1 9 1 F. A. BATHER, CRINOIDEA OJF GOTLAND. 



Cyathocrinus (continued). 

 C. Dianse d>. 1 37). 



Fig. 222. Unique specimen, from r. post. radius. 



Fig. 223. Same specimen; r. post. II and I Brr, showing ornament and etaaracteristic creseent-shape 

 of plates. 



C. g-laber (p. 138). 



Fig. 224. Specimen figured ANGELIN, Tab. XXIII, tig. 12; from 1. ant. radius. 

 Fig. 225. Same specimen; from post. interradiiis. (p. 139.) 

 Fig. 226. Same specimen; from below. (p. 139.) 



C. muticus (p. i4tt). 



Fig. 227. Type-specimen; from post. interradius. 



Fig. 228. Same specimen; from below. 



lig. 229. The small specimen; from post. interradius. 



C. distensus (p. 141). 



Fig. 230. Type-specimen; the crown, from r. ant. radius. 



Fig. 231. Same specimen; the crown from below. 



Fig. 232. Same specimen; anal area. 



Fig. 233. Same specimen; VII Br or VIII Br from back and side. 



C. longimanus (p. 142). 



Fig. 234. Specimen c. lower part of crown, from r. post. radius. (p. 145.) 



Fig. 235. Specimen a; brachials from side, showing proximal halves of covering-plates, c'. 



Fig. 236. Same specimen; same brachials from ventral surface. c 1 and c- proximal and distal halves 



of covering-plates, whicji in this species are not quite in the same straight line; compare 



Fig. 208. (p. 144.) 

 Fig. 237. Same specimen; a brachial in section; compare with Fig. 213. The chief difference is that c- 



does not pass between the c's of the öpposite side. * denotes the infilling crystals of 



calcite. The ventral groove seems to have a median ridge running along its floor. The 



small pieces i cannot be distinguished. (p. 144.) 

 Fig. 238. Same specimen; some brachials seen from the dorsal surface and partly broken away so as 



to exposé the inner surface of the covering-plates and the infilling calcite *. The articular 



facet of the covering-plates, with its notch, is also seen; compare Fig. 212. (p. 144.) 

 Fig. 239. Specimen b; weathered plates of the ventral sac, from the posterior side, as in Axgelly 



Tab. XX, fig. 7. (p. 144.) 

 Fig. 240. Same specimen; similar plates ground down, showing continuity of suture-lines and absence 



of pores or slits. (p. 144.) 

 Fig. 241. Same specimen; similar plates in which weathering has brought out the internal structure to 



which the radiating ridges are often due and which often produces the aj)pearance of slits on 



the suture. (p. 144.) 

 Fig. 242. Same specimen; plates from the anterior side of the ventral sac, which have not been exposed 



to the weather and are still in the normal state. A comparison of these with the weathered 



plates is very instructive (p. 144). 



C. cfr. longimanus (p. 145). 



Fig. 243. Brachials from side, with covering-plates of the simpler type. The small pieces intercalated 

 between the proximal ends of the covering-plates should have been lettered j. (p. 145.) 



Fig. 244. Brachials with the covering-plates of one side partly dissected away. In this case the distal 

 element of cach covering-plate c 3 hardly appears on the surface at all. but is embedded 

 between ti . 's of the öpposite side. The crystals of infilling calcite are seen as before. 



Fig. 245. Brachials seen from ventral surface. with covering-plates of more specialised type, in which 

 the c-s and c 3 s are greatly redueed in proportion to the ch. This particular pieee does 

 not, however, clearly show how, as stated on p. 145. the c's may meet one anothcr by their 

 corncrs. The covering-plates are broken off in the upper part of the drawing and the infilling 

 calcite is exposed (p. 145.) 



Fig. 246. A brachial with covering-plates of the simpler type. Lettering as in Fig. 244. 



Fig. 247. Section of a brachial for comparison with Figs. 237 and 213. Lettering as before. (p. 145.) 



