344 Messrs. S. O. Ridley and A. Dendy on 



millim. ; (3) slender biliamates, size about '09 by '0032 

 niillim. 



Locality. Station 147, between Prince Edward's and Crozet 

 Islands, 1600 fatli. 



Genus Teochodeema*, n. g. 



Acuate skeleton-spicules and inequianchorate flesli-spicules 

 of the Cladorrliiza-tj-pe ] also the characteristic spicules of 

 the genuSj consisting each of a long straight shaft with (usually) 

 five equal teeth arranged in a star at each end. 



Trochode7'ma mirabile^ n. sp. 



Sponge of the Crinorrhiza-^oxva. Consisting of a conical 

 body with concave lower surface. Margin fringed with 

 numerous (thirty or forty) very long sjHcular processes, pro- 

 jecting outwards and downwards. From the centre of the 

 lower surface depends a long slender root-like process. The 

 summit of the body is produced into a papilla bearing nume- 

 rous, very short, slender spicular processes. Diameter of 

 body 5 inch. Spicules: — (1) straight, slender acuates, which 

 may attain a length of over 3i millim. ; (2) tridentate equi- 

 anchorates of the usual CladorrInza-tj\)e, length about '038 

 millim. ; (3) bihamates, with the ends produced into slender 

 whip-like processes, length '076 millim. f ; (4) large spicules 

 with stout, straight, cylindrical shaft, and a rosette of usually 

 five teeth at each end, length up to '23 millim. These spi- 

 cules form a dense layer incrusting the body. 



Locality. Station 291, South Pacific, depth 2250 fath. 



Genus Chondeocladia (Wy. Thomson). 



Usually of symmetrical external form. Skeleton-spicules 

 acuate to spinulate. Characteristic flesh-spicules equiancho- 

 rates, with curved shaft expanded laterally near each end, and 

 with three or more teeth at each end. 



Cliondrocladia stijjitataj n. sp. 



A spherical head perched on the end of a long stalk. Dia- 

 meter of head about g inch, length of stalk 1 inch, attached 

 at the base. Pale yellow. Soft, liispid. Spicules: — (1) long, 

 sharp-pointed, fusitorm spinulates, with very faintly marked 

 heads, size up to 2*2 by '038 millim. ; (2) large equiancho- 

 rates with curved shafts bearing five prominent claw-like 



* rpoxos, a wheel ; 8epiJ.a, the skin. 



t Tlie length of bihamate spicules is always measured from bend to 

 bend. 



