143 995 
Stauroneis Ehb. 
160. N. (Stauroneis) africana Cl. Cl. New r. Diat. tab. III, fig. 15. 
Solitary in a sample from K Kt. 
Area: South Africa, Ceylon. 
161. N. (Staur.) anceps Ehb. var. hyalina Br. & Perag. Heérib. Diat. 
dAuv. tab. III, fig. 19. 
Solitary in a sample from K Kt. 
Area: Europe (fossil), Australia. 
Libellus Cl. 
162. \. (Libellus) hamulifera Grun. Cl. Syn. 1, tab. III, figs. 17 & 19. 
K Km, KKt (2 samples). 
Area: Barbadoes, Mediterranean, Adriatic, Black Sea, Ceylon, Java. 
Dictyoneis Cl. 
163. \. (Dictyoneis) marginata Lewis var, intermedia Cl. A.S. Atl. 
tab. CLX, figs. 34—35. 
Found only in a sample from KMn—CLt. 
Area: Madagascar, Japan, Malay Archipelago. 
Trachyneis Cl. 
164. N. (Trachyneis) aspera Ehb. 
Of the numerous variants of this form I have found: 
var. contermina A.S. A.S. Atl. tab. XLVIII, figs. 17—18. 
Proportionately broad (L. 0,032 mm., B. 0,011 mm.), stauros not 
reaching the margin. 
var. genuina Cl. V.H. Syn. tab. X, fig. 13. 
var. pulchella W.Sm. A.58. lic. fig. 6. 
var. vulgaris Cl]. A.S. lic. fig. 5. 
Among the variants stated above the var. pulchella is most common. 
KKm, K Kt, K Mn—CLt (15 samples). 
Area: var. contermina: Japan, Cape Horn. 
var. genuina: North Sea, Singapore, Amboina, Sydney, Samoa, Ta- 
hiti, Hawaii, Pacitic Ocean. 
var. pulchella: North Sea, Philippines, Samoa, Sandwich Islands, 
Malay Archipelago. 
var. vulgaris: Arctic America, North Sea, Madagascar, Cape of good 
Hope, New Zealand, Samoa, New Caledonia, Malay Archipelago, Galapagos. 
