1. Colurus deflexus 
la. ” ” 3 
2. Colurus bicuspidatus 
2a. ” ” 
3. Colurus obtusus 
3a. ” ” 
3b. ” ” 
Be. ” ” 
4. Colurus ccelopinus 
4a. ” ” 
4b. ” ” . 
5. Colurus amblytelus . 
5a. ” ” 
6. Colurus caudatus 
6a. ” ” 
60. ” ” 
7. Monura colurus 
7a. ” ” 
8. Mytilia Tavina 
8a. ” ” 
8b. ” ” 
8c. ” ” 
9. Cochleare opin han 
9a. ” 
10. Gornieace turbo 
10a. 7 
11. Pterodina opiate 
lla. is 7 
11d. ” ” 
1le. y 
12. Pterodina para(a var mats ) 
12a. 4 “A 
13. Pterodina valvata 
13a. D ; 
14. Pterodina cly mene 5 
14a. ” ” 
15. Pterodina mene 
15a. om ca 
16. Pterodina truncata 
17. Pterodina elliptica 
PLATE XXVI. 
dorsal view . . : 
side view, head Teeneted 
dorsal view. : 5 
side view 
side view, head motracted: 
side view, head protruded 
ventral view : 
obliquely ventral view 
side view 
extremity of foot, onl ea 
junction of foot and toe . 
ventral view 
side view 
ventral view 
side view 
rear view 
side view, head peoraded 
side view, head retracted 
ventral view : 
side view, head and foot Broeradedee 
side view, head and foot retracted . 
trophi 
dorsal view 
side view 
dorsal view 
side view 
dorsal view 
ventral view, head Potencled 
side view 
front view 
dorsal view 
ventral view, head an fone ietracted 
ventral view 3 
dorsal view, lorica folded . 
dorsal view 
dorsal view, head peteecre 
dorsal view 3 
ventral view, lorica . 
ventral view 
lorica, ventral view . 
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