Hydroids of the Allan Hancock Pacific Expeditions since March 1938

"Reports on the collections obtained by Allan Hancock Pacific expeditions of Velero III off the coast of Mexico, Central America, South America, and Galapagos Islands in 1932, in 1933, in 1934, in 1935, in 1936, in 1937, in 1939, in 1940, and in 1941" -- Cover.

AHFPUB05081AHFPUBPE0405AHFPUBPE0405081HydromedusaeRV Velero III Cruiser