460 



A small specimen, growing on a Betepora. 



Augmagsaliii, ^^/9 1900, depth 140 fathoms (The Amdrup- 

 expedition 1900). Further it has been taken at the East-coast 

 of Greenland, depths 130 fathoms and 350 fathoms (The Swe- 

 dish arctic expedition 1883; Fristedt 1. c). Our specimen is a 

 small, flate specimen; the specimens mentioned by Fristedt 

 on the contrary are erect, branched or unbranched, thus be- 

 longing to Carter's var. ereda; the largest of Fristedt's 

 specimens reaches a hight of 100 mm. Topsent declares 

 (Résultats des camp, scient, du Prince de Monaco, Fase, XXV, 

 1904, 145) that he thinks these forms, the encrusting and the 

 erect, to be specifically identical, and 1 shall for the present 

 not enter into the question. 



Hadromerina. 

 Fam. Spirastrellidae. 

 Latrunculia du Bocage. 

 L. sp. 

 A species of this genus has been taken on 70° 32' lat. N., 

 8° 10' long. W., depth 470 fathoms (The Kyder- expedition 

 1891—92). 



Fam. Polymastiidae. 

 Polymastia ßow. 



P. uberrima 0. Schmidt. 

 Tab. XIV. Fig. 4. 

 1870. Rinalda uberrima 0. Schmidt, Grundzüge einer Spongienf. des allant. 

 Gebiet., 51, Taf. VI, Fig. 3. ^ 



Of this species we have seven specimens from East-Green- 

 land. Most specimens are somewhat diiferent from the com- 

 mon form as to their exterior, being rather high and more or 

 less globular, one specimen is quite globular and has even a 

 short stalk (PI. XIV, fig. 4), thereby getting a somewhat curious 

 appearance. The skeleton and the spicules on the other hand 

 are quite of the common construction and shape. 



