— 140 — 



Found only in a sample without habitat. 



Area: Honduras, Manilla, Gebu, Macassar, Ceylon, Sumbava (Cleve). 



147. Ji. forcipata Grev. var. niuiimularia Grev. A. S. Atl. tab. LXX, 

 fig. 38. Perag. Diat. de Fr. tab. XXI, fig. 31. 



LN (2 samples). 



Area: Californian Guano, Florida, Adriatic, Bab el Mandeb, Madagascar, 

 Cape of good Hope, Java. 



— — var. suborbiciilaris Grun. Perag. Diat. de Fr. tab. XXI, fig. 32. 



KKt (2 samples). 



Area: Spitzbergen, North Sea, Baléares, Seychelles, Java, Zulu Sea, Gala- 

 pagos. 



148. Pi. Lyra Ehb. 



Among the numerous variants of this form I have found: 

 Pi. Lyra Ehb. forma typica. Perag. Diat. de Fr. tab. XXII, fig. 3. 

 A. S. Atl. tab. II, fig. 25. 



— — var. dilatata A. S. A. S. Atl. 1. c. fig. 26. 



var. elliptica A. S. V. H. Syn. tab. X, fig. 2. A. S. tab. Ill, 



fig. l u 2. 



— — var. intermedia Perag. Perag. Diat. de Fr., tab. XXIII, fig. 11. 



— — var. producta Pant. Perag. 1. c. tab. XXII, fig. 13. 



— — var. subcarinata Grun. A. S. 1. c. tab. II, fig. 5. 



— — var. spec.? A. S. Atl. tab. Ill, fig. 12 (from Java), 

 KKm, KKt, KCgN, LN (18 samples). 



Area: Nav. Lyra: with varieties widely distributed, the var. subcarinata: 

 Indian Sea, Samoa, Tahiti. 



149. Pi. spectabilis Greg. var. emarginata Gl. Jan. Gaz. Exp. tab. XV, 

 fig. 22. 



KKt (1 sample). 



Area: Campeachy Bay, Sierra Leone, Japan. 



150. Pi. mediopartita Grove var. Tab. nostr. II, fig. 21. Gnfr. A. S. 

 Atl. tab. GGIV, fig. 16. 



L. 0,045 mm., b. 0.019 mm. Striæ 22 in 0,01 mm. 



Valve lanceolate with somewhat protracted apices. Two lines 

 forming a lyrate figure and nearly parallel to the margin are present. 

 Marginal part conspicuously striated; on the inner part between 

 the lines and raphe the striæ are closer and more difficult to see. 

 Narrow transapical area. 



KKt (2 samples). 



Area: N. mediop.: Oamaru (Grunow). 



