SYSTEMATIC INDEX. 



IX 



Finn. 1. 



Page 



Subfam. 1. Arcitue 128 



1. Scaphula, Benson 129 



1. celox, Benson J29 



2. pinna, Benson 130 



:"}. deltas, Blanford U30 



Suborder 2. Submytilacea . . 132 



Fam. 1. UNIONIDJE 132 



Subfam. 1. Utiioninee 132 



1. Solenaia, Conrad 132 



1. soleuiformis (Benson) . . 132 



Subfam. 2. Hyrime 134 



1. Unio, Retzius 134 



2. Lymnium, Oken 134 



1. niongolicus, Middendorff 135 



3. Nodularia, Conrad 135 



4. Nodularia, Conrad (sensu 



stricto) 135 



1. digitiformis (Sowerby) . . 135 



2. cseruleus (Lea) 136 



var. gaudichaudi (Ey- 



doux) 1 37 



var. keraudreni (Ey- 



doux) 137 



3. shurtleffiana (Led) 138 



4. occata (Lea) 138 



5. pacliysoma (Benson) . . 139 



6. chaudhurii, Preston . . 140 



7. bonneaudi (Eydoiix) . . 140 



8. pugio (Benson) 141 



9. gratiosa (Phillipi) 141 



10. crispata (Gould) 142 



11. scobina (Hanley) 142 



12. andersoniana (Nevill) . . 143 



13. theobaldi, Preston 143 



14. olivaria (Lea) 144 



15. nuttalliana (Lea) 145 



16. involuta (Benson) 146 



5. Radiatula, Simpson 146 



1. crispisulcata (Benson) . . 146 



2. lima, Simpson 147 



var. siliguriensis(Pres- 



ton) 148 



5. Physimio, Simpson 148 



<3. Lens, Simpson 148 



1 . velaris (Soiverby) 149 



7. Pseudodon, Gould 149 



8. Trigonodon, Conrad 149 



Page 



1. peguensis (Anthony) . . 150 

 var. crebristriatus(/l?z- 



thony) 150 



var. curvata, Preston . 152 

 9. Pseudodon, Gould (sensu 



stricto) 152 



1. inoscularis (Gould) .... 152 



2. salwenianus (Gould) . . 152 



3. nicobaricus (Morch) . . 153 



10. Bineurus, Simpson 153 



1. ava (Theobald) 153 



11. Parreyssia, Conrad 154 



12. Parreyssia, Conrad (sensu 



stricto) 154 



1. corruffata (Millie r) .... 154 



var. fragilis (Hanley 

 $ Theobald) 156 



var. laevirostris (Ben- 

 son) 156 



var. nagpoorensis 



(Lea) 157 



2. wynegungaensis (Lea) . 157 



3. favidens (Benson) .... 158 



var. marcens (Benson) 159 

 var. trig-ona (Benson) . 159 

 var. densa (Benson) , . 159 

 var. deltae (Benson) . . 159 

 var. chrysis (Benson), 160 

 var. viridula (Benson) 160 

 var. assamensis, Pres- 

 ton 161 



var. pinax (Benson) . . 161 

 var. plagiosoma (Ben- 

 son) 162 



4. smaragdites (Benson) . . 163 



5. bhamoensis ( Theobald) . 163 



6. pernodulosa (Preston). . 164 



7. feddeni (Theobald) 165 



8. daccaensis, Preston .... 165 



9. tavoyensis (Gould) ... 166 



var. triembolus (Ben- 

 son) 167 



10. vulcana (Hanley) 168 



11. feeea (Tapparone-Cane- 



fri)..... 168 



12. rajabeusis (Lea) 169 



13. rugosa (Gmelin) 169 



14. corbis (Hanley) 169 



15. burmanus (Blanford) . . 170 



16. sikkimensis (Lea) .... 171 



17. gowhattensis(7tfeo&afr/) 171 



18. perconvexa, Preston . . 172 



19. annandalei, Preston. . . . 173 



20. dalliana ; Frier son .... 174 



13. Lamellidens, Simpson .... 174 



