90 F. A. BATHEH, ÖRIN* >II>K,A ()F GOTLAND. 



against the ridge of the ana] plates. The axil-arras are proved by dissection to follow 

 the same law of branching as in the previous species, hut from the exteriör onlv the large 

 ad anal armlets can be seen: these abnt elosely om one another and on the 1. ant. arm, 

 and the sides of the ossicles are faised into little sharp ridges. The backs of the ossieles 

 raay be rounded and somewhat flattened; the latter is especiallv the ease on that part ot 

 the arm that closes över the anal tube; a.long this median line the arms meet elosely, so 

 that the external surface of the elosed crown appears completely plated över. The abanal 

 portions of eaeh axil-arm, which it will be remembered inclnde what is really the main 

 steni of eaeh axil-arm, are, in the elosed state, elosely pressed one against the other inside 

 the crown and are still further diminished in size. Their borders appear marked with 

 pits or slight serrations (figs. 106, 107): these appear to have been produced by the pres- 

 snre of the covering-plates belonging to the onter portion of the arm, and are the firsl 

 indication of such striictures noticed in the Calceocrinidae. 



Ornament: The shagreen appearance is very slight indeed. 



Stem: 13 proximal ossicles are preserved, which reach a length of 7.5 mm. and 

 gradually increase in height distalwards. The stem is slightly curved, witli the concave 

 side towards the crown and the height of the ossicles is greater on the outer than on the 

 inner curve. The distal ossiele is just över 1 mm. high, with a diameter of about 2. G 

 mm.; this is proportion ately higher than the corresponding ossiele in previous species. 

 The sagittal ridge is well marked. 



This species was not figured by Angelin. 



Locality: Follingbo (f). Not known out of (rotland. 



Beside specimens a and />, I refer here, with slight doubt, a tnuch worn speeimen 

 from Follingbo, a. less hopeful speeimen from Tjelders in Boge (f), and a cup recently 

 found by me at Galgberget, Wisby (f). 



Calceocrhms cfr. tenax. 



(Plate III, fig. 116.) 



A speeimen from Sandarfve Kulle, from beds somewhat higher than those at Fol- 

 lingbo, represents a further development along the lines of C. tucanus and C. tenax. ln- 

 fortunately only the arms are preserved; there appear to be six, tive together and one 

 lying aslant. All are so mueh of a size that it appears impossible to tell which belongs 

 to the 1. ant. radius, and which are merely axil-arms. They are slender and very straight, 

 tapering gently towards the distal end; their backs are rounded, and they look very like 

 a bundle of walkingsticks, or, to be more dignihed, a betors fasces. In the middle region 

 the ossicles are half as long again as wide, and the diameter grades from 3 mm. to 2 mm. 

 in a lensth of 2ö.5 mm., in the course of which there are about 8 1 . ., ossicles. The sutures 

 between some of the ossicles, perhaps the alternate sutures, are verv faint, and the union 

 was possible sv/vgial. No trace whatever of lesser branches can be detected. 



