STRUCTURE AND AFFINITIES OF PANDA ATOMATA. HEDLEY. 29 



Group Macroon. 



Egg large, hard-shelled ; apex of shell consisting of 2-2^ whorls 

 of embryonic shell, sharply marked off and differently sculptured 

 from the adult. 



A. — Genital system furnished with an additional gland. Jaw 

 oxygnathous. 



Panda falconeri. Reeve. 



,, ,, var. maconelli, Reeve. 



,, ,, ,, azonata, Hedley. 



„ „ „ tigris, Hedley. 



,, atomata, Gray. 

 ,, ,, var. kershawi, Brazier. 



,, ,, ,, elongata, Hedley. 



,, „ ,, azonata, Hedley. 



,, larreyi. Brazier. 

 Pedinogyra cunninghami, Gray. 



,, ,, var. miihlfeldtiana, Pfeiffer. 



,, ,, „ compressa, Mousson. 



,, ,, ,, minor, Mousson. 



Caryodes dufresni. Leach. 



B. — Without the additional gland. 



Ba. — Jaw oxygnathous ; lateral teeth of radula simple. 



Anoglypta launcestonensis. Reeve. 

 *B6. — Jaw goniognathous ; lateral teeth of radula with 

 accessory cusp. 



Liparus infiatus, Lamarck. 



,, ,, var. melo, Quoy & G. 



,, ,, ,, physodes, Menke. 



,, ,, ,, castaneus, Pfeiffer. 



,, ,, „ bulla, Menke. 



,, „ „ rhodostoma, Gray. 



,, baconi, Benson. 



,, tasmanicus, Pfeiffer. 



,, mastersi. Cox. 



„ kingi, Gray. 



„ ,, var. trilineatus, Quoy &; G. 



,, angasianus, Pfeiffer. 



,, brazieri, Angas. 



„ onslowi, Cox. 



,, dux, Pfeiffer. 



The anatomical information on which the above synopsis is 

 based chiefly consists of these illustrations and their accompany 

 ing letterpress : — Reis. im. Phil. III., PI. xii. fig. 20, genitalia of 



*PolyTie8ian representatives of Lipanis woiild appear to be Placostylus, 

 and its derivatives Diplomorplia and Partula. 



