U S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 84 PLATE 54 







ALLOPORA CAMPYLECA TRACHYSTOMA (1). STYLASTER GEMMASCENS ALASKANUS 

 (2), AlLOPORA VERRILLI (3). A. PAPILLOSA (4j, AND A. PETROGRAPTA (5). 



FOR EXPLANATION OF PLATE SEE PAGE 551 



