IJ. Edward T. Browne. [> T o. 4 



Margelis Nordgaardii, nova species. 

 Plate IL fig. 1. Plate III, fig. 5 & 6. 



Description. 



Umbrella globular, about as broad as long, with the margin 

 curved inwards; velum narrow. Stomach about half the length of 

 the umbrella cavity. 



Four oral tentacles, each 4 — 5 times dichotomously branched. 

 Gonads on the stomach occupying the whole space between the 

 perradii. 



Marginal tentacles about 5 — 7 on each of the four compound 

 bulbs, which are sligiitly triangular in shape. Ocelli absent, 



Size. Umbrella 4 mm. in length and width. 



Colour. Gonads and basal bulbs yellowish brown (in formalin). 

 Korsfjord. 50—100 m. 22. 9. 1899. One specimen. 



An intermediate stage. Umbrella 2 mm. in length and width, 

 faiiiy thin. Oral tentacles 3 times dichotomously branched. Gonads 

 very small, just beginning to develop. Three marginal tentacles on 

 each of the four compound bulbs. 



Byfjord. 0—100 m. 20. 9. 1899. One specimen. 



An adult. Umbrella 4 mm. in length and width. Stomach on 

 a very short peduncle, and the whole manubrium about three 

 quarters the length of the umbrella-cavity. Oral tentacles 4 — 5 

 times dichotomously branched. Gonads ripe, ova protruding out of 

 the ovaries and probably developing into planulae. Marginal ten- 

 tacles 4 — 5 on each of the four compound bulbs. (One bulb with 

 5 long tentacles; two with 4 long tentacles; one with 4 long ten- 

 tacles and a very small one which is developing). 



Byfjord. 0—50 m. 6. 11. 1900. One specimen. Plate 



ii, fig. i. 



An adult. Umbrella 4 mm. in length and width. Stomach 

 short, the whole manubrium about one-quarter the length of the 

 umbrella cavity. Oral tentacles 4 — 5 times dichotomously branched. 

 Gonads, male, occupying the whole space between the perradii 

 (Pl. III, fig. 6). Marginal tentacles 5—7 on each compound bulb. 

 (One bulb with 6 long tentacles; two with 5 long tentacles; one 

 with 5 long tentacles and 2 smaller ones in the process of develop- 

 ment). (PL III, fig. 5). 



The characteristic feature of this species is the absence of 

 ocelli on the compound basal bulbs of the tentacles. There is not 



