1— Transparent cross, with tubular canals running through the arms and united by a central ring,— a structure resembling an object figured in Professor J. W. Bailey's " Microscopic forms in the Sea of Kamschatka," underthe name " Spongolitbes orthogona," but which he
says he has referred with some hesitation to Spongolitliis. Measures .01125 high, .008 broad, with a
slightly warted or rugose surface.
2— An Eucyrtidiun form bearing tubular spinous projections, arranged in the pattern of the perforations in Eucyrtidium elegans; appears to be enclosed in a transparent egg-shaped sheath or envelope, .00362 long— Lithobotrys adspersa, Ehr. Mik. Taf. XXXVI, fig. 5, has
the appearance of a wing or fin extending round the object in a somewhat similar way, and so has Carpocanium Solitarium, Taf. XXII, fig. 28. This specimen is in Slide No Gi? Springfield, Barbados.
3— Eucyrtidium (?) elegans, in an unconstrioted state, .604 long, .0012 broad ; 23 rows of nearly equi-distant perforations ; from Chimborazo, Barbados.
4— A Podocyrtis (?) Mitra or Papalis, var, (?) the lower part devoid of perforations, and with a thickening of the Silex round the boundary of the plain part, — two spines from the apex.
5— Podocyrtis Papalis, Ehr. Mik. XXXVI, 23, .00687 high, .00375 broad. In numerous specimens the outline of the base varies considerably, but there always appearsto be an internal ring or ledge.
