NIPPLE AREANGEMENT IN MARMOSA 



69 



pouches (Fig. 24a). But if we compare now 

 the diagram (Fig. 24b) with the previous 

 scheme (Fig. 23), we see that this is not the 

 right view of the case. The dotted line at the 

 right shows you that the five lateral nipples 

 do not form a continuous row, as would be the 





it 



♦./ 



• P 



• D 



"'■■• •a 

 Fig. 24b. 



Fie. 24a. 

 Figs. 24:A and 24b.— -Nipplk Arrangement in 



"MARMOSA MURINA." (BrESSLAU.) 



case if they corresponded to the nipples a-e. 

 But as the dotted line on the left indicates, the 

 two cranial pairs of nipples belong to the inner 

 nipple complex, and so must be called y and S 

 instead of d and e. The nipple arrangement 

 here, then, is only apparently two-rowed. In 



