57 
at Banda, Macasser and in the Java Sea and the Sunda Strait. Special 
and very cordial thanks are due to him for his untiring interest in 
the investigations of the Expedition and for his faithful and ever 
kind and helpful companionship. Finally the author wishes to ex- 
press his most sincere thanks to his friend and companion, Dr. 
Hjalmar Jensen, who always most willingly made it his special 
task to solve the many sorts of practical problems and difficulties 
connected with such an expedition, and to whose genial and friendly 
iupport the author feels exceedingly indebted. 
The author left Batavia on September 20th and returned to 
Copenhagen at the end of October 1922. 
I. Amboina. 
Ever since Rumphius published his work “d’Amboinsche Rari- 
teitkamer (1705) Amboina (or Ambon — the two forms of the name 
being used deliberately —) has been one of the classical localities 
in natural history. Researches undertaken by various naturalists 
in more recent times, especially by Bedot & Pietet in 1890, 
Se mon in 1891 -1892 and the “Siboga” Expedition 1900, have 
shown many more forms to oceur there than those recorded by 
Rumphius, the number of species thus known to oceur in the 
Bay of Amboina being very considerable. It was accordingly with 
rather great expectations that the Expedition set out to work there. 
As it would not be convenient to establish the headquarters of 
the Expedition in the small hotel in the middle of the town, it was 
ihought desirable to find a place outside the town, where a temporary 
laboratory might be established. Through the kind help of the Assi¬ 
stent-Resident, Mr. Noll, we were introduced to a gentleman in 
the city of Amboina, Mr. Versteegh, who possesses a country 
house a few kilometers from the town, in a place named Gelala, 
situated in a plantation of Cocos, Arenga, nutmegs o. a., close to 
the shore. This delightful house he most liberally placed at our 
disposal, there we established our temporary laboratory and spent 
a whole month under the most satisfactory circumstances. 
To begin with we had to confine our researches to the shore 
and the shallow water, having only rowing boats with native divers 
for our disposal, until the instalment of the motor and winch on 
the Amboina was ready. Off Gelala there is a large flat, which 
