Table 7. Species reported for the first time at the Millstone subtldal 

 (S) and Intertldal (I) stations sampled from September 1982 - 

 June 1983. 



Mollusca 

 Pelccypoda 

 Mactrldae 



Splsula polynma S 

 Lasaeidae 

 Allgena elevata S 

 Annelida 

 Polychaeta 

 Syllldae 



Brania pulsilla S 

 Terebellidae 



Amphltrlte johnstonl S 

 Goniadidae 



Gonladella maculata S 

 Spirorbidae 

 Spirorhis vicolaceus S 



Arthropoda 

 Xanthldae 



Rhithropanopeus harrlsil 

 Lyslanassldae 



Orchomenella plnguis 



Bodotriidae 



Leptocuma minor 

 Bateldae 



Batea catharinensis 



periods with the highest numbers collected in June at all stations, except 

 JC. 



Between-station differences in the numbers of species and the 

 variations within years observed at all stations during 1983 has been 

 characteristic of these communitlrs since 1976. Overall, the numbers of 

 species have remained fairly constant on an annual basis and no station has 

 exhibited any consistent increase or decrease in species numbers. All but 

 one station exhibited an increase in species numbers beginning in March 

 1979; this corresponded to the time when a smaller mesh sieve (0.50 mm vs 

 0.71 mm) was used to process samples. 



Average quarterly density ranged from a high of 289/core (JC) to a low 

 of 31/core (IN) (Fig. 11). Density was consistently highest at JC 

 and lowest at IN, and at all stations high densities were found in 

 September and June. 



29 



