ful, the development of no less than 16 different forms of Echinoderms 

 being studied more or less completely during the stay there from the end 

 of April to the beginning of July 1914. A preliminary report on the 

 researches carried out there was published in the "Annotationes Zool. 

 Japonenses" Vol. VIII. 1914 ("On the development of some Japanese 

 Echinoderms"). 



By the time I had to leave Misaki there were several good cultures of 

 larvae, which I was very sorry to leave behind and I resolved to try to carry 

 some of them along with me to the next place to be visited, namely Sydney, 

 N. S. Wales. This was carried out partly successfully and an important 

 experience thus gained which was made useful at later occasions. 



During the first stay in Australia, from the middle of August to the 

 middle of October, there was no opportunity of making embryological 

 studies, no species being found to have ripe products by that time.^) 

 In New Zealand a few species were reared successfully under very unfav- 

 ourable circumstances onboard the little steamer "Hinemoa". On an 

 excursion by land to Napier N. Z. numerous specimens of Arachnoides 

 placenta were found in a small lagoon; as they appeared to be ripe, fertili- 

 zation was tried, although 1 had only a pocket lens with me and was thus 

 unable to test the result. The supposed culture I then took along with 

 me in a jar to the interior of the country, carrying also a jar with pure 

 seawater for eventually transferring the young embryos. These were found 

 swimming at the surface the next day, and being then transferred to the 

 other jar they went on developing normally, and the culture was kept 

 successfully during a forthnight without any change of the water. — 

 Fertilization of the interesting Echinobrissus recens was made in Wellington 

 on the day before the departure; the culture was brought succesfully to 

 Sydney. On the return hereto opportunity was found of rearing the em- 

 bryos of Heliocidaris erythrogramma. A preliminary report on the remark- 

 able shortened development of this Echinoid was published in the Proceed- 

 ings of the Linnean Society of N. S. Wales (Vol. XL. 1915). 



On Hawaii, the next place visited, fertilization was made of quite a 

 number of species, among which such interesting forms as Colobocentrotus 

 and Heterocentrotus. Conditions were, however, not very favourable for 

 rearing the larvae beyond the younger stages. At the place where the work 

 was carried out (near the little town Hilo), the water (which had to be 

 taken from the shore, no boat being available) not being as pure as desir- 

 able and perhaps also less salt than desirable (on account of submarine 

 springs, which abound in several localities along the coast of the island 



1) There may have been some species with ripe sexual products by the middle of Au- 

 gust, but I had no time for making such studies just then. 



