﻿SPONGES. -KALLMANN. 



201 



densely packed that the fibre 

 becomes practically a fused 

 mass of acanthostyles. I'he 

 acanthostyles are stout in pro- 

 portion to their lenijth and are 

 furnished with large and 

 numerous spines. The prin- 

 cipal and auxiliary styli are de- 

 void of any basal enlargement 

 or reduction ; the latter are oc- 

 casionally, the dermal stvli 

 usually, basally spined. The 

 greatest dimensions of the spi- 

 cules are : — 



Megasclc res . — 



(i.) Principal styli, 240 x 

 12 ;(. 



(ii.) Accessor}- stxli, 300- 



32,0 X 9 ;<. 

 (iii.) Dermal st\li, usually 



less than 130 x 4.5 \i. 

 (i\-.) Acanthost}ies, 50-68 



/( long, and up to 8.5 



H in diameter. 



Microsclcres. — 



(i.) Larger chela', 15-20 // 

 long. 



(ii.) Contort chelae, attain- 

 ing to I I n in length. 



(iii.) r o x a : observed 

 lengths, 55-260 ]i. 



Loc. — Bass Strait, East 

 Coast of Flinders Island. 

 ("Endeavour. ") 



RlIAPHIDOPHI.US TVPICIS, ViU. 



FAVOsus, Whitdegge. 

 (Text-tig. 42.) 



This variety, which is so far 

 known only from a few frag- 

 mentary specimens, is well dis- 

 tinguished from the others by 

 (i. ) its long slender cylindrical 

 branches which do not exceed 



Fig. 42 — A', typicus var. favo- 

 SHS. a Principal styli. b Aux- 

 iliary styli. c Special dermal 

 styli, d Acanthostj'li. e Chelae. 



