8 . P. T. CLEVE. UIATOMS FROM JAVA. 



T. M. S. 11. s. Vol. XIII pag. 43) of which only oiie species is 

 known, the S. Barhadense Geev. from tlie Barbados deposit. 



21. Creswellia Palmeriana Geev. (T. M. S. n. s. Vol XIII 

 pag. 2 Pl. 1 fig. 9.) ' . 



Xot uncommon. Found before iiear Hoiig Kong and on 

 the coast of Australia. 



22. Lauderia annulata Cl. A', sp. Clu Geueris. Frustule 

 cylindrical, sideview orbicular, covered, at least near the margin, 

 with numerous short, liairlike processes or spines. Frontview 

 annulated. Sculpture consists of vcry fine pnncta. 



This genus, named in lionour of M. Lauder, who lias lar- 

 gely contributed to the history of one of the most interesting 

 families of diatoms the Chetocera?, in some characters resembles 

 CreswelKa, but in other respects Striatelk\ It seems to be a 

 connecting link betAveen the two forms, just as Mölleria bet- 

 ween Eucampia and Striatella_\ 



Lauderia annalata A"", sp. ahnost membranaceous; surface 

 and connecting membrane covered by numerous small puncta, 

 visible only with high power. 



Breadth of f. v. 0,0 2 4 — (),0 7.5. Height of f v 0,u9fi. Not 

 very rare. Pl. I fig. 7. 



23. Bacteriastrum varians Ij-auder {M. J. XII pag. 8 Pl. 

 III fig. 1 — 6) very common. Found before near Hong Kong 

 (Lauder) and Xicobarian Ids ((iRrx). 



24. Chsetoceros Peruvianum Prightw. (M. -J. vol. IV pag. 

 107 Pl. VII fig. 16—18). Tölerably common. Found betbre 

 in guano from Callao and also in the northern Atlantic (Cl.) 

 and Davis Strait (Cl.). The long horns are transversely stri- 

 ated, but the stria- are very fine (about 70 in 0,o25 m.ra.) 



For. rohustuon Cl. n. var. Horns stout triangulär and dis- 

 tinctly transversely striated; probably the same form as Ch. ho- 

 reale? Lauder (T. M. S. n. s. Vol XII pag. 78. Pl. VII fig. 7). 

 Striai about 36 in 0,0 2 5 m.m. Pl. II fig. 8 a. upper valvc. b. 

 lower valve. 



25. Chsetoceros compressi^m Lauder (T. M. S. n. s. Vol. 

 XII pag. 78. Pl. Ylll lig. 6) very rare; found before near 

 Horig Kong. 



