﻿Jan., 1858.] 



ELLIOTT SOCIETY. 



271 



Fig. 7, a — Another smaller fragment, in which no further changes were observed. 

 Fig. 76 — A ciliated fragment in repose, with its cilia at rest. 



Fig. 8 — Another specimen, scarcely older than fig. 7, but possessed of eight 

 ciliary rows in four pairs, 

 c, a and as above. 



s, appeared to be a small cavity beneath the cuticle, a. 

 Fig. 9-14 — Further advanced embryos, for which the following are the letters: 



a, the cuticle. 



b, the constriction, in which are situated the tentacula. 



c, the ciliary blades. 



d, the smaller lobes. 



e, the greater lobe, which is developed before d. 



f, the constriction, which separates the lobe, d, from the ciliary promi- 

 nence. 



g, the outline of the lobes, d and e, as seen in one of the specimens, when 

 the tentacula were in profile. 



h, constriction, in which were placed the tentacula^ perhaps, identical 

 with b y ff. 9 and 10, 



r, root, or point of attachment of 

 t, the tentaculum. 



3, appearances which may have been produced by a cavity within. 

 The figures, 9 to 14, are not numbered in the order of their age. Ff. 11, 13, 

 and 14, are younger than 9, 10, and 12. Fig. 11 is a view from above; the cilia 

 being turned towards the observer. Ff. 13 and 14, are views from the side of 

 specimens, whose lobes, dand e, are not yet developed. In fig. 13, the tentacula 

 were composed of single threads ; they are double in all the other figures. 

 Fig. 12 is a side view, in which the tentacula are seen in profile. Ff. 9 and 10, 

 are views from the side, (with the tentaculum turned towards the observer,) in 

 which the lobe, d, is developed. 



Members Elected. 

 Hon. Edward Frost. 

 Robert H. Lucas, Esq. 



JANUARY 1st, 1858. 



Robert Hume, Esq. in the chair. 



J. Randolph Mordecai, Esq. presented some specimens of 

 rock, obtained as ballast, from Palma, containing impressions 

 of shells. 



Prof. John McCrady presented a small collection of Pleio- 

 cene Fossils from Wilmington, N. C. containing some speci- 

 mens of Acephala, Gasteropoda, and a species of Oculina ? 

 t Oculina palmata? 



J. R. Mordecai, Esq. a number of Fossils from the Penn- 

 sylvania Coal Measures. 



