t« !< 
32 
142. Pleurodesmium 
P. brebissonii Kutz. 
143. Pleurosigma 
A-29: 14 
P. sp. 
P. acuminatum Grun. 
P. affine Grun. 
P. affine Grun. 
var. fossilis Grun. 
P. americanum Boyer 
P. angulatum W. Sm. 
P. attenuatum W. Sm. 
P. baileyi Grun. 
P. balticum W. Sm. 
P. convexum Grun. 
P. curvulum Grun. 
P. decorum W. Sm. 
var. delicatulum W. Sm. 
P. elongatum W. Sm. 
P. elongatum W. Sm. 
var. gracilis Grun. 
P. estuarii 
P. fasciola W. Sm. 
P. formosum W. Sm. 
P. formosum W. Sm. 
var. longis sima Grun. 
P. grundlerii Grun. 
P. hippocampus W. Sm. 
P. kutzingii Grun. 
P. latorale W. Sm. 
P. naviculaceum Breb. 
P. olympiaiium Terry 
P. pulchrum Grun. 
P. rigidum W. Sm. 
P. samonense 
P. simile Grun. 
P. sinense Grun. 
P. spectabile Grun. ! 
P. spencerii W. Sm. 
P. strigilis W. Sm. .... 
P. strigosum W. Sm. 
P. terryanum Per. 
P. virginicum H. L. Sm. 
P. wansbeckei Donk. 
144. Pleurostaurum 
15-44 
45-49 
50-51 
52 
53-70 
71-77 
78-81 
82 
83-87 
A-29: 88 
89 
90 
66, 92-96 
97-98 
99 
100 
•A-30: 1-3 
4 
5-6 
7-9 
10 
11 
12 
■ T 
13-17 
18 
.A-13: 
84 
.A-30: 
19 
20 
.A-20: 
71 
A-30: 
21 
22 
.A-23: 
50 
A-30: 
23 
24-25 
26-27 
•A-25: 
23-25 
A-30: 
28-37 
.A-19: 
79 
.A-30: 
8-9 
P. sp. 
P. acutum Rab. 
P. fulmen Grun. 
P. frauenfeldianum Grun. 
38 
39 
40-42 
43 
