264 



Fig. 14. — Sigmaxinella arborea : a, a ', styles ; b, strongyle ; c, 

 oxea ; <i, rhaphides — all x 80; d' , d", rhaphides, x 730; 

 e, sigmas, x 730. 



Fig- ^5- — Biibaris reptans : a, vertical section, x 6; b, style, 

 X 80 ; c, tyles, x 80. 



Fig. 16. — Clathria mollis: a, spined style, x 80 ; a', the same, 

 X 420 ; b, dermal oxea, x 80 ; b', the same, x 420 ; c, 

 sigma, x 730 ; d, d' , tridentate isochele, side and front 

 view (the web extending from tooth to shaft, not from 

 tooth to tooth), x 730, 



Fig. 17. — Siylostichon invohitiini : a, vertical section showing 

 plumose columns and superficial layer of tufts of oxeas ; 

 b, central styles, x 80 ; c, echinating styles, x 80 ; d, 

 dermal oxea, x 80 ; e, sigma, x 730. 



Fig. 18. — Histoderma nataletise : a, amphitylotes, x 80 ; 6, 

 acanthoxea, x 80; b' , the same, x 200; c, sigma, 

 X 730 ; d, tridentate isochele, side view, x 730 ; e, 

 spined, coiled and cruciate spicules, x 730. 



Fig. 19. — Phlceodictyon eiimitmn : a, network of skeletal fibres, 

 x 5 ; 6, oxeas, x 80. 



Fig. 20. — Hircinia arbuscula : main fascicle and web-like net- 

 work, X 50. 



Published 2ist July, 1903. 



