280 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
PLATE 29b. 
The sand neck between Traição Bay and Lagoa de Sinimbú. Part of the Traição 
Bay panorama. Plate 29a joins this on the left. 
PLATE 30. 
The neck of sand between Traição Bay on the right and Lagoa de Sinimbü on the 
left, looking northward. See pages 188 and 134. 
PLATE 31. 
The northern end of Mamanguäpe stone reef seen from behind the reef at low tide. 
See pages 47-55. 
PLATE 32. 
Looking south along the Mamanguápe sandstone reef at low tide. See pages 
47-55. 
PLATE 33. 
Looking north along the Mamanguäpe stone reef; the tide not all out. See pages 
47-55. 
PLATE 34. 
Looking southward, and showing the branching and bending of the Mamanguäpe 
sandstone reef. See page 48. 
PLATE 35. 
A break in Ше Mamanguäpe reef caused by undermining. The blocks in the gap 
are covered with seaweeds. See pages 47-55. 
PLATE 36. 
Looking northward along the seaward side of the Маглаприйре sandstone reef. 
See pages 47-55. 
PLATE 37, 
Looking northward along the outer side of the Mamanguäpe reef at low tide. See 
pages 47-55. 
PLATE 38. 
Along the landward side of the Mamanguápe reef, showing blocks broken by the 
surf from the outer face and thrown across the reef. The curving of the reef 
is also shown. See pages 47-55. 
