VEOA-BXPEDITIOKBNS rSTENSKAPLIGA ABBETEN. 513 



N. insignis Greg. var. genuina Grun. (Arct. Diat. pag. 84). 

 Length 0,i7 mm. Breadth 0,oii mm. Striae 10, carinal puncta 

 -6 in 0,01 mm. 



N. campechiana Grun, (M. J. Ill, 1880, PI. XIII, fig. 16). 

 ^Length 0,o65 mm. Breadth 0,023 at the constriction 0,oi9 mm. 

 Carinal puncta 3, stria3 24 in 0,oi mm. 



N. marginulata Grun. (Arct. Diat. pag. 72, PI. IV, fig. 93). 

 Length 0,o93 mm. Breadth 0,oi3 mm. Carinal puncta 12 — 14, 

 •striEe 25 in 0,oi mm. 



N. JeUnecMi Grun. (Arct. Diat. pag. 74). 



N. panduriformis Greg. var. 



N. diluvialis CI. conf. pag. 150. 



Pseudoeunotia DoKolus (Wallich) Grun. (Van Heurck Syn. 

 PI. XXXV, fig. 22). 



Climacosphenia elongata Bail. 



Surirella fluminensis Grun. (A. Schra. Atl. PI. V, fig. 6). 



;S^. Loremiana Grun. (A. Schm. Atl. PI. V, fig; 5). 



S. patens A. Schm. (Atl. PI. VI, fig. 16—17). 



S. mexicana A. Schm. (Atl. PL VI, fig. 10-12). 



8. lepida A. Schm. (Atl. PI. IV, fig. 3—5). 



S. cuneata A. Schm. (Atl. PI. IV, fig. 1). 



S. orUadaris CI. N. Sp. — Valve orbicular, 0,075 mm. in 

 •diameter. Canaliculi distant 1 — 1 1/2 in 0,oi mm., a little more 

 than half of the radius in length, encircling a depressed cen- 

 tral area, which is almost smooth. Margin striate with 18 

 strisE in 0,oi mm. — This beautiful species should perhaps be 

 more correctly arranged in the genus Campylodiscus, where it 

 seems to come near to C. Helianthus, but I think neverthe- 

 less it is most nearly related to Surirella fastuosa. — PI. 38, 

 fig. 79, =f . 



Campylodiscus imdulatus Grev. (A. Schm. Atl. PI. XVIIL, 



fig. 11). 



G. decorus Breb. (A. Schm. Atl. PI. XIV, fig. 4—5). 



C. Ralfsii W. Sm. (A. Schm. Atl. PI. XIV, fig. 1). 



C. crehrecostatus Grev. (A. Schm. Atl. PI. XV, fig. 16—17). 



a suiangularis Grun. (A. Schm. Atl. PL XVIII, fig. 5-6). 



C. densecostatus CI. — Diam. 0,084 mm. Canaliculi numerous, 

 € in 0,01 mm., reaching to the median raphe and interrupted 

 by a circular furrow, V4 of the radius distant from the mar- 

 gin. — PL 38, fig. 76. 



C. Kmbatus var. minuta CI. — Diam. 0,027— 0,035 mm. Cana- 

 liculi about 9 in 0,oi mm. — PL 38, fig. 77. 



n^ TTT. ^^ 



