450 



Vl.e.ä^ 





V.ie.s. 



Vce.d. 



Kitr. 14. 



Fite. 15. 



Fig. 14, Ventral aspect. Adult 5, Type III, B. 



Fig. 15. Dorsal aspect of Fig. 14. 



B.Ü. Vessel that unites V. iiiaca interna with V. iliaca externa, dorsal to the 

 A. iliaca communis. F. Foramen. V.U. Vessel that unites Vv. iliacae internae with 

 Vv. iliacae externae, ventral to the Aa. iliacae communes. For other abbreviations see 

 under Fi^s. 1 and 2. 



the Vv. iliacae externae at their point of union as in Figs. 10 and 

 11, the ventral union (F. U.) in Fig. 12 occurs with the V. iliaca 

 externa dextra somewhat caudad of this point. This variation is 

 undoubtedly correlated with the partially bifurcated condition of the 

 V. cava posterior. 



In the dorsal view of this preparation, Fig. 13, the A. sacralis 

 media has been partially removed in order to more clearly show the 

 two symmetrically developed vessels (D. f^.) that lies dorsal to 

 the Aa. iliacae communes and that unite the Vv. iliacae internae 

 with the Vv. ihacae externae. These vessels {D.U.) as in the pre- 

 ceding case, are relatively much larger than the ventral union (V.U.) 

 and constitute the principal connection between the Vv. iliacae 

 internae and externae. Also, as in all previously mentioned cases, 

 the Vv. iliacae internae in Figs. 12 and 13, unite with each other 

 ventral to the A. sacralis media before uniting with the Vv. iliacae 

 externae. 



Another variation of this particular Type is represented by 

 Figs. 14 and 15, which are, respectively, ventral and dorsal views 

 of the same preparation. 



