490 REVISION OP THE AXINELLID^, i., 



Plate xxiv. 



Fi<^. 1. — Trachyclailuji rtteporoftus, sp.nov., (var. ''.); R.N. 1061; { x i). 



Fig.2. — T. reteporosu.s, sp.nov., (var. ?); R.N. 42(5 (a specimen in which the 

 dermal pores could not lie seen); ( x i). 



Fig.3. — T. rtfeporom.s, sp.nov., typical form; one-half of a (desilicified) 

 longitudinal median section of a branch of the type-specimen, show- 

 ing the deiinal layer (in part torn away), subdermal spaces, excur- 

 rent and incurrent canals, flagellated chambers, and (on the left) 

 portion of the axial skeleton; ( x 18). 



Plate XXV. 



Fig. 1. — Trachpcladns reteporosus, sp.nov., (var. ?); longitudinal median 

 section of the skeleton; ( x 10). 



Fig.'i. — T. di(/itat>is Lendenfeld, var. claratiis, var.nov. ; portion (slightly 

 less than one-half) of a transverse section of a branch, showing the 

 arrangement of the flagellated chambers, etc. ; ( x 18). 



Plate xxvi. 



Fig. 1. — Tfachycladw rtttporo/^ux, sp.nov., (typical form); longitudinal 

 median section of the skeleton, showing the pattern of the axial 

 fune; ( x 10). 



Fig.2. — T. digitatn-^ Lendenfeld, (typical form); portion of the surface 

 (from part of which the dermal membrane has been pared off) 

 showing the disposition of the dermal pores, and also of the main 

 incurrent canals; ( x 6). 



Fig.3. — T. di(jit,atu>< var. HtrongylatiiK, var.nov.; portion of the surface, 

 showing the arrangement of the dermal pores and the character of 

 the oscula; ( x fi). 



Fig. 4. — T. ref eporo.in>i, up. nov.; portion of the surface, showing the arrange- 

 ment of the dermal pores; ( x 6). 



Fig.o. — T. pasfn/ofiii.'^, sp.nov. ; portion of the surface, showing the arrange- 

 ment of the dermal j^ores; ( x 6). 



Fig. 6. — T. diijitatHS \-AV. stron<jylatiis, var.nov.; portion of the surface, 

 showing the arrangement of the dermal pores; ( x 20). (From a 

 drawing). 



Fig.7. — T. reteporoxiis, sp.nov., (tj'pical form): portion of the surface, 

 showing the arrangement of the dermal pores; ( x 30). (From a 

 drawing). 



Fig.8. — T. pnsfii/oxus, sp.nov.; portion of the surface, showing the arrange- 

 ment of the dermal pores; ( x 30). (From a drawing). 



Fig.9. — 7'. digitafiis hendenteld, var. <jracUix, var.nov.; moderately thick, 

 transverse section of a branch; ( x 18). 



