KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 25. N:<> 2. 199 



Plate X. 



GiSSOCririUS (continued). 



G. inCUrvatUS (continued). 



Fig. 337. Specimen 128 RM., one of Angelin's types; from below. IBB wanting. (p. 169.) 



Fig. 338. Same specimen: articular facet of radial, showing ventral groove, axial canal, transverse ridge 



and covering-plates. (p. 169.) 

 Fig. 339. The ventral surface of another of Angblin's types. Shows deltoids, madreporite witli pores, 



and ambulacra. The lumen of the anal tube is not seen as is usually the case in crinoids 



seen from tliis side, because the tube passes out at right angles to the crown. (p. 170.) 

 Fijjr. 340. Part of the ventral surface of another of ANGELIN's types, worked out by Mr. G. LILJEVALL. 



Shows the rugose surface of the madreporite and the absence of an v plates in the actinal 



centre that could possibly be considered as orals. (p. 170.) 

 Fig. 341. Another specimen; part of the crown from below, wanting IBB. (pp. 109, 170.) 

 Fig. 342. An almost complete specimen. on matrix; showing stem, root and ventral sac. (pp. 169, 170.) 

 Fig. 343. Same specimen; brachials from the back, showing ornament, (p. 170). 

 Fig. 344. Same specimen; brachials from ventral surface. showing covering-plates, of which the distal 



halves are bent imvards. Compare Figs. 346 and 349. (p. 169.) 

 Fig. 345. Same specimen; brachials from the side, showing proximal halves of covering-plates. The back 



of the upper brachial has been broken otf and the axial canal exposed. (p. 169.) 

 Fig. 346. Same specimen; sectiou of arm. showing ventral groove, not separated from axial canal, and 



covering-plates, of which the distal halves are bent inwards. Compare Fig. 344. The struc- 



tures in the interiör of the ventral groove, which are alluded to in the text as inner plates. 



are probably only infilling calcite crystals. (p. 169.) 

 Fig. 347. Same specimen; columnals, which in lower part of drawing show curious irregularity. (p. 170.) 

 Fig. 348. Same specimen; portion of the ventral sac, to show arrangement of plates and absence of 



pores. (p. 170.) 

 Fig. 349. Same specimen as Fig. 340; section of arm. Compare Fig. 346. (p, 169.) 

 Fig. 350. Same specimen; covering-plates from the side. (p. 169.) 

 Fig. 351. Another specimen; part of a single arm, to show extent of coiling. The other arm-fragments 



on the same piece of matrix are only outlined, to avoid confusion. (p. 169.) 



G. verrucosus (p. 17 1). 



Fig. 352. A specimen seen from 1. post. radius; .v is a little out of place, owing to the compression of 

 the specimen. (p. 171.) . 



Fig. 353. Same specimen; from r. ant. radius In this and the former figure the relations of the tegmen 

 to the ventral tube, arms and cup can be distinguished. 

 Same specimen; a radial, with faret slightly worn. (p. 171.) 

 Same specimen; articular surface of a columnal. (p. 172.) 



Same specimen: part of distal end of ventral sac. Compare Fig. 369. (p. 172.) 

 Same specimen; section of a III Br, showing ventral groove, covering-plates, infilling calcite 

 and axial canal. (p. 172. where the infilling is wrongly alluded to as inner plates.) 

 Same specimen; section of a V Br. (p. 172.) 



-Mine specimen: analysis of dorsal cup. The r. post. and r. ant. IBB have fused, producing 

 4 IBB in different positions to Fig. 360. In the text. the number of IBB is said to be 3, 

 and it may be so in some cases. 



Fig. 360. Another specimen; analysis of dorsal cup. Here the ant. and 1. ant. IBB have fused, pro- 

 ducing 4 [BB in different positions to Fig. 359. 



Fig. 



354. 



Fig. 



355. 



Fig. 



356. 



Fig. 



357. 



Fig. 



358. 



Fig. 



359. 



