The Philippine journal of science. [Vol. 67, no. 1]

414

414 ~The Philippine Journal of Science 13

1939

from fresh water and moist earth. Reported from New Zealand.
DIPLONEIS SMITHII Breb.? Plate 1, fig. 23.
Diploneis Smithii Breb., FR. HusTEDT, Bacillar. (1930) 253, fig. 402.
Valve elliptic,, ovate, with slightly attenuate and rounded ends.
Length, 0.0272 mm; breadth, 0.017. Median line straight.
Central nodule of median size; furrows narrow. Transverse
rows of alveoli radiate. Costae with double rows of alveoli, 7
in 0.01 mm. Infrequent. A brackish-water species. New Zealand.
DIPLONEIS SUBOVALIS Cleve fo. NOVAE ZEALANDIAE fo. nov. Plate 1, fig. 27.
Valvis ovalis, prae forma typica latior, lateribus modice
arcuatis, polis vastis, rotundatis. Alveolae 5 vel 6 in 0.01 mm,
poris duabis. Valvis longis 0.0306 mm; latis 0.017. Habit in
aiquis dulcis stagnalis prope Napier, N. Z. Legit I. C. Edmundson.
Differs from the type in its valves being more ovate, subrhomboid, and its more distinct costae. The type is-known from
Paeroa, New Zealand.
DIPLONEIS PUELLA (Schumann) Cleve forma. Plate 1, fig. 26.
Diploneis puella (Schumann) Cleve, FR. HUSTEDT, Bacillar. (1930)
250, fig. 394.
Valve elliptic, with rounded ends. Length, 0.0238 mm;
breadth, 0.015. Costae robust, 10 or 11 in 0.01 mm, very indistinctly striate. Infrequent. Differs from the type in its more
robust costae. Reported from fresh and brackish water. New
to New Zealand.
NAVICULA CRYPTOCEPHALA KMtz Plate 1, fig. 15.
Navicula cryptocephala Mtiz., FR. HUSTEDT, Bacillar. (1930) 295,
fig. 495.
Valve lanceolate, with attenuate ends. Length, 0.027 mm;
breadth, 0.0068. Strive slightly radiate, 17 or 18 in 0.01 mm.
Infrequent. Reported from New Zealand.
NAVICULA PUPULA Kfitz. var. CAPITATA Hust. forma. Plate 1, fig. 22.
Navicula pupula Kiitz. var. capitatca Hust., FR. HUSTEDT, Bacillar.
(1930) 281, fig. 467c.
Valve linear-elliptic, with enlarged margin and attenuate broad
ends. Length, 0.0136 mm; breadth, 0.0068. Strive radiate, about
20 in 0.01 mm. Differs from the type in its smaller size. New
to New Zealand.