32 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I49 



quite similar to that of the living population shown in figure 5. The 

 principal difference is that in percent of the total polulation E. 

 clavatum is more abundant in all areas. The areas where E. clavatum 

 comprises over 70 percent of the population have been extended for 

 about another mile offshore, and even in the central areas of the 

 Sound E. clavatum commonly occurs with a frequency of over 20 per- 

 cent. 



The areal distribution of Buccella frigida in percent of the total 

 population is shown in figure 15. The distribution pattern of B. 

 frigida is somewhat different from that previously noted. Instead of 

 a narrow maximum-frequency band in the east which expanded to the 

 west, we have a large area where B. frigida occurs with a frequency 

 of 10-30 percent. There is, however, a general increase in frequency 

 toward the central areas from a minimum along the shore. 



The areal distribution of Eggerella advena in percent of the total 

 population is shown in figure 16. This distribution of E. advena is 

 not as symmetrical as it was in the living population. There is still a 

 general increase toward the central areas, but the maximum frequency 

 is only 63 percent instead of 92 percent, and in traverse 3 the area of 

 maximum frequency is somewhat south of center. 



Size of the Total Population 



Figure 17 shows the distribution of the total population in num- 

 bers of specimens per uniform sample. The numbers used for trav- 

 erse 3 are from the grand stations. The near-shore areas, with the 

 exception of the north shore of Long Island east of longitude 73° 

 and traverse 5, contain over 500 individuals per sample. An area of 

 200-500 individuals per sample occurs on the north side of traverses 

 2 and 3 and expands eastward to cover nearly the entire area of 

 traverse 4. The western portion of the central area contains a large 

 area of 90-200 individuals per sample which decreases in size east- 

 ward and is nearly absent in traverse 4. 



The general pattern of the total population is similar to that of the 

 living population. The near-shore areas contain the greatest num- 

 bers of individuals, whereas the offshore areas contain far fewer. 

 The north shore of Long Island east of longitude 73° and traverse 5 

 is conspicuously barren in both cases. In general, the areas where 

 the greatest number of empty tests occur are also the areas of maxi- 

 mum living Foraminifera. 



