518 DK F. A. BATHER. 



Plate III. 



Cothurnocystis Elizae, §§ 170-207. 

 (AH the specimens are in Mrs Gbay's Collection.) 



Fig. 26. G 26. Reverse face. A small but almost complete individual. Frame-marginals with knobs, 

 strut, tag, tongue, and toe-spine well shown. Cf. text-fig. 14. Nat. size. 



Fig. 27. G50. Obverse face. Hoods of subvective grooves projecting. Stem bent heelwards (§§ 192, 

 195, 206). x2 diam. 



Fig. 28, Holotype, G 6. Reverse face. Composition of frame, strut, and proximal region of stem (text- 

 fig. 20) well shown. On the right the interior of the integument on the obverse face is exposed, showing 

 some subvective grooves from within (§ 197). Nat. size. 



Fig. 29. G 267. Reverse face. Stem well preserved, bent toewards (§ 206). Nat. size. 



Fig. 30. G 22. Reverse face. Upper portion of the leg, showing tag and tongue processes (§§ 189, 190), 

 and their relation to the marginals. Between them is seen peeping up the end of the vent (§ 199). 

 Compare fig. 38, which is the obverse of the same specimen. Nat. size. 



Fig. 31. G45. Obverse face. To the left the subvective system is clearly exposed (§ 195). To the 

 right of this, aud continuing along the heel and up the back of the leg, the integument of the obverse face 

 has been removed, exposing part of the strut, the inner channel of marginals 5, 4, and 3, the broad inner 

 face of marginal 12 (§ 187), and the inner surface of the reverse integument, wherein the plates are seen to 

 be larger than those of the obverse (§ 192). For this excellent photograph, I have to thank Mr F. W. 

 Reader, x 2 diam. 



Fig. 32. G 27. Part of the stem. Some dimeres of the proximal region above ; then a weathered 

 reducing i^iece, with fluted infilling ; and below, weathered columnars of the distal region, down which the 

 fluting is continued (§§ 202, 203). x 2 diam. 



Fig. 33. G17. Obverse face. Part of subvective system, from an individual with relatively short 

 grooves; the cover-plates preserved (cf. text-fig. 16). x 4 diam. 



Fig. 34. G52. Obverse face. The whole of the subvective system, from an individual with relatively 

 long grooves ; the cover-plates preserved (§ 198). x 4 diam. 



Fig. 35. G36. Reverse face. The integument of this face is removed, exposing the inner surface of 

 the subvective system, which has relatively long grooves as in fig. 34 (§ 198). Cf. text-fig. 17. The 

 grooved inner surface of some proximal columnars is also shown (§201). x 2 diam. 



Fig. 36. G 10. Reverse face. The inner face of part of the subvective system is exposed as in fig. 35 ; 

 but here the grooves are relatively short (§ 198). Cf. text-fig. 18. The lumen of the proximal regio^of 

 the stem is exposed (§ 201). x 6 diam. 



Fig. 37. G 41. Reverse face, showing imbrication of the integument plates (§ 192). x 3 diam. 



Fig. 38. G 22. Obverse face. The top of the leg, showing the elongate converging plates of the vent, 

 between the tag and tongue processes (§ 199). x 2 diam. 



