158 T. A. IiATHER, CBINOIDEA OF GOTLAND. 



stem is here {»reserved. The ossicles are round, of about the same height, ciz., 3 mm., 

 but the alternate ones have a strongly projecting ridge (fig. 263). Sometimes everv 4th 

 or 5th ossicle is more pronouneed than the others (tig. 283). The linnen is small. In >c 

 the diameter of the stem is 6.25 mm.; the articular surfaee of the ossicles is radiately 

 striate; the axial canal is slightly quinque-Iobate, and its diameter is 2.4 mm. (tig. 264). 



Notes oi) Angelin's figures. 



Tab. III, fig. 1 cannot be detérmined with certaintv; anyway it is not drawn as 

 »a lat er e anali». 



Tab. III, tig. 2 is the same specimen as Tab. XXIX, tig. 73. It is very considerably 

 restored and is not much like the actual specimen. The specimen was recognised through 

 having a number 2 affixed. 



Tab. III, tig. 3. Much restored; the I BB are absent in the specimen. The smooth- 

 ness of the plates is due to weathering. 



Tab. III, fig. 4 is incorrectly restored, and is magnitied. 



Tab. III, tig. 5 b has not been fonnd, but the IBP) are higher than usunl in this 

 species and are not of natural shape. 



Tab. XX, tig. 20. Same specimen as III, 4. Arms almost entirely restored and 

 much too smooth; in the original they have strong spiny processes at the distal ends of 

 the brachials. The lower plates of the sac are worn away in the original, and the restora- 

 tion is obviously incorrect. The sac itself is very badly rendered. The smoothness of 

 the cup is quite illusory. 



Tab. XXVII, fig. 1 has been composed from 3 specimens as follows, — the figurs 

 is nearly 130 mm. long; divide it by horizontal lines at distances of 60 mm., 75 mm. 

 and 90 mm. from the bottom, and letter the four portions so obtained, from above down- 

 wards, «, fi, y, d. Then cc represents the ends of the arms of one specimen, in y the 

 arms are drawn from another specimen, <) and the ventral sac in y are taken from veta 

 third specimen, while ft is the connecting link evolved by the draughtsman. Parts u ;md 

 y belong to specimens of G. campanula, but d belongs to G. typus. This part is fair, 

 but as the species was here called G. punctuosus, it was thought necessary to represent 

 the ridges as merely granules. 



Tab. XXVII, fig. 1 h. The smooth character of the tube is illusory, since it is due 

 to weathering, and even then the foldings of the plates are more visible than representrd. 

 In the section the number of plates is exaggerated owing to cracks being drawn as sutures. 

 The inner layer of small ossicles is illusory, the appearance being produced solely b)' the 

 infilling calcs})ar, which here, as always, continues the crystalline strueture of the ossicles 

 themselves. 



Tab. XXIX, fig. 73. Arms from III, 2; the small size of some arm-branches is 

 apparently due to recuperation. 



Tab. XXIX, fig. 75 d is somewhat too free. See my Plate VIII, fig. 279. 



Locality: Follingbo, between Follingbo and Endre, and Quarry between Bara and 

 Wallstena (f). Not known out of Gotland. 



