568 



MR. H. N. RIDLEY ON THE 



Summary of Specimens, arranged according to the Author's 

 Classification (Ann. Mag. JN". H. 1875, vol. xvi. p. 43). 



Order I. C A R n o s a. 



Family Gtiimminia. 



Chondrilla nucula, Sdt. 10, 15, 18. 

 ChondrIlla phyllodes, Sdt. 16. 



Order II. C e r a t i n a. 



None. 



Order III. Psammonemata. 



EusPONQiA ("fine Turkey sponge" of commerce). 5, 6,9, 

 14, 21. 



EuspONGiA ("Honeycomb sponge" of commerce). 25, 26, 

 30, 35. 



HiRCiNiA. 2, 4, 7. 



POLYTHERSES. 1, 8, 29. 



Order IV. Ehaphidonemata. 

 Chalina. 3, 13, 20. 



Order Y . E c h i n o n e m a t a. 



AxiNELLA. 32. 



Order VI. H o l o r h a p h i d o t a. 

 Hymeniacidoi^ sanguinea, Bk. 37. 



SUBERITES MASSA, Sdt. 31. 

 DONATIA LYNCURIUM. 28. 



CnoNDROPSis ARENiEERA, Cart. 12, 17, 34, 36. 

 Geodia, 11, 27, 39. 

 Tethya cranium. 33. 



Order VII. Hexactinellida. 



None. 



Order VIII. Calcarea. 

 Leuconia yACCULATA, n. sp. 38. 



