Tertiary.'] PALEONTOLOGY OF VICTORIA. [Echinodermata. 



ambulacra above. In case the fascicles should be found in 

 Prof. Duncan's species, I have used the same specific name. 



Rare in the Miocene Tertiary strata of beds A d 22 and A d 23 ; 

 at Bird Rock Point, near mouth of Spring Creek, 15 miles S. of 

 Geelong. 



EXPLANATION OF FIGURES. 



Plate LXVII. Fig. 2, side view of specimen, natural size, showing the position of mouth 

 and anal opening, the posterior pairs of ambulacra and the peripetalous fascioles, natural size. 

 Fig. 2<z, same specimen, viewed from behind, showing the posterior depression with the anal 

 opening, the posterior ambulacra and the peripetalous and lateral fascioles, natural size. 



Plate LXVIII. Fig. 1, upper surface of specimen, natural size, showing the five ambulacra 

 and peripetalous fasciole. Fig. la, pores of anterior ambulacrum, magnified. Fig. \b, pores of 

 lateral ambulacra, magnified four diameters. Fig. 2, underside of another specimen, showing 

 the plastron and tuberculation, natural size. 



FREDERICK McCoy. 



[ 22] 



