274 ANATOMY AND PHYSIOLOGT 



Fir. 



274. Smooth solid siliceous fibre. From McAn- 



drewsia. Gray. X 175 linear. Pages 13, 79, 

 and 204. 



275. TUBERCULATED SOLID SILICEOUS FIBRE. 'EvOm Ductl/lo- 



cffl/ya?jOK?mcea, Stutchbury. X 108 linear. Pages 

 79 and 204. 



276. TuBERCULATED SOLID SILICEOUS FIBRE, Very promi- 



nently tuberculated. From Bactylocalyx Prattii, 

 Bowerbank, MS. X 175 linear. Pages 80 and 

 204. 



277. Simple fistulose siliceous fibrEj spinulated. 



From Farrea occa, Bowerbank, MS. X 108 

 linear. Pages 13, 80, and 204. 



PREHENSILE FIBRE. 



278. CiDARATE PREHENSILE FISTDLOSE SILICEOUS FIBRE. 



From a parasitical siliceo-fibrous sponge from the 

 south sea ; showing the position of the prehensile 

 organs at the base of the sponge. X 83 linear. 

 Page 80. 



FIBRILATED FIBRE. 



279. FiBRiLATED SPONGE FIBRE. From the skeleton of one 



of the sponges of commerce. X 308 linear. 

 Page 73. 



280. FiBRiLATED SPONGE FIBRE. From one of the rigid 



Australian sponges, x 175 linear. Page 73. 



CELLULAR TISSUES. 



281. A group of cells on a piece of an interstitial membrane 



from Ecionemia acervus, Bowerbank, MS. X 660 

 linear. Pages 81 and 88. 



282. Cells on a portion of the interstitial membrane of 



Halichondria nigricans, Bowerbank. X 308 linear. 

 Pages 82 and 88. 



