Plate XX. 
Gammarus annandaici, n. sp. 
Fig. I. — First antenna, x I5'i. 
2. — Second ,, x 151. 
3. —Second thoracic limb of male, x i.S'i- 
4 — Third ., ,, x 15-1. 
5. — Spines on palm of second and third thoracic legs of male. 
6. — Second thoracic limb of female. X I5'i- 
7. — Third „ „ „ x 15 i- 
8. — Fourth ,, ,, male. X 151. 
9. — Eighth „ „ X 151- 
10. — Gill with accessory vesicle, x i5'i. 
11. — Fourth coxal plate of specimen from h. Biwa. X 151. 
12. „ „ „ „ „ „ Hikone. x 151. 
13- • „ „ „ „ Sapporo. X 15 i- 
14. — lyower margin of third pleon segments. 
15. — First uropods. X 15 "i. 
lb. — Second x 151- 
17. — Third „ X 151. 
18. — ^Last three segments of the pleon, and telson. X 15 i. 
X 82". |. 
Gammarus pulex (Linn.). 
Fig. 19. — Second thoracic limb of female. X I3"0. 
., 20. — Third „ X I3"0. 
.. 21. — Second .. ,, male. X 13 0. 
22. — Third X 13-0. 
.. 23.— Eighth .. .. X 130. 
24. — Fourth coxal plate. X I5'i- 
25. — Lower margin of third segment of pleon, 
26. — Third uropod. X I5"i. 
„ 27.— Telson. x 34-3. 
X 15-1. 
