Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
PRENTIss. — Otocyst Crustacea. 
49. 
50. 
61. 
52. 
53. 
54. 
56. 
PLATE 10. 
- All Figures are of Carcinus ; anterior is up in Figure 55. 
Group hair. X 600. 
Transverse section through the sensory cushion of the hook hairs. 
< 168. 
Hook hair. X 600. 
Portion of outer flagellum of antennule, showing the bases of olfactory 
hairs and their innervation.  X 95. 
Thread hairs and their nerve elements. Methylen blue.  X 95. 
Tip of thread hair. X 1300. 
Nearly frontal section, inclining dorsal and forward, through both anten- 
nules and brain. X 25. 
