Protistplanktoii. 



Vorv rare and scarce, only in 2 samples: llenninirsvær '7i 

 18!V.). ()— ISO ni.; the \'c>st Fionl. ' ■.. IS'.)!), n— -joo ni. 



DixtrUndiou : Only known fnmi I lie west coast of Norway, 

 where it is very rare. I'robaMy a lcni|ieiate, oceanic species. 



TiiitiiiiioitMiw Stein. 

 T. nitida Uraxdt. 



Ukani.T 1.. l(i. p. "iS. pi. .-!. f. 1. 



Very tVei|Mcnt. dl'ten nnnierons. Seems to iirel'er water of a 

 low salinity. 



The species varies considerably. 1 have to some extent in tlie 

 tallies made a di.stinction for one form. viz. ntr. oniUs, which is, 

 however, more frequent than wonld appeal' from them. 



Distribution: Further, only known from the Kava.jak Fiord, 

 Greenland, ilost probably an arctic, neritic species. 



Var. oralis .Jokg. ii. var. 

 (Pl. XVIII, tig. 115). 



The house is brimless, in the most distinguished form narrowed 

 towards the moutli. The lower part is evenly rounded off. The 

 greatest breadth of the house is a little above the middle. 



A strong, compact covering of shining small paiticles on the 

 house, as in the main species. 



This vai-iety is more frequent than appears from the tables, 

 as it is mostly included under the principal species. 



Often forms may be found which are intermediate between 

 this one and the main species; such an one is illustrated by Beandt 

 1. c. As a rule, the principal species is very different in shape 

 from the variety, through a trace of a brim at the mouth, an 

 almost cylindrical upper part and a bluntly pointed lower part. 

 Forms without any trace of a brim at tlie mouth are. however, of 

 freijuent occurrence. 



The Norwegian species seems generally to be somewhat smaller 

 than the Greenland one, about 70 ii in length. 



Var. sinuata Brandt. 



(PI. xvm, fig. 116). 



Tintinnoyiils shmata Branbt Ij. 16, p. 58, pi. 3, fig. 2. 



Considering that the species Tintlnnopsis nitida varies exceed- 

 ingly, I think that is hardly possible to look upon T. sinuata as 

 a distinct species. In the course of development both the spreading 

 brim at the mouth and the shape of the house vary considerably. 

 AVe have as extremes, on the one hand, rar. ovalis, without a brim, 

 01- with only a very indistinct one, and an evenly arched contour 

 in side view; on the other, var. sinuata, with a distinct brim and 

 a contour which is narrowed in the lower part and bluntly pointed 

 (at the end square). 



The individual illustrated, which must undoubtedly be reckoned 

 as a Tintinnopsis sinuata Beandt, is not so conspicuously different 

 from T. nitida as Brandt's Jigure, but the characteristics are 

 plainly seen which are mentioned as separating between T. sinuata 

 and T. nitida. Intermediate forms between the one illustrated and 

 the principal form also occur. 



Distrilndion : As the principal species. Individuals which 

 decidedly belong here were only seen in one of the samples: 

 Moskenstrommen, 'Vi 1899, 0—100 m. 



T. caiupamila (Kurd.) Dad. 



CIV. .louiiiiNsEN L. 90, p. 21 and p. 42. 



Only in two samples and only singly, 1900: Tranodybet "/s, 

 0— (100 m. and the Skjærstad Fiord II -'/i, 0— IHO m. 



Distribution: Frequent on the west coast of Norway, but 

 seldom numerous. Also known from the Mcditei'ranean, the North 

 Sea, Skagerack, the Baltic ami the r.erniudas. In August 190.3, 

 numerous in the English Cliannel (L. is. 1903—190-1, nr. 1). 

 According to Cleve, it is hai-dly found in the open sea. Undoubt- 

 edly a temperate, neritic species. 



C'odonc'lla Hck. 



C. ventricosa (C\.i 



Lachm.) Fol. 



Only once observed: Tranodybet --"A 1900, (j— (iOO m., rr. 



Distribution: Neritic species, northern temperate. Probably 



the southei'n form (from the Mediterranean) is different fi-om the 

 northern one. 



C. lageiiula (Clap, et Lachm.) Entz. var. ovata .Jørg. 



(Pi. xvm, fig. 117). 



Is probably specifically different from the species which is 

 considered to be the main one. 



Rare and scarce. 



Distribution: Fi'cquent on the west coast of Noi'way, but 

 always in small numbers. Most probably a temperate form. The 

 principal species, which is very rare in the neighbourhood of Bergen, 

 is, according to Ci-eve (L. 40, p. 10.3) a tropical and southern 

 temperate oceanic form. 



PtychocjlLs urniila (Ci. 



Lachm.) Brandt. 



Cfr. JøBGENSEN L. 90. p. 18. 



The principal form (a major Jørc;. I. c.) not fie(|uent. ahvays 

 iu small numbers. 



Distribution: More frequent on the west coast of Norway. 

 Neritic form, which appears to be less northerly than the foUomng. 



V. minor Jouo. 



•Jørgensen 1. c.^ p. 19, pi. 1, f. 9. 



Frequent, sometimes numerous. 



Distribution: Most probably a northern temperate and boreal, 

 neritic species. Is found all the year round, more or less numerous, 

 on the west coast of Norway. 



T. digitalis Auriv. 



P. Drygalskii Brandt L. 1(1 p. 59, pi. 3, f. 14. Cfr. Jør- 

 gensen L. 92, p. 17. 



Very rare and scarce, 1899: The Vest Fiord I, '7i, 0—180 m.; 

 Ofoten II, V2, 0—100 m. and 250—200 m.; Rombaken, V2, 0—40 

 m.; Rombaken II, Vs, 0—100 m.; Tranodybet, '«A, 0—50 m.; 

 Henningsvær, -%, 0—280 m.; Hola, Svolvær, Vs, 0—150 m. 



Distribution: Seems to be an arctic neritic and (boreal?) 

 oceanic form. Known from Greenland, the Labrador Current, Jan 

 Mayen and the sea between Jan Mayen and Tromso. The closely 

 related P. obtusa Brandt, which is considered bv Cleve also to 



