54 



lateral ridges bend very much to the proximal, odd dorsal one. So they are not exactly on the 

 lateral sides of the nectophore, but more antero-lateral. They bend downwards near the basal 

 part of the nectosac and end into two well-marked elegantly shaped lateral teeth. The dorsal 

 tooth of the proximal ridge is curved and of the same length as the lateral ones. The nectosac 

 is cylindrical, blunt at the apex, of nearly the same breadth throughout its length, its top is 

 blunt. We found a dark pigment spot in the top, such as is found in Diphyopsis campatiulifera^ 

 but of the course of the canals in the nectosac nothing was visible. 



The hydroecium is elongate-campanulate. It is situated very near the half of the length 

 of the nectophore, a higher jiosition than was found in the other Diphyopsinae of the Siboga 

 expedition. Its limits near the antero-ventral points and the postero-ventral ones form an oblique 

 line, the postero-ventral ridges being shorter than the antero-ventral ones. These ridges however 

 are pot concave but straight. 



The somatocyst is of the same length in proportion to the hydroecial cavity as in Diphyopsis 

 diphyoides. It seems to be a little larger near the middle-part, not being absolutely cylindrical. 



Of stem and appendages nothing particular can be said owing again to the preservation. 

 In Cat. 55 B.I. five more developed groups are to be seen, well divided one from the other; 

 still they are not mature, for the shape of the bracts is not yet well defined. They show, besides 

 the bud for the future gonophore, also the bud for the special gonocalyx. As Cat. 55 B.I. was 

 the best preserved nectophore of all, we had to use it for our sketch, though the stem had 

 detached itself from the base of the somatocyst and this makes our sketch indistinct and irregular. 



We dedicate this elegant little Diphyid to the eminent leader of the Siboga expedition. 



33. Diphyopsis anoviala nov. spec. PI. VIII, fig. 69; PI. IX, fig. 70. 



Stat. 213. Saleycr-anchorage and surroundings including Pulu Pasi Tanette, near the North- 

 point of Saleyer-island. Cat. 58 G. formald. 4°/o. One superior nectophore. 



A single superior nectophore of 1 3 mm. length resembling absolutely Diphyopsis cai/i- 

 pattulifera in its structure and shape was found by the Siboga expedition. The course of the 

 ridges, the serrating of the teeth in the lower part of the nectocalyx, the shape of nectosac, 

 somatocyst, hydroecium, all is identical with the same in Diphyopsis campanulifera. 



The only difference consists in the course of the canals in the nectosac which for once 

 was very clearly marked. The nectosac itself is of a cylindrical shape, narrowing very suddenly 

 in the up])er fourth part of the nectophore and ending in a thin tube-like appendage. The 

 course of the canals is as follows. F"rom the base of the somatocyst a principal canal goes 

 down probably to the base of the nectosac near the velum. This principal canal was not very 

 easily traced. 



There it divides itself into four canals, forming- first an enlargement such as Ciiux calls 

 a "Gefassplatte" (92 p. 93). One of these canals is the ringcanal; it runs along the base of the 

 nectosac, along the velum. Another canal follows the hindwall of the nectosac, goes u]) to the 

 top, where another (but now a smaller) enlargement is formed and then runs down following 

 the anterior wall of the nectosac towards the velum; it unites at the end with the ringcanal. 



