310 158 
Hantzschia Grun. 
254. M. marina (Donk.) Grun. var. leptocephala Ost. n. var. Tab. 
nostr. II, fig. 31. 
_  L. 0,04 mm., b. 0,004 mm. Carinal puncta 5,5 in 0,01 mm. 
Strie 11 in 0,01 mm. 
Solitary in a sample from LN (only one specimen met with). 
Area of the main species: Davis Strait, Europe. 
Homoeocladia Ag. 
255. H. sigmoidea W.Sm. Syn. tab. LV, fig. 349. 
LN. 
Area: Europe, Morocco. 
Surirelloideae. 
Surirella Turp. 
256. S. Comis A.S. A.S. Atl. tab. IV, fig. 3. 
Found only in a sample from KMn—CLt. 
Area: Campeachy Bay, Puerto Cabello, Java, Samoa. 
257. §. eximia Grev. A.S. Atl. tab. IV, fig. 13. 
KKt, LN (4 samples). 
Area: the coasts of France, Java. 
258. S. fastuosa Ebr. A.S. Atl. tab. V, figs. 7 & 10. 
KKt, KGn, KMn—CLt, TK (11 samples). 
— — var. cuneata Witt. Perag. |. c. tab. LVIII, fig. 3. 
Found only in a sample without habitat. 
— — var. robusta AS. A.S. le. tab. CCVI, fig. 3. 
Found only in a sample without habitat. 
— — var. Perag. Diat. de Fr. tab. LIX, fig. 2 (from Banyuls). 
Found only in a sample from KMn—CLt. 
Area of the main species: Gulf of Mexico, Campeachy Bay, Europe, Yoko- 
hama, Java, Madagascar, Tahiti, Hawaii. 
var. cuneata: Trégurie (Peragallo). 
var. robusta: Sumbava (A.S. Atl). 
259. S. Gemma Ehr. V.H. Syn. tab. LXXIV, figs. 1—3. 
KMn—CLt, TK, s.1. (3 samples). 
Area: Rio Grande, Europe, Java. 
260. S. Kittoniana Leud.Fortm. A.S. Atl. tab. CCV, fig. 17. 
Found only in a sample from K Kt. 
Area: Samoa. 
