NO. 2 FRASER : SCIENTIFIC WORK, VELERO III, EASTERN PACIFIC 67 



For 10 miles southward from Cape San Eugenio, the coast is some- 

 what abrupt, but little indented, backed by rapidly rising hills. For the 

 next 5 or 6 miles to Kelp Point it forms a shallow bight with a low-lying 

 shore, but Kelp Point itself is more conspicuous. It forms the boundary 

 for Port San Bartholome, with a southern extension to form Turtle Bay, 

 which provides the best harbor between the International Boundary and 

 Magdalena Bay. It is 1 mile wide at the entrance and has a depth of 2% 

 miles. Most of the shore is formed by gravel, shingle, or sand beaches. 

 Cape Tortolo forms the southwestern limit of the bay. From this cape, 

 for over 2 miles to Thurloe Head there is a continuous, conspicuous cliff, 

 25 to 100 feet high. A reef extends from Thurloe Head in a southerly di- 

 rection for 400 yards, around and adjacent to which is the most southerly 

 mass of kelp, similar in nature and size to the kelp beds farther north. 

 South of this point, these large kelps gradually disappear, until no more 

 of them are in evidence. 



East of Thurloe Head is Thurloe Bay, with a sand or shingle beach 

 backed by sand hills. 



Shore collecting and dredging have been done in the vicinity of Port 

 San Bartholome, Thurloe Head, and Thurloe Bay. Dredging near the 

 kelp on the reef off Thurloe Head gave excellent results. 



From Thurloe Head to Abreojos Point, a distance of nearly 100 

 miles, the coastal area is quite inconspicuous. The coast line itself forms 

 a number of wide, shallow bights. In the northern portion bluffs appear 

 along the coast, but these soon disappear, and the shore is mostly low 

 lying, sandy, with several extensive lagoons just behind it. The 100- 

 fathom line may be as much as 20 miles offshore. The only stop that 

 has been made in all this distance was off Asuncion Island, near the center 

 of the coast. 



From Abreojos Point the coast makes a wide sweep, first southeast- 

 ward and then almost directly southward to Cape San Lazaro, 135 miles 

 away, in a straight line, with only two significant indentations, Ballenas 

 Bay, behind Point Abreojos, and San Juanico Bay, over a third of the 

 way southward. From the sea this coastal area is not interesting. Most of 

 it is low, with sandy shores and extensive lagoons, with sand dunes or 

 low benches, sometimes cut with arroyos, forming the immediate back- 

 ground. Hills or mountains can commonly be seen, but they are far in 

 the distance. The seaward slope is just as gradual; the 100-fathom line 

 may be 40 miles offshore. The bottom is sand, mud, and broken shell. 



The only collecting stations along this part of the coast are in San 

 Juanico Bay, but in one stormy passage southward several specimens were 



