20 CLEVE, DIATOMS FROM THE WEST INDIAN ARCHIPELAGO. 
Synedra fulgens W. Sw. 
S. superba Körz 
S. undulata (BAIr) GREG. 
Surirella fastuosa EHB. var. 
Sur. Gemma EB. 
Campylodiscus Thuretii BRrRÉB. 
Podocystis Adriatica Körz. 
+ Nitesclua quarnerensis GruN. (Verh. 1862 'T. 18 fig. 5, 6). 
This form seems to be only a variety of N. distans and 
N. spathulata. 
"NN. Greffet GrRuNn. Mer. N. Sp. Broad with cuneate and 
rounded ends, almost parallel sides, a little constricted in 
the middle. Strix strong, 10 on 0,01 m. m., composed of 
puncta. Marginal puneta 5 on 0,01 m. m. IL. 0,127—0,14 
12000 BALL SSR VA 
GRUNOW, who has sent me a fig. of the species, found it 
in a gathering from Samoa. I have seen it among diatoms 
from Port Jackson. 
N. longissima (Körtz). 
N. ventricosa KittON. 
N. Sigma (Körtz.) W. SM. 
+ Tryblionella granulata Grus. Mpt. It is a very small form, 
of oval shape, with large granules arranged in transverse 
lines. 
Grammatophora peruana EHB. 
"Gr. pusilla GREV. 
+ Striatella unipunctata (AG.). 
Climacosphemia elongata BAI. 
 Podosphemia Ehrenbergii W. SM. 
P. ovata W. SM. 
P. angustata GRUS. 
Licmophora argentescens (AG.). 
Isthmia enervis EB. 
+ Biddulphia membranacea OC1. N. Sp. S.V. elliptie with 
rounded ends. F. V. rectangular. Valve very large and 
membranaceous. Sculpture: very small cellules, arranged 
in lines, crossing each other in three directions. The 
lines are about 8 in 0,01 m.m., parallel on the middle of 
the valve, but somewhat radiant near the ends. The con- 
necting membrane is covered by elongated puncta, ar- 
ranged in lines, somewhat coarser than those of the valve. 
