Some new Echinoderms from Greenland. 
By 
Dr. Th. Mortensen. 
On going over recently the collection of Greenland Echinoderms 
preserved in the Zoological Museum of Copenhagen, on account of 
the Catalogue of Greenland Echinoderms, which I had to work out 
for the SConspectus Faunæ Groenlandicæ””), I have found, besides 
Several forms not hitherto known from Greenland, two new species 
of Ophiurids and one new Asteroid. As I could not, after the plan 
of the "Conspectus”, include the description of new forms therein, 
I shall give preliminary descriptions of the three species here. A 
More full account of them I expect to give later on in the reports 
of the Ophiuroidea and Asteroidea of the «Tngolf” Expedition. 
1. Pteraster hastatus n. sp. 
One specimen taken in Bredefjord, South Greenland, in a depth 
of 310—330 M., by Cand. K. Stephensen (29/7 1912). 
R = 24 mm; r — 12 mm. 
Adambulacral spines 6, slightly increasing in length abradially ; 
the inner one is a little forwards (distally) directed; they are 
Covered by a thick skin. 5 oral spines to each side of the jaw, 
those in the middle not exceeding the others in length. They are 
united into a continuous web as in Pr. pulvillus; there remains, 
however, a small opening in the membrane between the two median 
Spines, so that they are, in fact, only united at the tip. The two 
Benene ag ene RJ S 
”) Grønlands Echinodermer. Meddelelser om Grønland, Bd. XXIII 1913. 
