CARADOCIAN CYSTIDEA FROM GIR7AN. 517 



Plate II. 



Dendrocystis scotiea, §§ 127-149. 

 (All the specimens are in Mrs Gray's Collection.) 



Fig. 10. G 120. Obverse face. Shows brachiole, partly twisted on its axis, antibrachial process, vent, 

 and proximal region of stem. Nat. size. 



Fig. 11. Holotype, G80. Obverse face. Shows brachiole, antibrachial process, vent scarcely dis- 

 tinguishable, slight basal rim, and proximal columnars. The cordate outline of the theca is clear, though 

 the adanal lobe is broken away. Nat. size. 



Fig. 12. Holotype, G 80. Reverse face. In this the brachiole is not preserved. Some elongate plates 

 of the vent can be made out, to the right of the stem. Nat. size. 



Fig. 13. G82. Reverse face showing the large antibrachial process on the left, and part of the 

 brachiole on the right. Nat. size. 



Fig. 14. G87. Obverse face. Part of the brachiole, supported on a platform of adbrachial plates. 

 The lined appearance of the brachiole is not due to retouching the photograph, but to the rubbing of colour 

 into the sutures on the squeeze itself. x 2 diam. 



Fig. 15. G73. Part of the brachiole, and on the right, some adbrachial plates. This shows one series 

 of long plates, and two series of short plates (§ 63). x 2 diam. 



Fig. 16. G126. Part of the brachiole, showing the folded edges of one series of brachiolars, and the 

 inner ridged surface of others (§ 66). x 4 diam. 



Fig. 17. G 162. Part of the brachiole, and, on the left, some adbrachial plates. The long brachiolars 

 in the upper row imbricate distalwards (§ 138). x 2 diam. 



Fig. 18. G 85. Proximal part of the brachiole, with adbrachial plates on the left. The mode of 

 preservation of this specimen rendered it possible to take two squeezes : (a) showing the outer surface, with 

 the longer plates in the lower row, and the shorter plates in two rows above it ; (6) the lumen exposed by 

 the removal of some plates ; the elements on the right retain the position they occupy in fig. a. The 

 remarkable tenuity of the longer plates and the relatively large size of the lumen are here obvious (§ 65). 

 x 2 diam. 



Fig. 19. G105. The stem, incomplete, and proximal part of theca. At the proximal end of the distal 

 region the lumen is exposed (§§ 145-148). Nat. size. 



Fig. 20. G 90. Proximal region of stem and theca in two adjacent individuals. Reverse face. In the 

 individual on the left the anal lobe, with the vent, and the antanal lobe are well marked. In this the 

 interior of the stem is exposed, and the great size of the lumen in the proximal region is manifest. Note 

 the flanges on the proximal columnars in the right-hand individual (§ 148). Nat. size. 



Fig. 21. G89. '? Reverse face, with the appearance of valvular anal plates (§ 142), and with knobs on 

 some of the thecal plates (§ 136). In this and in fig. 22, the valvular plates have been picked out on the 

 squeeze itself with a thin coat of white paint. x 2 diam. 



Fig. 22. G266. ? Reverse face, showing features similar to those in fig. 21 (§§ 136, 142). x 2 diam. 



Fig. 23. G88. Reverse face, with the long axis laid horizontally, so as to illuminate the narrow plates 

 of the vent (§ 141). Note the coarse texture of the adjoining thecal plates (§ 133), and their crenellate 

 sutures (§ 55). x 2 diam. 



Fig. 24. G 128. Reverse face, showing basal rim and anal lobe with plates of vent (§ 141). 

 X 3 diam. 



Fig. 25. G102. Reverse face. On the right is the vent with narrow plates converging to it (§ 141). 

 On the left is the proximal region of the stem, with flanged columnar elements (§ 148). x 4 diam. 



