PROM THE society's GARDENS. 



293 



unlike the preceding tergites, runs i-ight across the dorsal surface 

 from side to side. This is succeeded by a, large shield-like plate 

 of chitin forming the fused tergites of the 8th and 9th segments. 

 Thei'e is a deep median bay in its posterior margin, into which 



Text-%ure23. 



Ps.P. 



Rhojpaloceras stylifer. Male copulatoiy apparatus. X 185. 

 BP. Basal plate ; Far. pararaere (fused) ; Ps.P. pseudo-penis (A. side view). 



is closely fitted the broad bases of the terminal stylets. Ventral 

 surface : The 7th sternite is broad and long and, unlike the 

 preceding sternite, runs right across the sternum from side 

 to side. In front, the anterior part encroaches somewhat upon 



