250 ANATOMY AND PHYSIOLOGY 



FIG. 



136. TORQUEATO-BIDENTATE INEQUI-ANCHORATE. X 308 



linear. From an un described species of sponge. 

 Freemantle, Western Australia. 



137. BIDENTATE INEQUI-ANCHORATE. X 660 linear. 



From an undescribed species of sponge from the 

 coast of Sicily. Page 46. 



138. PALMATED INEQUI-ANCHORATE. From an unde- 



scribed sponge. X 660 linear. Having the distal 

 termination largely developed in the form of a 

 cordate palm, while the proximal end is produced 

 to a much less extent, is compressed laterally, and 

 has the terminal point expanded into a short broad 

 tooth. Pages 46, 47. 



1 39. DENTATO-PALMATE INEQUI-ANCHORATE, from Spongia 



lodata, Montagu ; Isodictya lobata, Bowerbank. 

 X 1 060 linear. Having the distal spatulate palm 

 produced to the extent of about half the length of 

 the spiculum, while the proximal one is developed 

 in the same form to only about one-fourth the 

 length of the spiculum, and having the apices of 

 the hami produced beyond the extremities of the 

 palms, each in the form of a short obtuse tooth. 

 Sponge in the collection of Professor Grant. 



140. TRIDENTATE EQUI-ANCH ORATE. X 660 linear. 



Having each termination equally and fully de- 

 veloped, in the form of two lateral and slightly 

 palmate, and one central attenuated tooth. From 

 an undescribed sponge in the collection of Mr. 

 George Shadbolt. Page 47. 



141. DENTATO-PALMATE ANGULATED ANCHORATE. X 1060 



142. linear. I have found this form of spiculum only 



143. in Spongia plumom, Montagu. Each of the hami 

 appears as if forcibly compressed towards the 

 termination of the shaft, which seems to have been 

 equally influenced by the compression, so that the 

 hami have become angulated, as represented in the 

 profile view of one of the spicula. Fig. 143. The 

 whole of the spicula are dentato-palmate, and the 



