeli and Abyla trigona. 



n 



46. 



I 



47. 



J^>^ 



49. 



Figg. 46 — 51. Diphyabyla Hubrechti nov. gen. nov. spec. The facets of the superior nectophore. 



Fig. 46: facet A, Fig. 47: facet E, Fig. 48: facet D, CII, CI combined, Fig. 49: aperture of the hydroecial cavity B, 



Fig. 50: facets F (F'), Fig. 51: facets G+H (C + H') combined. Figg. 46—51: 2 X- 



We tried to make a comparison between the former and our new specimen. It is especially 

 Abyla Leuckarti which is of the greatest importance. 



We suppose ridges k, /', .s-, .$• and the lateral side of ridge r of Abyla Leuckarti (see 

 textfig. 45) to have continued upwards; ridge .y has moreover gone as far as the point where 

 it meets ridge // at an acute angle. 



In the apex of the nectophore these ridges k, k, s, s, r grow convergent. Ridges j- and 

 r on both sides meet near the top and go on as one single ridge to the apex, so that we 

 count there four ridges, being /•, /•, .s- -f r and .r -\- r. 



The facets are situated as follows: Around the opening of the nectosac we distingui-sh 

 again the usual facet A (textfig. 46) whose proximal ridge g is only half as long as the 

 opposite ridge i. 



