KO 



NGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 25. N:0 2. 137 



RR 5. Their height up to the bottom of the facet is 4 mm.; their greatest width 

 is 5 mm. The articular facet is 3 mm. wide; it is horseshoe-shaped when not worn down, 

 and lies at about right angles to the slope of the radial. There is no distinct fulcral 

 ridge, but the snrfaee is radiately striated, especially at the edges. In a the axial canal 

 is not separated from the ventral groove; hut in l> and c it lies in the middle of the 

 facet and is separated from the groove. 



The Arms are not preserved; but in the small specimen IBr, still exists; it is low 

 and not axillary. 



Anal structures: x is hexagonal, and has a slight median ridge in connection 

 with the axial folding. It must have supported three plates, and, seen from above, the 

 side that supported the middle one of these looks rather like an articular facet (lig. 220). 



The St em is not preserved in a, but in /> and c there are a few ossicles. These 

 alternate in height and width, have a pentagonal or quinquelobate lumen of considerable 

 size and radiating striae on their articular surfaces (tig. 219). 



Notes on Angelin's figures: 



Tab. XIX, tigs. 9, 9 a. These two drawings are obviously of the same specimen, 

 and not of different specimens as stated in the explanation to the plate. A ny doubt as 

 to this is dispelled by the legend attaehed to the MS. drawings. The tigures are good 

 on the whole, but, at least in the copies I have seen, too faint to show the axial folding 

 distinctly. The infrabasals are not quite correctly rendered. 



Locality: That of a is unknown; but b and c come from bed c between Wisby 

 and Weskinde. Not known out of Gotland. 



Cyathocrinus Dianse n. sp. 



(Plate VII, figs. 222—223.) 

 Diagnosis. 



Dorsal cup broadly expanding with straight sides; height \l., width; ornamented 



with radiating wavy lines of delicate granules. All plates wider than high. RR almost 



lunulate. IBi-j very small and crescentic. Arms fairly stout. Stein round, with low 

 ossicles alternately ridged. 



The type of this is a specimen from the Windrnill Hill at Slite, in a reddish lime- 

 stone belonging to bed f; it possesses 7 mm. of stein and a portion of the r. post. arm. 

 Another specimen from the same locality appears referable to this species; it is only a 

 dorsal cup. The following description is based entirelv on the type specimen. 



Description. 



Dorsal cup broadly expanding, with straight sides. It is 7 mm. high; B. 5 min. 



wide at the base; 14 mm. wide above. The sides make an angle of about 32° with the 



K. Sv. Vet. Akad. Ilundl. Band ■>;"). N:o 2 18 



