Plate 44 



Fig. 1. Melania baccata Gould. Thoungyin River [a branch of the Salween River, Burma). 



Holotype MCZ 169052. Height 48, width 20 mm. (1.5 x). 

 Fig. 2. Melania [Io] pagodula Gould. Thoungyin River, a branch of the Salwe[e]n [River, 



Burma]. Lectotvpe MCZ 169276. Height 47, width 22 mm. [not including spinesl. 



(1.1 x). 

 Fig. 3. Melania libertina Gould. Ousima [Amami-O-shima, Ryukyu Islands]. Lectotvpe 



USNM 2120. Height 26, width 11 mm. (3.5 x). 

 Fig. 4. Physa bullata Gould. Oregon. Lectotvpe USNM 9170. Height 22, width 12 



mm. (2 x). 

 Fig. 5. Physa virgata Gould. Gila River [Arizona] and near San Francisco [California]. 



Height 13, width 8 mm. (5.6 x). 

 Fig. 6. Planorbis hirsuta Gould. [Massachusetts.] Lectotvpe MCZ 216629. Height 



1.8, width 5 mm. (8.2 x). 

 Fig. 7. Planorbis spirillus Gould. Ousima [Amami-O-shima, Ryukyu Islands]. Lectotvpe 



USNM 1577. Height 1.2, width 4 mm. (7 x). 

 Fig. 8. Planorbis dentatus Gould. San Jorge [Cuba]. Lectotvpe MCZ 169121. Height 



1.2, width 4 mm. (11 x). 

 Fig. 9. Physa elata Gould. Lower California. Lectotvpe MCZ 169130. Height 21, 



width 11 mm. (3.5 x). 



