670 EXPLANATIOlf OP THE PLATES. 



Serpulid or Vermetus-sheil, and forms several roots.] Ee- 

 duced to one third nat. size. 



Fig. L. lotrochota pii/rpwrea. A small but symmetrically developed 

 dry specimen from Torres Straits or its neighbourhood. 

 Nat. size. 



M. /. hacuUfera. Portion of type (spirit) specimen on stone, 

 from Port Darwin, between tide-marks. Nat. size. [Th§ 

 small pointed conuli are not quite so well marked on 

 this as on the reverse side of the specimen.] 



N. Schmidtia variabilis. The greater part of the type speci- 

 men (spirit), from Port Darwin,, 7-12 fms. [Seen from 

 the side, the^true base is towards the right-hand margin of 

 the plate.] Beduced to two thirds nat. size. 



0. Fellina aliformis. The type specimen (in spirit), from Port 

 Darwin, 7-12 fms. Seen from one side, one wing almost 

 concealing the other. Nat. size. 



Plate XL. 



Fig. A. Echinodicfyum glomeratvm. Type specimen (dry), from 

 Thursday Island, Torres Straits, 4-5 fms. Nat. size. 



B. Pachychalina niacrodacti/la, portion, including the second 



and third bifurcations above hase, seen from the front. B'. 

 Apex of branch from front, slightly inclined to one side 

 to show lateral series of vents. Prom dry, somewhat 

 macerated, specimen from Friday Island, Torres Straits. 

 Nat. size. 



C. Amphitectus Tiispidulus. The greater part of the type (dry) 



specimen; the real base is on a shell (omitted) to the left. 

 From Thursday Island, Torres Straits, 3-5 fms. Nat. 

 size. 



D. Eehinodictyum cancellatwm. The lower part (about half of 



the whole) of the type (dry and macerated) specimen, 

 from Warrior Eeef, Torres Straits. One third nat. size. 



