12 NORMAN: ON THE MOLLUSCA OF BERGEN FIORDS. 



ship entering from the ocean by Ivors Fiord sails towards Bergen 

 There is excellent dredging ground everywhere about and among 

 these islets. 



The most westerly of the islets, of which Bukken occupies the 

 centre, is Leero, and between this islet and the outer island Sartoro 

 is the main channel, known as Leerosin. Leerosin (Stations 1 5, 

 20, 26) has a rough stony bottom with 80-110 fathoms water and 

 is very good ground for those animals which live on hard bottom. 

 Foraminifera here are mainly restricted to species which adhere to 

 stones or other substances, Valvulina, Ano/nalina, Truncatiili/ia, 

 Planorbulina^ Ti7ioporits lucidus, Pulviiiulina conceiitrica^ and such 

 like forms. Sponges are numerous and good including PJiakellia 

 veniilabriim, Quasillina brevis and se^-eral apparently undescribed 

 species; the Echinodermata include Echinus Norveglcus, Porania 

 piilvillus, Ophiactis Ballii, Ophiaca7itha abyssicola, Ophioglypha 

 carnea and affinis ; a beautiful coral perhaps that figured by 

 Duncan as Stylaster gemmascens* is not rare. The annelids are 

 chiefly tube-making species, and numerous Serpulas. Polyzoa 

 are abundant and good including Eschara Imvis and cervkomzs, 

 Horner a lichenoides and violacsa ; Idmonea Atlantica, Corofiopora 

 inmcata, Bicellaria Alderi, Flustra Barleei, Membranipora sac- 

 cidata, rhynchota and imbellis ; Escharipora Jiitido punctata, 

 Smith; Lepralia abyssicola, polita, lagueata, Megapom tingens, 

 Setosella zndnerata, Cellcporella lepraloides, &c. Among the 

 rarer mollusca are Terebratula cranium, Pecten Tested and 

 vitreus var. abyssorum, Lima excavata and crassa, Area nodulosa, 

 Poromya gfanulata, Necsra jugosa and cuspidata; Propilidium 

 ancyloides ; Scissuiella crispata, Rissoa ci-micoides, Leocochlis 

 granosa, Cerithium vieiula, Cerithiopsis costulata. Crustacea are 

 scarce. 



Kors Fiord requires much more extended investigation than 



* Duncan, Madreporaria dredged by ' Porcupine,' 1869, 1S70 ; Trans. 

 Zool, Soc. vol. viii., 1871, p. 332, pi. xlix., figs. I— 15. 



J.C, ii., Jan., 1879. 



