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. 
j, „ var. maconelli, Reeve. 
3, ,, ,, azonata, Hedley. 
3 3 3 3 3 3 tigris, Hedley. 
,, atomata, Gray. 
33 1 3 var. kershawi, Brazier. 
33 33 33 elongata, Hedley. 
33 33 33 azonata, Hedley. 
,, larreyi, Brazier. 
Pedinogyra cunninghami, Gray. 
>> ,3 var. miihlfeldtiana, Pfeiffer, 
j) 33 33 compressa, Mousson. 
j? 33 33 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 inflatus, Lamarck. 
33 33 var. melo, Quoy & G. 
33 33 ,3 physodes, Menke. 
33 33 33 castaneus, Pfeiffer. 
33 33 33 bulla, Menke. 
33 33 33 rhodostoma, Gray. 
„ baconi, Benson. 
,, tasmanicus, Pfeiffer. 
,, mastersi, Cox. 
„ kingi, Gray. 
33 33 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 
^Polynesian representatives of j Liparus would appear to be 
and its derivatives Diplomorpha and Partula. 
Placostylus, 
