540 



URODELA 



[CH. 



by a ciliated funnel adjoining the root of the lung. The funnel 

 leads into a long convoluted tube running back to open into 



the cloaca. The testis, which 

 takes the form of two conical 

 bodies with their broad ends 

 apposed, or sometimes a row 

 of three rounded lobes, com- 

 municates by a number of 

 vasa efferentia with the an- 

 terior part of the kidney, 

 which is on this account 

 termed the sexual portion or 

 mesonephros. In the male 

 the kidney tubules belong- 

 ing to the hinder non-sexual 

 portion, or metanephros, are 

 split off from the archmephric 

 duct and unite into a very short 

 common trunk, the ureter, 

 which joins the archinephric 

 duct just before the latter 

 enters the cloaca (Fig. 265). 

 It has been stated above 

 that the genital glands are 

 a pair of ridges. In the 

 larva the inner portions of 

 the ridges degenerate, the 

 cells becoming largely con- 

 verted into fat-bodies, i.e. 

 lobes of peritoneum filled with 

 connective tissue in which 

 the cells secrete large drops 

 of fat (stearate of glycerine) 

 in their interiors and thus 

 become swollen fat cells. In 

 the adult these fat-bodies 

 8. External appear running parallel to the 



FIG. 265. Urine-genital organs of a male 

 Molge cristata x about 5. 



1. Testes. 2. Vasa efferentia. 3. Longi- 

 tudinal canal connecting the vasa effer- 

 entia. 4. Sexual portion of kidney 

 showing nephrostomes. 5. Wolffian 

 duct. 6. Eudimentary oviduct. 7. Non- 

 sexual portion of kidney, 

 opening of the archinephric duct which 

 has received the ureter 9 made up of 

 a number of ducts from the posterior side. They serve as a store 

 part of the kidney. 10. Fat-body. , . , f ,-, 



ot nourishment tor the eggs 



which develop during the winter-sleep. The newt, like other 



