PLATE 16. 
Bathydorus laevis spinosissimus LENDENFELD. 
Figs. 1-8, 10, 11, 14-24 — specimen A. 
Figs. 9, 12, 13 — specimen B. 
1, 2.— Side-views of pentactines with long proximal and short lateral rays, of specimen A; magnified 50: 
phot. Zeiss, planar 20 mm., compens. oc. 6. 
3.— Side-view of a hexactine of specimen A; magnified 50; phot. Zeiss, planar 20 mm., compens. oc. 6. 
4-8.— Side-views of pentactines with long lateral rays, of specimen A; magnified 50; phot. Zeiss, 
planar 20 mm., compens. oc. 6: 
4-6, 8, with normally developed rays; 
7, with the proximal and two lateral rays reduced in length and terminally thickened. 
9.— Gastral pinule-like hexactine of specimen B; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6. 
10, 11.— Two gastral pinule-like hexactines of specimen A; magnified 200; phot. Zeiss, apochr. 8, 
compens. oc. 6. 
12-14.— Dermal stauractines; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6: 
12, 13, of specimen B; 
14, of specimen A. 
15.— Part of the apical view of the lateral rays of a pentactine of specimen A; magnified 200; phot. 
Zeiss, apochr. 8, compens. oc. 6. 
16, 17.— Apical views of the lateral rays of pentactines of specimen A; magnified 50; phot. Zeiss, 
planar 20 mm., compens. oc. 6: 
16, of a pentactine in which all the lateral rays are properly developed; 
17, of a pentactine with one lateral ray reduced in length. 
18.— Abnormal hexactine of specimen A; magnified 30; phot. Zeiss, planar 20 mm. 
19.— Rectangular diactine of specimen A; magnified 50; phot. Zeiss, planar 20 mm., compens. oc. 6. 
20, 21— Part of a slightly heated lateral ray of a pentactine of specimen A; magnified 600; phot. 
Zeiss, H. I. apochr. 2, compens. oc. 6: 
20, focussed higher; 21, focussed lower. 
22, 23.— Part near the base of a lateral ray of a pentactine, of specimen A; magnified 600; phot. Zeiss, 
H. I. apochr. 2, compens. oc. 6: 
22, focussed higher; 23, focussed lower. 
24.— End of a lateral ray of a pentactine of specimen A; magnified 600; phot. Zeiss, H. I. apochr. 2, 
compens. oc. 6. ) 
Staurocalyptus hamatus LeNDENFELD. 
Figures 25-43. 
25-28.— Ends of rhabds; magnified 200; phot. Zeiss, apochr. 8, compens, oc. 6: 
25-27, of small rhabds; 
28, of a large rhabd. 
29.— A small rhabd; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6. 
30-33.— A middle-sized stout rhabd, and parts of it: 
30, the rhabd; magnified 30; phot. Zeiss, planar 20 mm.; 
31-33, parts of the rhabd; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6: 
31, one end; 
32, portion of the middle-part; 
33, the other end. 
