138 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.1 



extends irregularly 4 miles from Cabo Haro to Punta Baja. The most 

 protected inlet is Bahia Catalina, 1% miles from Cabo Haro, where shore 

 collecting on shingle and dredging in and outside the bay have been 

 carried on. 



The outer harbor is shut off from the Gulf by the Isla de Pajaros and 

 from La Laguna, an extensive body of water lying to the northward, by 

 the long, narrow spit from the east shore, Playa de los Dolores. The 

 outer harbor is wide open to the middle harbor, but the middle harbor is 

 somewhat closed off from the inner harbor by islands and peninsulas, be- 

 tween which, however, there is a clear passage. The outer harbor is suit- 

 able for anchorage of large ships, but the middle harbor is shallower, and 

 the inner harbor more so, only suitable for vessels of shallow draft. 



The City of Guaymas is situated at the head of a small bay on the 

 northwestern side of the inner harbor. 



Some shore collecting on rock and shingle in the middle and inner 

 harbor and one dredging station, in 2-3 fathoms, in the middle harbor 

 cover the activities here. 



The rugged hills and mountains, which are conspicuous near the shore 

 in the Guaymas region, do not last for long, but the low-lying shore and 

 immediate background hold sway again for a great distance. From Guay- 

 mas Harbor to Ahome Point, approximately 175 miles, through three 

 long, sweeping curves, there is little else than sandy shores, sandy islands, 

 sandy shoals, and sandy lagoons, making it difficult to approach the shore, 

 and with such little variety that it offers little attraction to a marine 

 collector. No collecting has been done anywhere near this part of the 

 coast. 



From Point Ahome, the same type of coast extends directly southward 

 for 20 miles to San Ignacio Point, a point on a small island of the same 

 name that lies off a large island, Santa Maria Island, 13% miles long, 

 one of the many elongated, low islands, separated by lagoons or shallow 

 water areas from the low mainland. The trend of the coast here is east- 

 ward ; so the long axis of the island lies east and west. Its southern shore 

 forms the boundary of San Ignacio Bay. The east point of the island, 

 Santa Maria Point, delimits, to the westward, Topolobampo Harbor and 

 its northwestern extension, San Carlos Bay. 



Lying 13 miles west-southwestward of Santa Maria Point is San Ig- 

 nacio Farallon, a conspicuous, white, barren rock, 465 feet high. 



Shore collecting has been done on the rocks at San Ignacio Farallon, 

 and dredging in San Ignacio Bay, in 3 to 90 fathoms. 



