276 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
EXPLANATION OF THE PLATES. 
PLATE 1. 
Northeast coast of Brazil, showing the locations of stone and coral reefs and the 
configuration of the ocean’s floor off the coast from Bahia to Aracatí. See 
page 183. 
PLATE 2 
Map of the stone reef at Pernambuco, made by Harold Havens, July, 1809. See 
page 60, 
PLATE 3. 
Santa Cruz Bay, part of Hydrographic Chart 484, with additions. See page 95. 
PLATE 4. 
Map of the Bay of Bahia: a part of Hydrographic Chart No. 1522. Most of the 
soundings given on the original are omitted. See page 128. 
PLATE 5. 
Topographic map of the Brazilian coast about Santos, showing how the coastal 
mountains have been submerged, leaving their peaks as islands or as hills in a 
swampy region. (Reduced from the São Paulo sheet of the Commissão Geo- 
logica de 5. Paulo.) See pages 128 and 129. 
PLATE 6. 
Part of Hydrographic Chaft 481, showing the reefs at Cape St. Roque. See page 
228. 
PLATE 7. 
Part of the Hydrographic Chart of the mouth of the Rio Parahyba do Norte, show- 
ing the coral reef and its relation to the coast. See page 232. : 
