210 



Triccratitim Ehreuhergii, Grun. {Discoplca nndiilata, Ehr.) 

 Triceratium Heilprinianum, Kain and Schultze, n. sp. 

 Valve triangular ; surface with central and angular eleva- 

 tions — the central elevation shaped like a truncated pyramid; 

 punctae radiate and coarser at center. (Plate XCIII. Figs. 3 and 3a). 

 We take pleasure in dedicating this beautiful form to Pfof. 

 Angelo Heilprin, the distinguished naturalist 



Triceratium indentatum, Kain and Schultze, n. sp. 

 Valve triangular with convex margins ; extremities slightly 

 constricted and double, produced by rounded indentations; cel- 

 lules stout, radiating from center. (Plate XCII., Fig. 4) 

 Triceratium Kainii, var. CONSTRICTUM, Schultze, n. var. 



Valve triangular, with deeply constricted margins; stnation 

 moniliform, convergent toward the center and intercepted by 

 three costae equi-distant between the produced apices and the 

 unstriated center. (Plate XCIL, Fig. 3). 

 Tryblionella Hantzschiana, Grun. 

 Trybliojiella sctiielltmi, W. Sm. 



DESCRIPTION OF PLATES. 



Plate LXXXIX. 



Fig. I, la, lb. — Dimcregramnia Xovce-Ccrsanra^ K. and S. 



Fig. 2.—Naviciila Schultzd^ K. 



Fig. 3. — BhUinlphia Woohuanli^ K. and S. 



_ * 



Fig. 4. — Biddiilphia Cookiaiia, K. and S. 



Fig. 5. — Triceratitini Kaiiui^ S. 



Fig, 6, 6a. — Triceratium semicirctdare^ Biightw. 



Fig. 7. — ]\hahiionc77ta Athiutictt?}!^ K. and S, 



Plate XCIL 



Fig. I, la, lb, ic. — Biddulphia Brit/oniana, K. and S. 



Fig. ^—Auiisnis Sfij;osiis, Christian. Reduced from Schmidt's Atlas der Diatom 



aceen-kunde, Plate CXXV., Fig 2. 

 ^*g- 3- — Triccratitim A'aitrii, var. constrictiim^ S. 

 Fig. 4. — Triceratitan indtntatiim, K. and S. 

 Fig. 5a. — Grammatophora serpentina, var., K. and S. 

 Fig. 6. — C/uTioceros {didy/niis, Ehr. ?) 

 Fig. 7. — ActinodiscHs Ailaniicus^ K. and S. 



Plate XCIII. 



Fig. 1. — Eunoiia Americana, K. and S, 



Fig. 2, 2a. — Terpsinik intermedia^ Grun, var. 



Fig. 3, 2t^.~ Triceratium lliilprimamun, K. nnd S. 



Fig. ^.—Biddulphia ? K. and S. 



Fig. b.—Navicula Dc IViitiana, K. and S. 



