Ingolf Expeditionen IV, 2. 



Hi. Mortensen. Echinoidca II. Tab. IV. 





Th. Bloch et Pacht & Crone fat. Pacht & Crone phototgp. 



Brissopsis lyrifera (Forb.), elongata n. sp., Brissopsis sp. Hemiaster expergitus Lov. 



