MARINE DIATOMS OF THE PHILIPPINE ISLANDS 25 



AMPHORA MAGNIFICA Greville 



Plate 5, fig. 4 

 <Greville, So. Pac. Diat., p. 575, pi. 4, fig. 1; Lens, pi. 1, fig. 8.) 



AMPHORA MILESIANA Gregory 



(Gregory, Diat,, Clyde, p. 49, pi. 5, fig. 83; Lens, pi. 1, fig. 7.) 



AMPHORA MONILIFERA Gregory 



(Gregory, Diat., Clyde, pi. 12, fig. 69.) 



AMPHORA NODOSA, Brun, variety 



Plate 5, fig. 3 

 (Brun, Espec. Nouv., pi. 12, fig. 2.) 



AMPHORA OBESA Cleve and Grove 



(Le Diat., pi. 22, fig. 8.) 



A variety of this diatom was incorrectly named by me A. honshu- 

 ■ensis Mann, in my Diatoms of the Albatross Voyages, plate 44, figure 1. 



AMPHORA OBTUSA Gregory 



(Micr. Journ., vol. 5, pi. 1, fig. 34; Schmidt, Atlas, pi. 40, figs. 4-7, 11, and 

 16-17.) 



With several varieties, including var. oceanica Castracane. 



AMPHORA OCELLATA Donkin 



(Micr. Journ., 1861, p. 11, pi. 1, fig. 116; Van Heurck, Synopsis, pi. 1, fig. 26.) 

 Including the var. cingulata Cleve. 



AMPHORA OCULUS A. Schmidt 



{Schmidt, Atlas, pi. 27, fig. 52.) 



The type was from th ; near by Bay of Yokohama. 



AMPHORA OSTREARIA, var, VITREA Cleve 



(Peragallo, Diat., France, pi. 49, figs. 14-15.) 



AMPHORA OVAUS Kiitzing 



(Smith, Brit. Diat., pi. 11, fig. 26; Schmidt, Atlas, pi. 26, figs. 106-111; H. L. 

 Smith, Types, No. 40.) 



This generally common diatom is rare in the Philippine Islands. 



AMPHORA PAUCA, new species 



Plate 4, fig. 6 



Valve long, narrow, straight, with rounded ends, having obscure 

 "ear lobes" on the ventral side; rhaphe adjacent to and parallel with 

 the ventral side, its ends only slightly enlarged and barely reflexed; 

 markings of strong, smooth costae, transverse except at the middle 



