DESMACIDON. 179 



8. DESMACIDON CAVERNULA, Bow., m, 268, PI. LXXXII, 



figs. 912. 



9. DESMACIDON ROTALIS, Bow., in, 327, PI. XC, figs. 

 814. 



CC 



Mr. J. G. Waller found a specimen of this rare 

 species on a root of Laminaria at Anstey Cove, 

 Torquay." 



10. DESMACIDON SIMILAEIS, Bow. y in, 319, PI. LXXXIX, 

 fisrs. 1420. 



o 



" I received a small specimen of this sponge from 

 the Rev. A. M. Norman ; it was not more than about 

 half an inch in length, but the fragment was in a good 

 state of preservation. It was labelled ' Scarlet, "West- 

 port, tidemark.' A second specimen, also from "West- 

 port, but dredged in five fathoms, differs considerably 

 from the type represented in Vol. Ill, PL LXXXIX, 

 fig. 14, inasmuch as it is not parasitical. It is a 

 rudely cup-shaped mass, two inches in height, with a 

 very short pedicle, and is so unlike the forms of the 

 specimens previously described as to be very likely to 

 mislead the student who trusts in any degree to form 

 as a discriminating character. It has been too well 

 washed to retain all its specific anatomical characters 

 as perfectly as those of the type specimen, but 

 sufficient remain to place its identification beyond a 

 doubt." 



