1891. | ELECTION OF OFFICERS. 129 
times been up for discussion. An exceeding pleasant feature Of these 
meetings has been the presence of Prof. Henry A. Ward, and the 
interest in the work of the Section has been largely due to his extensive 
fund of information on all the subjects discussed. 
ELECTION OF OFFICERS. 
The annual election of officers for the ensuing year was held, which 
resulted as follows : 
President, H. L. FAIRCHILD. 
First Vice-President, A. LL. AREY. 
Second Vice-President, J. EUGENE WHITNEY. 
Secretary, FRANK C. BAKER. 
Corresponding Secretary, GEO. W. RAFTER, 
Treasurer, EDWIN E. HOWELL. 
Librarian, Mary E. MACAULEY. 
Councillors, 
{ FLORENCE BECKWITH. 
For three years, - 
{ J. L. RosEBoom. 
To fill vacancy,—H. L. PREsTON. 
The following paper was read : 
DESCRIPTIONS OF NEW SPECIES OF MURICIDA!, WITH 
REMARKS ON THE APICES OF CERTAIN FORMS. 
By FrRaNK C. BAKER. 
Several months ago I gave the results of my investigation upon 
the apex in the typical or Z7zbulus group of Murices.* In that paper 
I described the apex of thirteen species. In the present communica- 
tion I shall add five species to that number. 
The embryonic apex of the typical group appears to be divisible 
into two principal groups or divisions ; first, those with smooth, rounded 
whorls, and second, those with carinated whorls. 
The smooth rounded whorls appear to be but little diversified, 
whilst those of the carinated group are subject to no little variation. 
The carina, for example, may end either in the suture below, or be 
merged with the lowest of the four spiral lirz of the succeeding whorls. 
The embryonic varix is not always present, and the carina, not infre- 
quently, ends abruptly insthe center of the last embryonic whorl. The 
number of whorls seems to be quite constant, two, to two and a half 
* (Proc. Acad. Nat. Sci. Phil., 1890, p. 66.) 
