568 
MR. H. N. RIDLEY ON THE 
Summary of Specimens, arranged according to the Author's 
Classification (Ann. Mag. N. H. 1875, vol. xvi. p. 43). 
Order I. Caruosa. 
Family Gumminia. 
Chondrilla nuctjla, Sdt. 10, 15, 18. 
Chondrilla phyllodes, Sdt. 16. 
Order II. Ceratina. 
None. 
Order III. Psammonemata. 
Euspongia (“ fine Turkey sponge ” of commerce). 5, 6, 9, 
14, 21. 
Euspongia (“Honeycomb sponge” of commerce). 25, 26, 
30, 35. 
Htrcinia. 2, 4, 7. 
POLYTHERSES. 1, 8, 29. 
Order IV. Ehaphidonemata. 
Ohalina. 3, 13, 20. 
Order V. Echinonemata. 
Axinella. 32. 
Order YI. Hoiorhaphidota. 
IIemeniacidon sanguinea, BJc. 37. 
Sdberites massa, Sdt. 31. 
Donatia lyncurium. 28. 
Chondropsis arenifera, Cart. 12, 17, 34, 36. 
Geodia, 11, 27, 39. 
Tethya cranium. 33. 
Order YII. Hexactinellida. 
None. 
Order YIII. Calcarea. 
Leuconia sacculata, n. sp. 38. 
