BIHANG TILL K. SV. VET. AK.\1). IIANDL. BAND 1. N:0 11. " 



shortly prodiiced angles, whieh are pointed witli very sinall su- 

 biilate processes. The frustules are concatenated in long chains, 

 liavinsf narrow, linear foramina. 



Breadth (F. V.)0,i2 m.m. Height of tlie frustule 0,024 m.m. 



Not rare. Pl. J fig. o. 



The Climacodiuni Frauenfeldianum Grun (Novara. Exp. 

 pag. 102 PL la. fig. 24) from the Nicobar Ids. seems to be 

 nearly related to onr species. 



18. Eucampia Zoodiacus Ehb. (Sm. Syn. VoL II pag. 25. 

 Pl. XXXV fig. 299 and PL LX fig. 299). 



Somewhat rare and found beforc in Sussex, Gr. Br. • 



19. MöUeria cornuta Cl. N. sp. CL Gen. MöUeria: Side- 

 view ellipticaL Frontview curved, not symmetrical on both sides 

 of the longitudinal axis, but symmetrical on both sides of the 

 transverse axis. The extremities of the valves produced in long 

 processes. Connecting membrane with numerous costse (rudi- 

 nients of diaphragms?) 



This interesting genus, named in honour of the famous 

 preparer of diatoms M. Möller of Altona, forms a very inte- 

 resting connecting link between Eucamjna, which it resembles 

 in its general form, and tlie Striatella^ having the structure of 

 the connecting membrane of tlie latter family. 



CItar. Sp. ^f. cornuta X. Sp. almost membranaceous; dia- 

 phragms alternate, numerous. Valve with scarcely distingui- 

 shable scidpturc. 



Lenght 0.03(1 m.m. Height 0,144 m.m. L. of the cornes 

 0,0 2 4 \x\.\n. 



Somewhat rare Pl. I fig. 6. 



20. Skeletonema costata (Grev.) Cl. {Mehsira costata 

 Grev. t. M. S. n. s. VoL XIV pag. 77. Pl. VIII fig. 3— B.) 

 Valve scarcely siliceous, having on their upper margin a crown 

 of large and somewhat strong processes, which meet similar 

 processes from another frustule. The frustules are connected 

 into long chains just as Creswellia. 



Not uncommon. Found before near Hong Kong and in 

 the Xorth Sea (Yorkshire). This species is certainly no Me- 

 losira and seems to me to belong to the genus Skeletonema (Grev. 



