228 MISS L, 8, GIBBS ON THE FLORA AND PLANT FORMATIONS 
NAVICULA CRYPTOCEPHALA, var. VENETA, Van Heurck, Syn. Diat. t. 8. 
f. 10 (1885). 
Tenom, 700’, among submerged alge in ditch. Jan. 23080. 
Distrib. Belgium ; United States. 
VANHEURCKIA RHOMBOIDES, Bréb., var. saxontca, W. & G. S. West, Alg. 
Fl. of Yorks. 1901. 
Sarawak, Matang, 1000', on damp wood. March. 4406. Sarawak, 
pipe-track, among alge in peaty water. March. 4413. 
Distrib. Europe, United States, Ceylon. 
GYROSIGMA SCALPROIDES, Zéabenh. Fl. Eur. Alg. 241. 
Senagong, 1000’, on dead leaves in river. Jan. 2963. 
Distrib. Europe. 
S YROSIGMA ATTENUATUM, Ztabenh., var. SCALPRUM, O. Kuntze. 
Tenom, 700', among submerged algz in ditch. Jan. 3080. 
Distrib. Europe, United States. 
*GoMPHONEMA ANGUSTATUM, Kütz. Bacill. 83 (1844). 
Kinabalu, summit, 12,500’, where Kadamaian streams over granite. Feb. 
4211. Sarawak, Matang, 1000’, on damp wood. March. 4406. 
Distrib. Tropical Africa, Europe. 
GoMPHONEMA CONSTRICTUM, hrenb., var. CAPITATUM, Van. Heurck, Syn. 
Diat., Atl. t. 23. f. T. 
Tenom, 700’, among submerged algæ in ditch, Jan. 3080. 
Distrib, British Isles, Europe, United States. 
GoMPHONEMA EXIGUUM, KAütz. Dacill. 84, t. 30. f. 58. 
Tenom, 700', among submerged algæ in ditch. Jan. 3080. 
Distrib, Europe, tropical Africa. 
(GOMPHONEMA GRACILE, Pritch. Inf. ed. 4. 217, t. 18. f. 3. 
Tenom, 700', among sodden dead leaves in forest. Jan. 2815. 
Distrib. Europe, W. Indies, Central America, tropical Africa, United 
States. 
GOMPHONEMA OLIVACEUM, K'ütz. Bacili. 85, t. 7. ff, xiii. & xv. 
Tenom, 700', among sodden dead leaves in forest. Jan. 2815. 
Distrib. Europe, N. Africa, United States. 
