from the Island of Malta. 117 



PLATE VII. 



Fig. 1. Hemiaster Scillce: a, the upper surface, showing the ambulacral 

 star and peripetal fascicle, natural size ; b, the under surface of 

 the same test ; c, a lateral view, to show the great height of this 

 species ; </, the perforated tubercles and encircling granules, mag- 

 in tied; e, a portion of the single ambulacrum, showing the 

 arrangement of the pores ; f, a portion of a |x>riferous zone. 



fig. 2. Hemiaster Cotteauii : a, the upper surface, natural size ; b, the 

 perforated tubercles, with their circles of granules ; c, portion of 

 a poriferous zone ; if. portion of the penpetal fasciole, with its 

 boundary granules. 



Fig. 3. Scalaria Duciei : a, shell, the natural size ; b, a fragment showing 

 the mouth. 



Fig. 4. Lenticulites complanatus : a, natural size of this Foraminiferous 

 shell; b, a section magnified, showing the cells: large rocky 

 masses of this fossil occur in the yellow sand associated with the 

 Urchins of that deposit. 



