48 PAPERS FROM THE DEPARTMENT OF MARINE BIOLOGY. 



Plate 18. — No. 39. Cyphastreaserailia (FoTskal). Immature. From the southeast reef-flat 



of Maer Island, 1,650 feet from shore, in water about 16 inches deep at low 



tide, on a hard rocky bottom. 

 No. 40. Stylophora pistillata (Esper). From a shallow cleft-pool in the lithotham- 



nion ridge of the southeast reef of Maer Island, on a hard rocky bottom, 



1,740 feet from shore, in water 2.5 inches deep at low tide; exposed to the 



full force of the breakers. 

 No. 41. Acrhelia horrescens (Dana). From the southeast reef-flat of Maer Island, 



about 1,025 f^st from shore, in water about 14 inches deep at low tide, on 



a hard rocky bottom. 

 No. 42. Hydnophora microconos (Lamarck). From the southeast reef-flat of Maer 



Island, 1,640 feet from shore, on a hard rocky bottom, in water 14 inches deep 



at low tide. October 1913. 

 No. 43. Psammocora gonagra Klunzinger. From the southeast reef-flat of Maer 



Island, 545 feet from shore, on a rocky bottom, in water 1 1 inches deep at 



low tide. 

 No. 44. Pavona varians Verrill. From the southeast reef-flat of Maer Island, 830 



feet from shore, on a hard bottom of broken coral, in water 14 inches deep at 



low tide. 

 Plate 19. — No. 45. Montipora ramosa Bernard. From the northwest side of Maer Island, 



180 feet from shore, on a grass-flat laid bare at the spring tides; firm, sandy 



bottom. 

 No. 46. Montipora venosa (Ehrenberg). From the southeast reef-flat of Maer 



Island, 1,640 feet from shore, on a hard rocky bottom, 15 inches deep at low 



tide. 

 No. 47. Montipora sp. aff. informis Bernard. From the southeast reef-flat of Maer 



Island, about 1,425 feet from shore, on a hard bottom of broken coral, in 



water 14 inches deep at low tide. 

 No. 48. Euphyllia glabrescens (Chamisso and Eysenhardt). From the southeast 



reef-flat of Maer Island, 820 feet from shore, in protected crevices, on a 



bottom of broken coral, in water 10 inches deep at low tide. 



