520 



SUMMARY OF CURRENT RESEARCHES 



RELATING TO 



ZOOLOGY AND BOTANY 



(principally invertebrata and cryptogamia), 



MICROSCOPY, Etc.* 



ZOOLOGY. 



VERTEBEATA. 

 a. Embryolog-y.t 



Eggs and Egg-laying of Purple-striped Gudgeon 4— Albert Gale 

 has studied the breeding habits of Krefftius adspersus Castelnau. They 

 first bred when three years old, and there was but one spawning in the 

 year. The male cleared a site (on the side of a glass aquarium) for 

 the eggs, nibbling off confervoid growths and the like. The ova were 

 laid in strings in a circular patch of about two inches. All the chains 

 were placed horizontally, no one crossing another, and there were about 

 twenty eggs to the lineal inch. Each egg had a gelatinous base, by 

 means of which it adhered to the glass. As the eggs were deposited, 

 they were fertilized by the male. 



After the spawning was completed, the male placed himself above 

 the eggs and remained over them for nine days. In thirty-six hours 

 the gelatinous base of each egg had become elongated into a peduncle 

 the eggs themselves being also larger, and provided with a globule of air 



* The Society are not intended to be denoted by the editorial" we," and they 

 do not hold themselves responsible for the views of the authors of the papers 

 noted, nor for any claim to novelty or otherwise made by them. The object of 

 this part of the Journal is to present a summary of the papers as actually pub- 

 lished, and to describe and illustrate Instruments, Apparatus, etc., which are 

 either new or have not been previously described in this country. 



t This section includes not only papers relating to Embryology properly so 

 called, but also those dealing with Evolution, Development, Reproduction, and 

 allied subjects. 



J Australian Zoologist, i. (1914) pp. 25-6. 



