MARINE DIATOMS OF THE PHILIPPINE ISLANDS 179 



Plate 19 



Page 



Fig. 1. Mastogloia capax, new species. XS40 87 



2. Mastogloia cebuensis, new name. X780 88 



3. Mastogloia fusiformis, new species. X760 88 



4. Mastogloia imitatrix, new species. X520 89 



5. M astogloia ovata Grunow. X900 90 



6. Mastogloia quinquecostata Grunow variety. X860 91 



7. Mastogloia quinquecostata Grunow variety. X820 91 



Plate 20 



Page 



Fig. 1. Melosira dura, new species. X780 92 



2. Melosira dura, new species. XI 120 92 



3. Melosira gowenii A. Schmidt. X610 __ 93 



4. Melosira gowenii A. Schmidt. X670 93 



5. Melsoira incompta, new species. X670 93 



6. Navicula biformis (Grunow) Mann. X660 95 



7. Navicula biformis (Grunow) Mann. X660 95 



Plate 21 



Page 



Fig. 1. Navicula bigemmata, new species. X570 95 



2. Navicula branchiata, new species. X830 96 



3. Navicula caeca, new species. X890 97 



4. Navicula corpulenta, new species. X580 99 



5. Navicula cyclops, new species. X580 99 



6. Navicula durandii Kitton, variety. X360 101 



7. N avicula excavata Greville, wide variety. X570 102 



Plate 22 



Page 



Fig. 1. Navicula funiculata, new species. X470 102 



2. Navicula funiculata, new species. X470 102 



3. N avicula glabrissima, new species. X1000 103 



4. Navicula graeffii Grunow. X560 103 



5. Navicula imitans, new species. X590 104 



6. Navicula imitans, new species. X590 104 



7. Navicula inexacta, new name. X800 105 



8. Navicula ingens, new species. X810 105 



Plate 23 



Page 



Fig. 1. Navicula indigens, new species. X610 105 



2. Navicula inhalata A. Schmidt, variety. X390 107 



3. Navicula mendica, new species. X1100 109 



4. Navicula mimula, new name. X950 110 



5. Navicula molesta, new species. X1070 110 



6. Navicula obesa (Greville) Mann. X830 111 



(See also pi. 24, fig. 1.) 



