FOE WHICH ANATOMICAL DATA AEE OBTAINABLE. 



S. miniata 



(from 3 British 

 specimens). 



S. ornata 



(from 2 British 

 specimens). 



Anatomical Data given by Messrs. s. sphijrodefa 



Dixon, Proc. 1y. Dubl. Soc, 1888-9, etc. ,c ox> •*.- u 



' ) 5 (from 3 British speci- 



• mens). 



S. nivea. 



S. vennsta. 



Orange. Pale below, Buff, pale at base. Pale brown with Upper half buff to 

 dark chocolate with numerous white lines. brown, lower half 



above. lonsitudinal Hnes. paler with faint 



white stripes. 



Centre oUve to 

 orange whitish 

 radial Imes. 



Umber to purple- 

 brown. Yellow 

 radial hnes with 

 white spots be- 

 tween. 



Tapering. 



Difficult to esti- 

 mate. Probably 

 in 6's. 



Either 20-|-20-f40 

 = 80, or6+ 64-12 

 -f 244-48=90. 



One or two pairs 

 of directives. 



One or two grooves. 



Strong. 



E. thinner than 

 mesoderm. 



Around summit of 

 column, oval. 



A few cmclides, 

 open on some of 

 iiiQ warts. 



Mesogloeal, strong 

 at the top, dimin- 

 ishing down- 

 wards, projec- 

 tions into the 

 endoderm. 



Short, with obtuse 

 tips. 



64-64-124-244-48 

 =96. 



64-6+124-244-48 

 = 96. 



2 pairs of directives, 



Two grooves. 



Weak. 



E. twice as thick as 

 mesoderm. 



Numerous on the 

 ujipcr half. A few 

 cincUdes, open 

 on some of the 

 warts. 



White to olive. 



Varying shades of 

 orange. 



Tapering. Outer Tapering. Outer 

 cycles may be ' cycles may be 



reduced to pa- 

 pUlse. 

 64-64-124-244-48 

 4-96=192. 



6-h6-hl2-K 24=48. 

 1 pair of directives. 



One groove. 



Moderate. 



M. thicker than E. 



On upper half, some 

 on upper third 

 i:)erforated by 

 cinchdes. 



Mesogloeal, not so 

 broad at top as 

 in S. sphyrodeta. 



reduced to pa- 

 pillae. 

 64-6+12+24+48 

 +96=192. 



6+6+12+24 + 48 

 = 96. 



1 pair of directives. 



One groove. 



Strong. 



M. irreg. thicker 

 than E. in many 

 places. 



On upper half, 

 some on upper 

 third are perfor- 

 ated by cinclides. 



White with duU 

 drab stripes, 

 some varieties 

 yellow. 



White, sometimes 

 yellow, with 

 radial lines. 



Short and stout, 

 thickened to- 

 wards the base. 



8+8+16+32=64. 



Either 5 

 or 6- 

 = 48. 

 I pair of directives 



-5+10=20, 



6+12+24 



One groove. 



Weak. 

 Mesoderm thin. 



Few, found on 

 upper part of 

 column, perfor- 

 ated by cinclides. 



Mesogloeal, fairly 



broad at top. 



