ProtiHtpliinktii 



( . CDtitortiis Sem IT. 



Generally speakiiiL;- rare ami seaire. only oceasiunally imuierous 

 (luiini; the diatom intiow in the sprin? of 18'.)5). 



DiatrihKt'wn: More or less frequent on the noi'tliern Hnrojtean 

 coasts of the Atlantie and its arms. On the west coast of Norway 

 frequent, often numerous; most likely here native. 



\'ery scarce (iu thiec samples) and only singly. 



lUiitrUmtion : On the west coast of Norway somewhat fre- 

 quent, especially at the beginnin.<;' of the diatom inflow (March 1898). 

 Does not occur iu all the inonths of the year here neither. Off 

 the Facroe Islands not vnw in the months of Auo-. — September 

 1902. otherwise only once in March 1901 (cfr. Ostenfeld L. 116, 

 p. 573). According to Gkan L. 70, p. 179 on the north east coast 

 of Iceland, scarce. Otherwise found more or less scarce on the coasts 

 of the Noi'th (Sea and Skageraek. 



AccordiuiT to Gran, this species is neritic (endocysts being 

 found). My opinion is that it is probably neritic. but not likely to 

 prove native with us. 



r. constrictus (Iran. 



Very rare and scarce, only found twice: -■'A 1899, in the sea 

 off IngO, 0—300 m.; Vo 1899, VardO, 0—200 m. 



Distribution : Occurs on the northern coasts of the Atlantic 

 on the American side, off Iceland, the Faeroe Islands, Great Bri- 

 tain and the coasts of the North tSea. On the west coast of Nor- 

 way found in 1898 nearly all the year through, most numerous in 

 April and November. Does not appear to be native on the nor- 

 thern coasts of Norway. 



C. laciniosus Schl-tt. 



On the whole rather rare and scarce, although occasionally 

 more frequent in the month of May 1899. 



Distribution: Northern temperate coast form. On the west 

 coast of Norway frequent; occurs during most months, but seldom 

 numerous. Rare round the Faeroe Islands. At Ona in Romsdalen 

 March— October, reaching its maximum in May. iCfr. Gean L. 70, 

 p. 178). 



C. brevis Schitt. 



Cfr. E. .JoRGEXSEX L. 91. p. 12 and Ostenfeld L. 114, 

 p. 295. 



Very rare and scarce, only found in two samples: V* 1899, 

 Helle, 0—8 m.; 7* 1900, the Folden Fiord I, — 100 m. 



Distribution : Not sufticiently known, as this species has been 

 confused with the foregoing one. Rare on the west coast of Norway, 

 and generally found singly; noticed in the months of August, No- 

 vember and December. In the English Channel in May 1903, 

 scarce. Does not appear to be native on the northern coasts of 

 Norway. 



C. Scliiittii Ci.. 



Very rare and scarce, only found in two samples: Lyngen, 

 ■Vi 1899, 0—50 m.; Malangen =7i 1899, 0—300 m. 



Distribution: Southern form, distributed along the coasts of 

 the North Sea. Rather rare on the west coast of Norway, (1898: j 

 Augu.;— September, November— December). Often found iu the [ 



open sea. Hound the Facmc Islands, both in an ea.sternly and wcst- 

 ernly direction, at considerable distance out. in quantities in .May 

 19n:{ (!,. is. |\'). [^cems to come to us as a .southern oceanic 

 form. 



C. WilUi GriA.N, 



Raie and .scarce, only found in a few samples. Most likely 

 the same form which is mentioned by Ostexfei-u from the Faeroe 

 Islands (L. IKi, p. 573) as an intermediate form between C. 

 Schtlttii and C. WiUci. 



Distribution: Freiiuent on the west coast of Noruay and 

 probably native here. Distributed along the coa.sts of the North 

 Sea, and extends farther northwards than the foregoing species. 

 Does not. however, appear to be native to the northern coa.sts of 

 Norway. 



C. diadema (Eiihu ) (;ra.s. 



Conmion and in 'jn-at (juantities during the diatom intiow in 

 spring; at other times rare and singly. < )ften found with end- 

 ocysts. 



It is possible that there aix'. in this species, still included spe- 

 cifically different forms. 



Distribution: Arctic and boreal coast form. Rare round the 

 Faeroe Islands. Found in most months of the year, but as a rule 

 not numerous, on the west coast of Norway. Very frequent at Ona. 

 in Romsdalen, in March— April, less so in June— July. (Grax L. 

 70, p. 179). 



C. furcillHtiis li.Mi.. 



In large quantities during the diatom intiow in the spring of 

 1899, less abundant in the samples of 1900. May easily be con- 

 fused with other species, when its characteristic endocysts are 

 wanting. In 1900 they were mostly absent. 



Distribution: Arctic coast form, widely distributed from the 

 coasts of Iceland right up to the arctic regions, both on the Ameri- 

 can and European side. Wanting on the west coast of Norway 

 and round the Facroe Islands. Frci|uent in March — April at Ona 

 (Gran L. 70. p. Iso). 



Very rare and scarce, only found in two of the samples, Hel- 

 ligvær, '-/il899, 0—50 m., and Bålstad, ='/3 190n, 0—50 m. 



Distribution: Southern coast form from the temperate, Euro- 

 pean coasts of the Atlantic, northwaids to Skagerack. the North 

 Sea and the west coast of Noi'way. On the latter coast, frequent 

 in nearly every month of 1S9S, most numerous during the .summer. 

 Ona: March. July— August, occasionally (Ghan L. 70, p. 179). 



Very seldom noticed as far north as Spilzbergon. Not men- 

 tioned from the Faeroe Islands. 



C. dehilis Cl. 



Frequent during the diatom intiow in spring, often in large 

 quantities; at other times very scarce. 



Distribution : Distributed along the northern European coasts 

 of the Atlantic, the North Sea and Skagerack. On the west coast 

 of Nonvay and round the Faeroe Islands very frequent, with maxi- 

 mum twice a year, in the spring months and in August. Also 

 found near Greenland. 



