MARINE DIATOMS OF THE PHILIPPINE ISLANDS 107 



NAVICULA INHALATA A. Schmidt 



Plate 23, fig. 2 

 (Schmidt, Atlas, pi. 2, fig. 30.) 



I have figured the form of Philippine Islands diatoms which I have 

 assigned to this species because there is some doubt that the two are 

 the same. Schmidt's type came from Samoa and Pantocsek reports 

 it and his var. biharensis from the fossil beds in Hungary. The re- 

 semblance of both these to N. spectabilis Gregory is evident. 



NAVICULA INTERCEDENS A. Schmidt 



(Schmidt, Atlas, pi. 1G0, figs. 3-4.) 



This is another species exclusive to Campeche Bay and the Philip- 

 pine Islands. It is not to be confused with N. musca Gregory 

 (Schmidt, Atlas, pi. 160, figs. 1-2). 



NAVICULA INVENUSTA Mann 



(Mann, Diat., Alb. Voyages, p. 346, pi. 53, fig. 6.) 



NAVICULA IRIDIS Ehrenberg 



(Donkin, Brit. Diat., pi. 5, fig. 6; Van Heurck, Synopsis, pi. 13, fig. 1; Schmidt, 

 Atlas, pi. 49, fig. 2.) 



Infrequent specimens of this fresh-water diatom appear in the 

 marine Philippine material, probably introduced with other detritus 

 from inflowing rivers or streams. 



NAVICULA JEJUNA A. Schmidt 



(Schmidt, Atlas, pi. 46, fig. 16; Castracane, Chall. Exp., pi. 20, fig. 12.) 



NAVICULA JUGATA Cleve 



See remarks under N. bigemmata, new species. 



NAVICULA LACRIMANS A. Schmidt 



(Schmidt, Atlas, pi. 12, figs. 59-60.) 



The placing of this under N. gemmatula, Grunow, in Fricke's Index, 

 can not be sustained. It is doubtful if var. fossilis Pantocsek in Hun- 

 garian Diatoms, part 2, plate 2, figure 18, is close enough for a mere 

 variety. The type form was from Campeche Bay, another instance 

 of diatoms peculiar to that locality and the Philippine Islands. 



NAVICULA LIBER W. Smith 



(Smith, Brit. Diat., p. 48, pi. 16, fig. 133; Schmidt, Atlas, pi. 50, figs. 16-18; 

 Van Heurck, Synopsis, pi. 12, fig. 36.) 



Varieties of this approach varieties of N. maxima Gregory, but the 

 two should be recognized as distinct. 



NAVICULA LITTORALIS Donkin 



(Donkin, Brit. Diat., p. 5, pi. 1, fig. 2; Schmidt, Atlas, pi. 7, fig. 12; Van Heurck, 

 Synopsis, Supp., pi. B, fig. 25; H. L. Smith, Types, No. 291.) 



This is like, possibly identical with N. ovulum Grunow (JM. Ung. 

 Gek. Diat,, pi. 1, fig. 19; and Schmidt, Atlas, pi. 70, fig. 13). 



