306 MOLLUSCA COLLECTED IN DUTCH NEW GUINEA. 



PLATE XXXIII. 



Fig. 1. Papuina wollastoni. Nervous system, eg., cerebral ganglion; pg., pedal 

 ganglion; pig., pallial ganglion; vg., visceral ganglion; bg., buccal 

 ganglion; pn., pallial nerve; pdn., pedal nerves; gn., penis-nerve; 

 phn., pharyngeal nerves; spn., subpharyngeal nerves; p., penis; 

 ep., epiphallus. 

 2 a. Id. Mantle (shoveing pigment-tracts). 

 2h. Id. Diagrammatic representation of the pigment-tracts. 

 3. Id. Pneumostome viewed from within the branchial cavity, ro., respi- 

 ratory orifice ; sp., sphincter muscle. 

 Eadula. 

 Jaw. 

 Antinous anthropophagorum. Shell. 

 Chronos suhlimis. Shell. 

 Papuina lituus. Shell. 

 Pafuina wollastoni. Shell. 



