152 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.1 



not very effective, but the rich fauna off Navidad Head more than makes 

 up for any deficiency elsewhere. It is doubtful if any other location ex- 

 plored has so much to offer. 



Leaving Tenacatita Bay to follow the coast with a trend somewhat 

 south of eastward, there is nothing to record for over 200 miles, until 

 Petatlan Bay is reached. The landward view is much like it has been, 

 except that perhaps the high mountains come a little nearer the coast, 

 and higher individual peaks come into view. The two Colima peaks, the 

 western sentinels of a long volcanic chain, are situated in the Tenacatita 

 Bay hinterland. In many cases the immediate foreground is low, and there 

 are many lagoons similar to the one near shore in Tenacatita Bay, run- 

 ning parallel to the coast. Manzanillo, the port of entry for the State of 

 Colima, is situated on the east shore of Manzanillo Bay, 30 miles from 

 Tenacatita Bay. 



Petatlan Bay, 7 miles across at the entrance, forms an indentation in 

 the coast line 2^ to 3 miles deep, between a somewhat inconspicuous, 

 rocky bluff to the northwest and Punta Gorda, the tip of a bold headland, 

 640 feet high, Morro de Petatlan, to the southeast. This headland is 

 connected with the mainland by a low, wooded isthmus. On the bay side 

 of the isthmus the shore is shingle or rock, but on the southeast side there 

 is a long, sandy beach. On the seaward side of the headland the cliffs are 

 abrupt, perpendicular in places, but they leave a low, narrow ledge be- 

 tween them and the water's edge at low spring tide. The east and north 

 shores form a sandy beach. 



Lying 1 to \y% miles westward of Punta Gorda are the White Friars 

 (Potoci), a group of 12 rocks, of which 4 are large enough to be dignified 

 by the name of islands or islets. They serve as nesting places for a variety 

 of marine birds and are covered by guano to such an extent that, since 

 they stand out clearly from the shore, they can be recognized for a long 

 distance, particularly in approach from the southward. 



Lying a mile off the northwest entrance to the bay is the conspicuous 

 Black Rock, 46 feet high, and steep on all sides. To the westward of the 

 bluff at the northwest limit of the bay and of Black Rock is the small 

 but safe and well-protected bay, Sihuatenejo Bay, in which the Velero III 

 anchored December 11 and 12, 1931. 



White Friars have provided ornithological material and photographs. 

 The shore on the bay side of Morro de Petatlan is rather barren, but the 

 small strip at the base of the cliffs on the seaward side is much more in- 

 teresting. Dredging in the bay has given only fair results. Near the White 



