MARINE DIATOMS OF THE PHILIPPINE ISLANDS 181 



Plate 29 



Page 



Fig. 1. Plagiogramma antillarum Cleve. X790 129 



2. Plagiogramma a ttenuatum Cleve, typical form. X800 129 



3. Plagiogramma distinctum, new species. X580 130 



4. Pleurosigma acus, new species. X820 132 



5. Pleurosigma acus, new species. X610 132 



6. Pleurosigma dolosum, new species. X610 133 



7. Pleurosigma exemptum, new species. X100 134 



8. Pleurosigma exemptum, new species. X550 134 



9. Pleurosigma obesum, new species. X310 136 



Plate 30 



Page 



Fig. 1. Pleurosigma falx, new species. X850 134 



2. Pleurosigma obiusum, new species. X500 137 



3. Pleurosigma obtusum, new species. X500 137 



4. Pleurosigma prisma, new species. X800 137 



5. Pleurosigma rigens, new species. X480 138 



6. Pleurosigma suluense, new species. X200 139 



7. Pseudo-Eunotia doliolus (Wallich) Grunow. X600 140 



8. Pseudo-Eunotia doliolus (Wallich) Grunow. X600 140 



Plate 31 



Page 



Fig. 1. Rhabdonema sutum, new species. X450 141 



2. Rhabdonema sutum, new species. X450 141 



3. Roperia tesselata (Roper) Grunow, ovate var. X690 143 



4. Sceptroneis (?) cuneata Grunow. X590 144 



5. Scoliopleura partistriata, new species. X760 144 



Plate 32 



Page 



Fig. 1. Sticlocyclus various, new species. X380 146 



2. Sticlocyclus varicu-s, new species. X400 146 



3. Stictodiscus nitidus Grove and Sturt, wide variety? X450 150 



Plate 33 



m Page 



Fig. 1. Stictodiscus californicus Greville, malformation. X490 149 



2. Surirella bertillonii, new species. X910 151 



3. Surirella continuata, new species. X390 153 



4. Surirella cuneatella, new species. X790 153 



5. Surirella gravis, new species. X570 155 



Plate 34 



Page 



Fig. 1. Surirella concentrica, new species. X380 152 



2. Surirella contigua, new species. X440 152 



3. Surirella foliata, new species. X320_ 152 



(This is from Panama.) 



4. Surirella imitans, new species. X820 155 



5. S u rirella macraeana Greville, wide variety. X600 156 



6. Surirella macraeana Greville, wide variety. X600 156 



7. Surirella macraeana Greville. X800 156 



