104 



selected as a type ; figs. 5c are those of a varietal form in which 

 the last whorl is more abrupt at the sutiu'e and shows a 

 tendency to embrace the spire. 



Dimensions of type specimen. — Total length, '475 ; length of 

 spire, vl75 ; breadth, 275 ; length of aperture, 4 ; greatest 

 breadth, '2 inch. 



Locality. — Numerous dead shells from the bed of a dried up 

 marsh near Penola, South Australia. 



Bulimus Myoporinse, spec. nov. 



Syn. B. sinistrorsus, Tate, Trans. Phil. Soc, Adelaide, p. 134, 

 t. 5, fig. 4. 



The change in the specific name is necessary because Deshayes 

 described many years ago a New Caledonian shell under the 

 name of B. sinistrorsus. The name, here substituted, has 

 reference to the habitat of the snail, that of living under the 

 shelter of Myoporum parvifolium. 



description of a 

 New Species of Belemnite 



from the mesozoic strata of central 

 australia. 



By Professor Ralph Tate, A.L.S., F.G.S., &c, President. 

 [Bead July 6, 1880.] 

 Belemnites Canhami, spec. nov. Plate iv., figs. 2a — 2c. 



Guard hastate, terminating in an acute, sub-mucronate, 

 central point ; contracted in the medio-alveolar region ; com- 

 pressed ventro-dorsally, the ratio of the two diameters 

 measured at a little further back than at the alveolar apex is 

 as 2 to 3. 



Each dorso-lateral face presents, through the whole length 

 of the alveolar region, a deep and sharply cut furrow. In the 

 region of the alveolar apex it makes an abrupt turn on to the 

 medial line of the side of the guard, then splits into two 

 shallow grooA r es, separated by a uniform distance about equal 

 to their own width, which are continued to the apex. 



The Phragmacone is sub-oblong in its transverse section, the 

 dorso-ventral diameter is to the other in the proportion of 11 

 to 13. The siphuncle is subinternal, and the axis of the 

 phragmacone is nearly straight. 



