FROM A DREDGING IN THE WEDDELL SEA. 
713 
Fig. 39. S. atlanticus. Transverse section at a low level, with rooting processes (a, b, c) surrounding 
the cup. (Slide S. 33a (2), x 9.) 
Fig. 40. S. atlanticus. Transverse section of cup at a higher level than in last figure, a, rooting 
process attached to the cup. (Slide S. 35a (2), x 9.) 
Fig. 41. S. atlanticus. Transverse section of same cup as figured in last two photographs, but cut at a 
still higher level. (Slide S. 36a, x 9.) 
Fig. 42. S. atlanticus. Longitudinal section of cup to show pores on inner wall and septa, a and b, 
pores on inner w;all. See also text-fig. la. (Slide S. 41, x 9.) 
Fig. 43* Syringocnema gracilis. Transverse section of small cup. p, p, p, pores on pyramidal papillae 
of outer wall; w.p., pores on wall of tube. See also text-figs. 16, lc, and Id. (Slide S. 112, x 12.) 
Fig. 44. S. gracilis. Transverse section of fragment of large cup. a, apparent vesicular tissue near 
inner wall due to the inner ends of the tubules bending downwards. See text-fig. lc. (Slide S. 118, x 10.) 
Fig. 45. Longitudinal section near outer wall. On the left the pores on outer wall are visible ; on the 
right the tubules are cut further in towards the interior, and thus appear wider in the lumen. (Slide S. 120, 
x 10.) 
Fig. 46. S. gracilis. Oblique longitudinal section of small cup. a, tubules in longitudinal section. 
(Slide S. 112, x 10.) 
Fig. 47. S. gracilis. Tangential section through tubules. Section from same specimen as fig. 44, but cut 
perpendicular to the direction of the latter. (Slide S. 121, x 10.) 
Fig. 48. S. gracilis. Transverse section near the base of small cup Interior filled by coralloidal 
growth, w.p., pores on walls of tubules. (Slide S. 108, x 10.) 
Plate V. 
Fig. 49. Syringocnema gracilis. Weathered surface showing tubules in section. (Slide S. 115, x 8.) 
Fig. 50. Goscinocyathus fidtus. Weathered surface on outside of block. This specimen was cut up 
into sections in various directions and the surface therefore destroyed, t, tabulae ; i.w., inner wall with 
pores, x 5. 
Fig. 51. G. endutus. Transverse section near apex of cup. The characteristic investing lamellae are 
very well developed. Septa at this level six in number. (Slide S. 31a, x 26.) 
Fig. 52. G. endutus. Section at a slightly higher level. The investing lamellae are spreading out and 
anchoring the cup to surrounding objects. (Slide S. 66, x 9.) 
Fig. 53. G. endutus. Section above that of fig. 52. It becomes oblique at the top, and the pores of 
the inner and outer walls are visible, a, bundle of fixation-lamellae. Interior of cup filled by coralloidal 
growth. (Slide S. 67, x 9.) 
Fig. 54. C. endutus. Oblique longitudinal section of outer wall. The wall has disappeared, but the 
porous character is preserved by the dark matrix. See also PI. I, fig. 1. (Slide. S. 55, x 9.) 
Fig. 55. G. endutus. Longitudinal section of outer wall to show porous character. (Slide S. 98, x 9.) 
Fig. 56. C. endutus. Transverse section through septum illustrating the irregular perforations ; from same 
specimen as shown in PI. I, fig. 1. (Slide S. 99, x 28.) 
Fig. 57. G. endutus. Longitudinal section through a septum to show the pores. (Slide S. 27, x 9.) 
Fig. 58. G. endutus. Oblique longitudinal section through cup. Irregular spacing and course of septa 
well shown. I , fixation-lamellae ; a, transverse section of cup of Protopharetra polymorpha. (Slide S. 53, 
x 5-5.) 
Fig. 59. G. endutus. Longitudinal section through cup. The internal coralloidal tissue is particularly 
well exhibited. I, fixation-lamellae, (Slide S. 53, x 10.) 
Plate YI. 
Fig. 60. Coscinocyathus fultus. Transverse section of cup. a, 6, rooting processes ; p, p, external 
boundaries of successive series of fixation offsets ; t , tabula ; c.t., coralloidal tissue in central cavity. (Slide 
S. 153, x 9.) 
TRANS. ROY. SOC. EDIN., VOL. LII, PART IV (NO. 27). 110 
