60 p. T. CLEVE, SYNOPSIS OF THE NAVICIJL* )11) DIATOMS, - 



Var. Ifcvis Cl. — L. O.ot to (»,n; B. 0,0.-) to O.ott mm. Areas smooth. Marginal stria' 10 

 to lo and their puncta 11 to K! in,0.ui mm. Axial stri.e of 3 to 5 piincta. — N. Sandrinna 



A. S. Atl. Ill f. 10; LXX f. 45. Pant. 1 p. 2h PI. IX f. k2. 



Marine: North Sea (Bohuslan! Solswig, Atl.), S:t Brienc (At!.), Moroceol Balearic islands! 

 Cannes! Red Sea (Deby Coll.)! Madagascar (Kinker Coll.)! Fpssil, Hungary! 



22. N. spectabilis CIreu. (1857). — V. elliptical. L. 0,07 to 0,i:>; B. 0,u3 to 0,(iti mm. 

 Lateral areas broad, convergent, nai'rowed in the middle. Stria' B to 14, puncta 10 to 28 in O.oi 

 mm. — D. of Clyde p. 481 PI. iX f. 10. A. S. Atl. IJl f. 20-21. Donk. B. D. p. 12 PI. II f. 5. 

 N. Hennedii Janisch Guano p. 2f^ PI. II f. 13. N. mikado Pant. Ill PI. XXIII f. 334 (1893)? 



Marine: Greenland! North Sea! Morocco! Mediterranean Sea! Adriatic! Red Sea! Bab el 

 Mandeb! Cejdon! Java! Philippines! Japan! Cape Horn (Petit), Colon (Deby Coll.)! Fossil: Au- 

 gamos Guano (Jan.), Hungaiy (Pant.), S:ta Monica, Calif.! 



N. spectahilis is extremely variable and comprises forms connecting N. Hcnnedyi and N. Lyra, 

 no absolute limit existing between these three species. 



Var. ma.rima Cl. — V. elliptical. L. 0, it;; B. 0,o8 mm. Areas linear. Stria' 5 in 0,(ii mm. 

 Pnncta 7 in 0,oi mm. disposed in longitudinal rows. 



Marine: Macassar Straits ((xrove Coll.)! 



Var. Imlluta Cl. — L. 0, 11; B. O^ou mm. Latend areas with a row of large pnncta. Stride, 

 10, puncta 17 in 0,01 mm. — N. hxllafa car. obtn.su Castr. Voy. Challenger p. 29 PI. XXVIII f. 10. 



Marine: Singapore! 



Forma Mollcriana Jan. (1881). — V. subhexagonal to elliptic-lanceolate. Lateral areas 

 narrow, scarcely narrowed in the middle. L. 0, 1 to 0, i.s; B. 0,o.'i to O.o^y mm. Strise. 7, puncta 10 

 in 0,(ti mm. ■— N. hidlata car. Molleriana A. S. Atl. LXX f. 51, 52. 



Marine: Australia (Atl.). 



Var. madaga.scarcnsis Cl. — V. with subcuneate ends. L. 0, 125 to 0, i.ts; B. 0,0 b-j to 0,06 8 

 mm. Stripe and puncta 13 in 0,(ii mm.; the latter forming almost straight longitudinal rows. 



Marine: Madagascar (Van Heurck (JoU.)! Nossi-Be (Tempere)! 



Var. rovtrocersa A. S. (1874). — L. O.mi; B. 0,035 mm. Lateral areas in tlie middle linear, 

 dilated and tlien narrowed towards the margins. Striaj 10, puncta 13 in O.oi mm. — A. Jlnntcdi/i 

 var. controversa A. S. Atl. Ill f. 5. 



Marine: Campeachy Bay (Atl.). 



Var. ahhreriata Cl. — V. with slightly coustiicted middle and broad, cuneate ends. L. 0,083; 



B. 0,03 mm. Areas short not reaching to the ends of the valve. Stria' 12 (axial and terminal 

 15), pnncta 15 in 0,oi mm. 



Marine: Madagascar! 



Var. Baffiat/i Pant. (1889). — - V. elliptic-lanceolate. L. 0,077.5; B. 0,o32 mm. Areas as in 

 var. abbreviata. Marginal stricC 10, terminal 15 in 0,oi mm. finely punctate. — N. Eattrayi F ant. 

 11 p. 52 PI. XXX f. 427. 



Marine: Hungarj', fossil (Pant.). 



Var. e.nmrnhiata Cl. — V. elliptical. L. O.07 to 0. 11; B. 0.03 to 0,o4 2 mm. Areas broad, 

 notched in the middle. Striae 12, puncta IS in O.oi mm. Central nodule sometimes transversely 

 dilated. — N. ca-avata A. S. Atl. Ill f. 22-25. Janisch (■;azelle Exp. XV f. 22. 



Marine: Sierra Leone (Deby Coll.)! Jai)an (Atl.), Campeachy Bay (Atl.), Nottingham, 

 Maryl. fossil (Rae Coll.)! 



Var. Anyeloruni Cl. (1881). — V. elliptical. L. 0,o8.^ to 0,2; B. O,o4 7 to 0,o9 mm. Areas 

 broad sinnate in the middle, attenuate towards the ends, smooth. Strict 7 to 15, puncta 14 to 

 K; in 0,01 mm. ('entral nodule sometimes transversely dilated. — N. excavaia var. Angdorum 

 Cl. N. R. I). ]). s PI. 11 f. 20. A. Osn-aJdi Janisch, N. rxcarata rar. wcsolna Gkun. in A. S. Atl. 

 LXX f. 46 (1881). 



